Barracuda Dual Wet Dental Vacuum System User Manual

Transcription

1 Barracuda Dual TM Wet Dental Vacuum System User Manual

2 Table of Contents Section I Introduction Specifications... Classification... Explanation of Signs and Symbols Section II Pre-installation Site Requirements...3 Typical Installation Options... Section III Installation Water Supply Line...5 Vacuum Line...5 Waste Line...6 Electrical Connection... 7 Intake/Exhaust Hose Connections...8 Remote Low-Voltage Switch Control...9- Section IV Operation & Care General Operation... Maintenance Schedule Water Recirculator Cleaner... Section V User Service Information Service Instruction... 5 Troubleshooting Relay Box Fuse Replacement...7 Wiring Schematic... 8 Air/Water Flow Circulation Diagram... 8 Pump Removal... 9 Vacuum Pump System Repair Procedure Section VI Parts List Frame Assembly... HP Dual Pump Assembly...5 HP Dual Pump Assembly...6 Intake Manifold Assembly, Dual...7 Exhaust Manifold Assembly, Dual...8 Water Recirculator Exhaust Manifold Assembly (Optional)...8 Electrical Box...9 Section VII Repair Parts Water Control Assembly Vacuum Control Assembly... 3 Vacuum Gauge and Adapter... 3 In-line Filter Assembly, "... 3 Anti-Siphon Valve Assembly...3 Water Solenoid Valve Assembly...3 Limited Warranty...33 EMC Information

3 Section I Introduction This manual contains installation, operation, care, and repair instructions and user service information for RAMVAC Barracuda TM Dual Wet dental vacuum system. The Dual Wet Vacuum is designed to provide trouble-free service when installed, operated, and cared for according to the procedures set forth in this manual. WARNING Do not modify this equipment. Modification will void the warranty and could result in serious injury. Specifications Motor MC-0 FS MC-0 FS Power Rating: HP HP Voltage: 08/30 08/30 Amps (each motor): 7.5/7.5 5/5 Cycle: 50/60 Hz. Phase: Single Running Speed: 350 RPM Max. Oper. Noise Level: db Vacuum Mercury Pull (Sealed Sys.): Approx. 0-5" Hg. Adjust. One Pump Operation Usable CFM: 5 30 Use factor (Number of high-volume hoses open simultaneously): 3 Two Pump Operation Usable CFM: Use factor (Number of high-volume hoses open simultaneously): 6 Gauge Accuracy: ASME/ANSI B0. Grade B (+/- 3//3%) Water Requirements Gallons Per Min. (per pump): / Dimensions Height: 3" Width: 6" Depth: 7-/" Shipping Weight: 75 lbs. 5 lbs. Barracuda TM Dual User Manual Approvals Certified to ANSI/AAMI ES6060-:005(R0) and certified to CAN/CSA Standard C. No :08, and comply with NFPA 99C level 3 vacuum requirements. They are manufactured in a FDA Registered ISO 385:003 certified facility. Classification Type of protection against electric shock: Class Equipment Degree of protection against the ingress of water: Ordinary Equipment not suitable for use in the presence of a flammable anesthetic mixture with air or with oxygen or nitrous oxide. Mode of operation: Continuous Recommended Temperature ranges: Operating Temperature range within 0 to 0 C/50 to 0 F Operating Relative Humidity Range: 0 to 95%. No condensing moisture. Operating Atmospheric pressure range: 63 to 05 kpa Transport/storage temperature range within -0 C to 70 C/-0 F to 58 F Relative humidity range for transportation and storage within 0% to 00% Atmospheric pressure range for transporta tion and storage within 50 to 05 kpa Explanation of Signs and Symbols = Attention, Consult Accompanying Documents = Protective Earth Terminal = Caution. Electrical Shock Hazard. Refer Servicing to Qualified Personnel = Hot Surface = European Certification The authorized European representative is: Dental Hygienics & Decontamination (DHD) Blackwell Drive, Braintree Business Park, Braintree Essex, CM7 PU, UK Phone: + (0) ext. 00

4 Section II Pre-installation The Wet Vacuum Pump labels include safety symbols with special meanings This means there is more information available in this User Guide. This notifies users to be aware of biohazardous materials that may be present. This notifies handlers that this box should never be stacked. This warns handlers not to allow the box to be placed on an unlevel surface due to risk of tipping. The following Pre-installation information will assist in making a quick, easy and quality installation. However, if there are any questions, contact a RAMVAC technical service representative at -866-DTE-INFO. Site Requirements This notifies handlers that the box must remain upright at all times. Used to advise the operator to consult the accompanying documents. This notifies handlers of the safe temperature range for the contents in box. This notifies handlers of the safe humidity range of the contents in the box. WARNING Not for use in an oxygen rich environment. Large concentrations may cause a fire in the vacuum unit and may cause an exhaust hazard. WARNING To avoid risk of electric shock, this equipment must only be connected to a supply mains with protective earth. WARNING Electrician must provide a means to isolate the circuit electrically from the supply mains on all poles simultaneously. Before the Dual Wet Vacuum can be properly installed, the following utilities must be supplied: Electrical All electrical supply lines and control wiring should be supplied and installed by a licensed electrician according to local building codes. The Dual Wet Vacuum requires two separate circuits (one for each pump motor) of the correct voltage for the system ordered. In addition to the thermal overload protection built into the motors, each circuit must be provided with a circuit breaker, time delay fuse or standard fuse. See the Motor Protection Chart below for recommended breaker or fuse amperage. Motor Protection Chart Protection Type (each motor) MC-0 FS 30V MC-0 FS 30V Circuit Breaker 5 Amps 0 Amps Time Delay Fuse Amps 0 Amps Standard Fuse 5 Amps 0 Amps An electrical disconnect box is recommended for each circuit, near the Dual Wet Vacuum. Water Water line must be installed by a plumber according to local building codes. Terminate water line in /" FIP gate valve. Waste CAUTION A free-flowing discharge system is required for proper operation of the vacuum system. The dual pump may leak at the anti-siphon valve if the discharge system is restricted. Ensure the vacuum system is installed and cleaned in accordance to the instructions in this manual. Waste line must be installed by a plumber according to local building and health codes. For requirements, see Typical Installation Options, page and Waste Line, page 6. Water Line (/" Gate Valve Reduced to 3/8" FIP) Vacuum Line (PVC,Schedule 0) Figure. Site requirements Low Voltage Line (V) (Optional) Waste Line (Drain) Electrical (30V) Electrical Disconnect Box & Conduit 3

5 Section II Pre-installation Barracuda TM Dual User Manual Low Voltage Control Line (Optional) If remote low voltage is desired, a licensed electrician should install 8-3 thermostat wire for lighted switch or 8- thermostat wire for non-lighted switch from the pump location to the operatory switch located up to 500 feet away. If the operatory switch is over 500 feet away from the pump location, use 6-3 thermostat wire for lighted switch or 6- thermostat wire for non-lighted switch. NOTICE All vacuum systems must be installed according to local building and electrical codes. Typical Installation Options Required only when specified by local plumbing code. " Air Gap Per Local Code Water Supply Muffler* In-Wall Manifold and Filter Assembly In Line Filter Floor Stand and Filter Assembly Junction Box Filter Assembly OPTION NO. Air/Water Separator (vent to outside) Muffler* -/ PVC, SCH. 0 " Slope Per 0' Toward Vacuum Producer OPTION NO. Water Supply Muffler* OPTION NO. 3 Water Supply Floor Sink with Adapter Figure. Typical installation options for the Barracuda *Position of muffler shown for illustration clarity only.

6 Section III Installation The water going to the unit acts as a pump sealant and cooling agent. When the vacuum pump is in operation, the water supply must be on at all times. The plumber supplies and installs a /" gate valve on the water supply line. Connect the 3/8" nylon tubing and fittings, which are supplied with the unit, as illustrated (Figure 3). Figure 3. Water supply line connection Vacuum lines must be installed by a local plumber in accordance to local building codes. All vacuum lines and risers are recommended to be PVC, SCH. 0. Type M copper should be used if local code does not allow the use of PVC. Care should be taken to slope the lines " for every 0' of run toward the vacuum pump(s). This allows waste and liquids to flow with gravity, contributing to the efficiency of the vacuum system. Make all connections using long radius sweep fittings. To promote unrestricted flow of air and waste liquids through the vacuum lines, directional flow connections should be used. Using 5 elbows for turns or avoiding obstructions is best; however, do not make a trap in the line; doing so will decrease the efficiency of the system Water Supply Line Vacuum Line * Water Line * Valve, Gate, Brass, /" Bushing, Brass, /" MIP 3/8" FIP Adapter, Brass, 3/8" MIP 3/8" Tube 5 6 ft Tube, Nylon, 3/8" * Plumber Supplies All elbows and tees should be sized for the main line and sized down with bushing reducers to accommodate smaller lines. Avoid sagging lines, which cause the formation of traps in the system and prevent good air and waste liquid flow. Connect the evacuation system to the vacuum line using the hose and fittings supplied in the installation kit. The vacuum line can be installed from the right or left side of the cabinet (Figure ). * Vacuum Line, IPS, PVC, SCH. 0 * Elbow, IPS, PVC, SCH Adapter, PVC, " MIP -/" Shank Clamp, -/" Hose 5 6 ft Hose, -/" * Plumber Supplies Figure. Vacuum line connection 5

7 Section III Installation Barracuda TM Dual User Manual Waste Line The waste line carries water and liquid waste from the operatory to the building s sewer system. The waste line should follow the most direct path to the sewer connection with a minimum of bends and elevations, and must be installed according to local building and plumbing codes. The waste line can be installed from the right or left side of the cabinet. The exhaust connection should be made by either of two methods--floor sink connection, or direct connection to P trap, depending on local code and building facilities. FLOOR SINK CONNECTION Use floor sink adapter. Install as illustrated (Figure 5). Figure 5. Installation using floor sink adapter * Adapter, PVC, Floor Sink, " Barbed Insert Adapter, PVC, " MIP -/" Shank Clamp, Stainless Steel, -/" 6 ft Hose, Exhaust, -/" * Plumber Supplies 3 NOTICE IMPORTANT: No part of the waste line should be more than three (3) feet above the level of the waste connection on the vacuum pump. DIRECT CONNECTION TO P TRAP Use P trap-air gap, if required by local code. Install as illustrated (Figure 6). 5 Figure 6. Installation using direct connection to P trap 6 ft Hose, Exhaust, -/" Clamp, Stainless Steel, -/" 3 * Elbow, -/" * Nipple, -/" 5 * Adapter, Air Gap, " 6 * Reducer, Bell, " -/" 7 * Nipple, -/" Close 8 * Trap, P, -/" * Plumber Supplies

8 Section III Installation Electrical Connection 60 Hz 50 Hz Protective Earth (Green/Yellow) Protective Earth (Green/Yellow) Line (Blue) Line (Brown) Neutral (Blue) Line (Brown) Figure 7. Electrical connection for 60 Hz Figure 8. Electrical connection for 50 Hz Complete electrical hook-up per electrical code as follows: For 60 Hz models, connect line to blue wire, line to brown wire, and protective earth to green/ yellow wire (Figure 7). For 50 Hz models, connect neutral to blue wire, line to brown wire, and protective earth to green/ yellow wire (Figure 8). 7

9 Section III Installation Barracuda TM Dual User Manual Intake/Exhaust Hose Connections Evaluate the installation site and determine which side the various hoses will enter the pump frame and the location for the water supply connector. Place the hoses on their appropriate manifold hose adapters and secure them using the hose clamps. Complete the water supply hook-up using the poly flow tubing and fittings supplied in the installtion kit (Figure 9). Insert plug to intake manifold (left or right installation) Connect hose to intake manifold (left or right installation) Provide two separate electrical circuits (one for each pump motor) Filter Assembly Connect to vacuum lines: Filter, hoses & fittings provided " or -/" FNPT fitting required Optional: Install water recirculator between muffler and manifold Muffler Mount filter to wall using bracket and screws provided Connect to sewer line: Muffler, tubing and clamps provided -/" FNPT fitting required Connect to waste manifold -/" FNPT fitting (left or right installation) Figure 9. Intake/exhaust hose connections Connect water supply line: 3/8" nylon tubing and fittings provided /" gate valve (/" FNPT) required Install low-voltage remote control thermostat wiring: 8-3 for lighted switch 8- for non lighted Use 6 gauge when distance from pump exceeds 500' Connect remote control wiring at switch location in frame box 8

10 Section III Installation Remote Low-Voltage Switch Control WARNING Before proceeding with any electrical installation, comply with and maintain all applicable local electrical code(s) and regulations. NOTICE All wiring between the main control box and equipment should be Class B, low-voltage. In most cases, a conduit is not required when using this type of wiring.. Position the master switch in the desired location.. Run the appropriate wires to their respective equipment location. (See Wiring Chart below.) 3. Connect wires according to the wiring schematics on the next two pages. Wiring Chart Model No. No. of Wires Wire Under 500 ft. Wire Over 500 ft. MC AWG 6 AWG MC AWG 6 AWG 9

11 Section III Installation Barracuda TM Dual User Manual Two Switch, Dual Vacuum System IMPORTANT NOTE: Refer to Wiring Chart on page 9 for length and gauge of wire. ON/OFF Switches (mounted on Dual Frame) Vacuum Pump Relay Box Vacuum Pump Relay Box Light (Brown) Switch (Yellow) Common (Black) L T L T Light (Brown) Switch (Yellow) Common (Black) L T L T Line Voltage (to source) Load (to Vacuum Pump) Line Voltage (to source) Load (to Vacuum Pump) Junction Box Vacuum Vacuum see below see below Wall-Mount Switches (shown from back of switch plate) Switch Light Common Common OR NC 3 NO OR +3 OR Light Master Control Panel Rocker Switch Switch Ramvac Maintained Switch Light Common Switch Rocker Switch ON/OFF Switches (mounted on Dual Frame) NOTE: Using the circuit depicted in the diagram above, either switch will turn the vacuum pumps on. To wire pumps so that either switch will turn the vacuum pumps off, use the circuit shown in the diagram on the left. Light (Brown) Switch (Yellow) Common (Black) Switch Common Non-Illuminated Switch Light (Brown) Switch (Yellow) Common (Black) Vacuum Pump Relay Box Vacuum Pump Relay Box Figure 0. Wiring for two switch, dual vacuum system NOTE: REFERENCE YOUR MASTER CONTROL PANEL INSTRUCTIONS. 0

12 Section III Installation One Switch, Dual Vacuum System IMPORTANT NOTE: Refer to Wiring Chart on page 9 for length and gauge of wire. ON/OFF Switches (mounted on Dual Frame) Brown Brown Yellow Black Black Yellow Vacuum Pump Relay Box Vacuum Pump Relay Box L T L T Light (Brown) Switch (Yellow) Common (Black) L T L T Line Voltage (to source) Load (to Vacuum Pump) Line Voltage (to source) Load (to Vacuum Pump) Junction Box Vacuum see below Wall-Mount Switch (shown from back of switch plate) Switch Light Common Common OR NC 3 NO OR +3 OR Light Master Control Panel Rocker Switch Switch Ramvac Maintained Switch Light Common Switch Rocker Switch Switch Common Non-Illuminated Switch NOTE: Using the circuit depicted in the diagram above, the remote switch, while in the on position, will remain illuminated when the Dual Frame mounted switches are in the off position. Figure. Wiring for one switch, dual vacuum system

13 Section IV Operation & Care General Operation RAMVAC vacuum pumps are designed to provide a vacuum source for use by dental professionals in the dental operatory. The main purpose of the vacuum is to evacuate the oral cavity. The Dual Wet Vacuum can be operated from the operatory using an optional low-voltage conversion kit and low-voltage switches, making a convenient way to turn the pumps on or off as needed, plus saving water and electricity. In some installations, where two or more doctors are using the vacuum system, it may be necessary to leave the evacuator on throughout the working day. The pumps are designed to handle heavy workloads and are rated for continuous operation. If the evacuator operates for extended periods of time, proper ventilation is important. Installations in small, confined areas should be supplied with a ventilation system capable of keeping the air temperature around the pump at 0 C/0 F. Maintenance Schedule WARNING Prior to performing any maintenance, proper precautions should be taken to reduce the possibility of contact with infectious substances. A minimum amount of maintenance is required to keep the Dual Wet Vacuum in top running condition. The motor and pump assemblies require no lubrication. For best performance results, adhere to the following maintenance schedule: Daily Maintenance Flush Vacuum Plumbing System NOTE: Check the treatment room solids separator routinely and clean when dirty. Barracuda TM Dual User Manual. Just before turning off the RAMVAC, rinse vacuum lines first with hot water - approximately one quart through each high volume line and a few ounces through each saliva ejector line.. Aspirate a few ounces of a dental vacuum line cleaner through each vacuum line. SlugBuster TM is highly recommended. After Surgical Procedures Aspirate a few ounces of an appropriate vacuum line cleaner, such as SlugBuster TM, through the lines. For Overhead Plumbing Be sure to allow air to follow liquids before closing vacuum valves. Cleaners Cleaners should have these qualities: Non-foaming Deodorizing Sanitizing ph between 6 and 8 CAUTION IMPORTANT: Use of line cleaners outside of this ph range will void the warranty. CAUTION Foam may cause damage to the pump. Avoid interruptions by insuring your cleaner is truly non-foaming. Test by shaking the mixed solution. True non-foamers will be bubble free. NOTICE Use of SlugBuster TM vacuum line cleaner is highly recommended. SlugBuster TM is available in powder and liquid forms, which can be ordered through any authorized RAMVAC dealer.

14 Section IV Operation & Care SlugBuster TM Ordering Information RAMVAC Part No Contents Powder Starter Pack: Mixing jug, two 0-ounce containers of SlugBuster TM. Powder Six-packack: Six 0-ounce containers of SlugBuster TM (makes 80 gallons of solution) Liquid Single Gallon: One gallon of SlugBuster TM concentrate and hand pump dispenser Liquid Starter Pack: Mixing jug, one gallon of SlugBuster TM concentrate and hand pump dispenser Liquid Four-pack Case: single gallons of SlugBuster TM concentrate and hand pump dispensers Turn Off Water Supply NOTICE IMPORTANT: At the end of each working day, turn off the water supply to the unit by closing the gate valve on the water supply line, or if an optional remote control panel is installed, push the water button to the OFF position. Then close the gate valve on the water supply line. NOTE: Although the water supply to the vacuum system is normally turned off electrically when the system is turned off, it is possible that a solenoid valve may malfunction, allowing water to flow through the valves and into the vacuum system. WARNING Before starting cleaning procedures, make certain to put on eye protection, a mask, and puncture-resistant nitrile gloves. Shutdown Procedure To terminate operation of the water ring pump, press the designated switch on the low voltage panel or use the rocker type switch on the front panel located on the frame of the dual pump unit. For maintenance or any physical interaction with the water ring pump or associated circuitry, disable the unit using the local disconnect or wall panel breaker for electrical isolation. Utilization of a lockout/tag-out procedure is recommended for safety. Weekly Maintenance Clean In-Line Filter. Turn OFF the pump motors.. Carefully unscrew the lower bowl from the filter top and lift out the screen. 3. Using water, flush the bowl assembly and any contaminated sediment.. Submerge the screen/bowl assembly into a high-level chemical disinfectant solution. Follow the disinfectant manufacturer's recommendation for time interval required to achieve disinfection. 5. Remove the screen/bowl assembly from the disinfectant solution and rinse using tap water. 6. Properly dispose of the contaminated sediment and disinfectant solution waste. 7. Replace the screen and make sure the gasket is in place before replacing the bowl. 8. Check all connecting vacuum, waste and water lines for tightness. 9. Turn ON the pump motors to check for leaks and proper function. Inspect Operatory Filters Check and clean all operatory and secondary filters weekly. Follow the equipment manufacturer s recommendations. Inspect Vacuum System Check the system weekly for water leaks and loose or broken connections. Monthly Maintenance Check Vacuum Level The vacuum level of the Barracuda Dual Wet Vacuum is preset at the factory. Recommended Operating Vacuum Levels: 0" Hg. General Dentistry or 9" Hg. Surgery The vacuum gauge will indicate the vacuum level provided by the pump. If it becomes necessary to adjust this setting, the following steps can be taken: 3

15 Section IV Operation & Care NOTE: Turn On one pump vacuum level adjustments are made with only one pump operative. NOTE: The evacuator should be left ON when setting the vacuum level. Also, make sure all hoses in the operatory are closed.. Turn the locknut counterclockwise to loosen.. For greater vacuum level, turn the screw clockwise; for less vacuum level, turn screw counterclockwise (Figure ). Figure. Vacuum level 3. Set to desired vacuum level and tighten locknut. Cleaning Instructions CAUTION Some parts/components on the vacuum unit get hot during operation. Provide the equipment ample time to cool prior to cleaning. Barracuda TM Dual User Manual NOTICE Failure to use the water recirculator cleaner as directed (sample included with recirculator) will VOID the manufacturers warranty! NOTE: This procedure should be performed once or twice a month, depending on workload.. Turn the vacuum pump OFF.. Remove the lower bowl of the filter at the pump location (Figure 3). 3. Separate and clean the filter screen, gasket and bowl.. Re-insert the gasket and screen into the bowl. Then empty the contents of one recycler cleaner package into the bottom of the bowl. 5. Carefully replace the bowl assembly back into the filter head at the pump location. 6. Turn the pump ON and operate normally.. Always disconnect the power from the equipment prior to cleaning.. All components can be safely wiped down with a damp cloth, wet with water. We do not recommend using any cleaners or harsh chemicals to clean this equipment since their potentially harmful effects have not been evaluated. 3. Do not heavily wet electrical components. Allow equipment to air dry or dry with clean, soft cloth. 5. Reconnect power to the equipment. Water Recirculator Cleaner (Reorder Recycler Cleaner PN: 65689) Gasket Filter Screen Bowl Figure 3. In-line filter

16 Section V User Service Info Service Instruction The following troubleshooting charts should be used when attempting to isolate Barracuda Dual Wet Vacuum operational problems. If the problem is not addressed in the troubleshooting chart or cannot be isolated by performing the suggested procedures, contact your local DentalEZ full-service dealership. Please have the following product information available: Model Name Model Number Serial Number Installation Date Pump Will Not Run Vacuum Pump Symptom Possible Cause(s) Solution Check all wires for loose or broken connections. Check fuse. Check low voltage leads (yellow and black wires) for volts. System chart, page 6). Motor Stops or Will Not Start Turn power on and off watching to see if relay breaker bar operates properly. Test solenoid valve by loosening brass nut on right side. If water flows out with power on, turn power off. Water flow should stop. Caution: NO NOT operate the pump for an extended time, because running the pump without water could cause internal damage. Circuit breaker, electric disconnect box, main cut-off and low voltage operatory switches are in the OFF position. Unit is not plugged in. Loose or broken wires. Motor hums, indicating a bad capacitor Tight or noisy motor. Motor is overheating. Troubleshooting If voltage is not present, replace the transformer or fuse. (Also see Electrical If relay is not operating properly, and assuming all other parts are good, replace the relay. (Also see Electrical System chart, page 6). If water flow does not stop with power off, replace the solenoid valve. Place switches in ON position. Plug in unit. Tighten, repair or replace wires. Replace capacitor. Check bearings. Make sure pump is properly shimmed to the motor, or remove any debris in the pump. Make sure the vacuum relief valve is adjusted properly and the motor has sufficient ventilation and water supply. Check for low line voltage. 5

17 Section V User Service Info Barracuda TM Dual User Manual Low or no vacuum Vacuum Pump (Continued) Symptom Possible Cause(s) Solution Clean operatory and secondary filters if necessary. Dirty filter Turn pump OFF immediately to prevent internal damage, then unclog water control Water control assembly clogged, not allowing water to go through pump. assembly. Pump not running because of suspect electrical problem. Loose or broken vacuum line connections. Swing check valves clogged allowing pump to suction through the other pump. Pump is worn out. Insufficient water supply. Electrical System Tighten, repair or replace vacuum line connections. Take off the top of the valve and, if possible, remove debris. Otherwise, the valve should be replaced. Refer to pump repair section. Check supply where it connects to the cabinet. Then, check the water control valve. The water control solenoid valve opens when the pump is turned on. Check this function by disconnecting the water line that enters the vacuum housing and by holding a container under the valve. Then, turn on the pump. There should be a steady stream of water. CAUTION: DO NOT LEAVE PUMP RUNNING WITHOUT WATER! If there is no water flow, replace the water control solenoid valve. Symptom Possible Cause(s) Solution Main power supply has blown fuse or circuit breaker. Motor does not start by switch. Power not reaching pump or incorrect voltage. Blown fuse in the control box. Loose connections inside the control box. Defective transformer or coil in the relay. Replace blown fuse or reset circuit breaker. Check connection box on the side of the dual cabinet to verify power is reaching the pump and main power supply is the correct voltage. Replace the fuse with the same rated capacity as the one from the factory. Remove the control box cover and visually inspect for loose connections. (Refer to the schematic inside the control box cover for the components and wiring scheme for that particular box.) Using a non-conductive device, push in the tabs on the relay to determine if the motor will start. Then using electrical test equipment, verify the voltage coming out of the secondary side of the transformer. If it is less than V, replace the relay. 6

18 Section V User Service Info Relay Box MOTOR BLUE BLACK GREEN & YELLOW BLACK BROWN RED WHITE BLACK BROWN BLUE YELLOW L/N L GREEN & YELLOW BLACK LIGHT BLUE BROWN BROWN & WHITE PURPLE Figure. Relay box wiring diagram PN: 65965F July, 08 WARNING For continued protection against fire hazard: Correct fuse must be used. 30 Volt Pump Fuse Replacement For 60 Hz Use: BUSS MDL or MDQ 50V AC 5/00 A Littlefuse 33 50V AC 5/00 A Slo-blo For 50 Hz Use: BUSS MDL or MDQ 50V AC / A Littlefuse 33 50V AC / A Slo-blo Fuse Replacement 7

19 Section V User Service Info Barracuda TM Dual User Manual Wiring Schematic Relay Solenoid Switch Relay Solenoid Switch Figure 5. Fuse V Primary Transformer Fuse V Primary Transformer Motor Relay A OL Relay B Relay A OL G L L G Motor G Relay B L3 L The Dual Wet Vacuum electrical control system is a low-voltage (V) circuit, designed to provide two totally independent control systems for each pump unit. This system also provides automatic control of the water supply system for each pump. The wiring schematic shows for electrical rough-in (Figure 5). (Refer to the Installation section of this manual.) (See Pages 3 and for further information on rough-in and final hook-up locations.) Air/Water Flow Circulation Diagram Gauge 3 6 Pump Intake Manifold Pump 5 Exhaust Manifold 8 Relief Valve Water Vacuum The circulation diagram shows the relationship of all the major assemblies to the total system. All connecting lines are marked with a symbol to indicate their function: vacuum line, water line or waste line (Figure 6). The assemblies are individually broken down and further explained in other sections of this manual. Figure 6. Waste 660 Valve, Water Shutoff Valve, Swing Check Valve, Anti-Siphon A Valve, Flow Control - HP B 6600 Valve, Flow Control - HP Valve, Solenoid (Only) Filter, Water Muffler, Vacuum Relief Valve, Vacuum Relief 8

20 Section V User Service Info Pump Removal WARNING To prevent any chance of electrical shock, always disconnect power when indicated. If the motor does not start after checking through the troubleshooting charts, the motor may be defective. If the pump must be removed for factory repair or replacement, perform the following steps:. Turn OFF power to the vacuum system at the circuit breaker or electrical disconnect box.. Use a Phillips-head screwdriver to loosen the two #0-3 pan head screws securing the electrical box cover plate, then remove the cover plate. 3. Disconnect the pump electrical supply cord from the relay and remove from electrical box.. Using the manual valve, turn OFF the water supply. 5. Disconnect the water line to the pump being removed. 6. Disconnect the waste and input lines from the pump being removed and cap off the lines using the closure plugs provided. 7. Disconnect the low voltage wires from the remote switch circuit. 8. Remove the wing nuts. Vacuum Pump System Repair Procedure WARNING Do not attempt these repairs in the dental office. Tools Required WARNING To prevent any chance of electrical shock, always disconnect power when indicated. Wire Stripper/Crimper /", 5/6", /3" and 3/8" Nut Driver 7/6", /", 9/6" and 5/6" Open-end Wrench, 5/6", 5/8", 3/", -3/" Socket Ratchet Torque Wrench Hammer Flat-blade Screwdriver Wire Cutter Needle-nose Pliers Channel-lock Pliers Paint Scraper Pop Riveter Bench Vise DOW CORNING Silicone Grease Loctite Thread Sealant Brown #57 Loctite Threadlocker Blue #3 Loctite Threadlocker Red #7 Phillips-head Screwdriver NOTE: Retain all hardware for reinstallation. Test Procedure Diagnostic Determine if the required repair procedure is electrical or mechanical.. Turn OFF power to the vacuum system at the circuit breaker or electrical disconnect box.. Disconnect the pump electrical supply cords from the dual electrical boxes. 3. At the needle valves, turn OFF the main water supply to the cabinet. 9

21 Section V User Service Info Barracuda TM Dual User Manual. Use Phillips-head screwdriver to remove the two #0-3 round head screws securing the drip plates to the top of the motor, then remove the bushing and drip plates (Figure 7). Wires Water Line Two #0-3 Round Head Screws () Drip Plate #0-3 Pan Head Screws Water Line Figure 9. 3/8-6 Bolt Figure Remove the dust cover located at the top center of the motor (Figure 8). Fuse Dust Cover Electrical Box Cover Plate Figure 8. Drive Shaft Slot 6. Using a flat-blade screwdriver, engage the slot in the drive shaft and rotate the shaft to check for free movement: If the shaft moves smoothly, proceed to Electrical Box Removal. If the shaft is difficult to turn or is jammed, proceed to Pump Disassembly. Electrical Box Removal NOTE: Most electrical repairs can be performed without removing the pump from the cabinet.. Use a Phillips-head screwdriver to loosen the two #0-3 pan head screws securing the electrical box cover plate, then remove the cover plate (Figure 9).. Check the wire leads to the motor for breaks or bad connections. 3. Check the fuse and check for loose or broken wires in the electrical box (Figure 0). Figure 0.. Disconnect the pump electrical supply cord from the relay and ground screw, then remove from electrical box. 5. Disconnect the wires from behind the faceplate of the cabinet and pull through the box. 6. Remove the two water lines from the water manifold. 7. Use a 9/6" wrench to remove the 3/8-6 bolt that secures the electrical box bracket to the motor/pump. 8. Use a " socket to remove the chase nipple that secures the electrical box to the motor, then remove the electrical box. Pump Disassembly. Remove the motor cover plate (top of motor).. Disconnect the three electrical box wires from the switch located behind the faceplate of the cabinet. 0

22 Section V User Service Info Motor Pump Assembly Removal. Disconnect the pump vacuum and exhaust lines and install line closure plugs.. Shut OFF the valve at the water control manifold. 3. Disconnect the pump water line (Figure ). Vacuum Intake 7. Remove the impeller (Figure 3): a. Use a 5/8" ( HP) or 3/" ( HP) socket to remove the 7/6-0 ( HP) or /-0 ( HP) flex loc nut, securing the impeller in place. b. Use a -3/" socket to remove the impeller. c. Inspect the impeller for any pitting or scoring. Impeller Hose Clamps Flex Loc Nut Water Line Figure. 5/6-8 Wing Nuts Figure Use a 9/6" wrench to remove the four 3/8-6 bolts that secure the pump housing to the motor, then remove pump housing (Figure ).. Disconnect the two motor wire leads from the electrical terminal. 5. Remove the 5/6-8 wing nuts from the pump base (four nuts - HP pump; three nuts - HP pump). 6. Take off the base by using a /" wrench to remove the four or five 5/6-8 bolts and lock washers that secure it to the pump housing, then inspect the base for excessive scoring or side wear (Figure ). 3/8-6 Bolts () Figure. Pump Housing 9. Remove the water seal spring assembly. 0. Inspect the housing for pitting or scoring. 5/6-8 Bolts ( or 5) and Lock Washers Base Figure.

23 Section V User Service Info Barracuda TM Dual User Manual Pump to Motor Assembly. Apply silicone grease to the motor shaft, seal and pump housing.. Press the seal into the pump housing with the ceramic side facing outward (Figure 5). Shims (Left Side) Shims (Right Side) Ceramic Side Figure 5. Nylon Side 3. Carefully reinstall the pump housing onto the motor shaft.. Install the spring seal with the nylon side in contact with the ceramic washer. NOTE: Lubrication of the motor shaft will ease installation. 5. Remove any grease from the motor shaft threads. Apply Loctite 7 to the threads of the motor shaft. (Allow 0 minute cure time). 6. Reinstall the impeller onto the shaft with the flat side facing the motor. Torque the impeller to 380 in. lbs. 7. Install the flex loc nut. Torque the nut to 60 ft. lbs. 8. Align the housing so that the small elbow is opposite the electrical box mounting hole in the motor. Housing/Impeller Spacing. To properly space the impeller to the housing, slide two or three.03" shims between the housing and the motor at one corner (Figure 6). Figure 6.. Slide other shims of various sizes diagonally across from the corner in Step, until the impeller is snug with the housing. 3. Remove and add up all the sizes of the shims used. EXAMPLE: A total of.00" is used, divide that by to obtain.050". Use this amount minus an additional.005" for HP pumps and.00" for HP pumps for each corner. NOTE: For further explanation, see Shimming Procedure, page 3.. Apply Loctite 3 to the retained 3/8-6 bolt threads. Install bolts and required shims. Torque screws to 390 in. lbs (Figure 7). Shims and Bolt Figure 7.

24 Section V User Service Info SHIMMING PROCEDURE A. Insert shims between the motor and the housing at two opposite mounting legs until snug. B. Remove and add up the total thickness of the shims from both sides. EXAMPLE: Left Side + Right Side Shims Shims =.8 C. Divide the total by and subtract:.005 for HP motor.00 for HP motor EXAMPLE:.8 = =.059 D. Use the best combination of shims for the required shim dimension. EXAMPLE: Required Shim Dimension.059 Combine Shims E. Install a bolt and equal shim combinations at all four locations. 5. Check for free spin of the impeller by removing the motor from the fixture and rotating the impeller. (For proper fit, shims may need to be added or removed.) Base Figure 8. Gasket 5/6-8 Bolts & Lock Washers ( or 5) 7. Set the pump upright and insert a screwdriver into the slot on top of the motor. 8. Check for free spin and smooth operation of the pump. Vacuum Pump Operation Testing. To check for proper operation of the vacuum pump, connect to an electrical source, water and waste line.. Start the pump, then block the suction side of the pump and the vacuum relief valve. The vacuum level should read between 0"- 5" Hg. Shims may need to be added or removed for proper vacuum reading. (Refer to the Housing/Impeller Spacing section, page.) 3. Operate the pump for approximately one hour continuously to check for any water leaks, electrical problems and consistent vacuum level. 6. Apply Loctite 3 to the 5/6-8 bolt threads. Reinstall the base and gasket, aligning the intake and discharge ports, using the 5/6-8 bolts and lock washers. Torque bolts to ft. lbs. (Figure 8). 3

25 Section VI Parts List Barracuda TM Dual User Manual Frame Assembly The various parts of the Barracuda Dual Wet Vacuum are attached to the frame assembly. The table identifies each assembly and the drawing indicates its location Frame Assembly 6505 Intake Manifold Assembly MC 0/0 Decal Vacuum Gauge Rocker Switch Water Manifold Assembly Dual PVC Foot Dual Screw, /-0 -/" Waste Manifold Assembly Grommet, /", white Vacuum Control Assembly Motor Mount (pkg. of ) Clamp, Hanger, " EMT 0056 Dual Electric Box Assembly

26 Section VI Parts List HP Dual Pump Assembly SEE CHART Dual Pump Assembly, HP K Relay Unit, 60 Hz, w/o Recirc. Relay Unit, 60 Hz, w/ Recirc. Relay Unit, 50 Hz, w/o Recirc Water Manifold, 60/50 Hz, w/o Recirc Water Manifold, 60 Hz. w/ Recirc Motor, HP, 60 Hz Motor, HP, 50 Hz Elbow, Brass, /" Tube /" MIP Adaptor, Brass, " Hose /" MIP Elbow, Brass, /" Street 7 As Req Shim, Steel.005 Thick Shim, Steel.03 Thick Shim, Steel.05 Thick Shim, Steel.00 Thick Shim, Steel.00 Thick Housing, Brass, HP Ceramic Bearing Spring Seal Cap Screw, 3/8-6 " Impeller, Brass, Balanced, HP Housing Gasket, Fiber Base Plate, Brass, HP Internal Star Washer, 5/6" Cap Screw, 5/6-8 -/" Nut, Flexloc, 7/ Pipe Plug, Brass, /8" Motor Replacement Kit, HP Includes Parts 3, 7, 9, 0, 3 & 7 Housing Replacement Kit, HP Includes Parts 7, 8, 9, 0, 3, 5 & 6 Rotary Seal Replacement Kit, HP Includes Parts 9, 0 & Impeller Replacement Kit, HP Includes Parts, 3, 5 & Base Replacement Kit, HP Includes Parts 3, & 8 Lower Rebuild Kit, HP Includes Parts , 8, 9, 0,, 3,, 5, 6, 7 & 8 NOTE: See the Operation/Maintenance section, for detailed information on hookup and care of the Dual Wet Vacuum Pump. Dual Pump Assembly, HP Qty. Part No. Description 65868R 60 Hz, w/o Recirculator R 60 Hz, w/ Recirculator R 50 Hz, w/o Recirculator The Barracuda Dual Wet Vacuum is powered by two water injected, impeller type vacuum pumps. This type of vacuum producer runs quietly and generates a high mercury pull, which is adjustable from a normal operating range of 0 to inches of mercury to a high range of 8 to 0 inches of mercury for surgical applications. There are two vacuum pump sizes: the HP (model MC-0 FS) and the HP (model MC-0 FS, illustrated on page 6). The dual pump back-up system and the choice of vacuum power ranges make this a highly reliable and versatile evacuation system

27 Section VI Parts List Barracuda TM Dual User Manual HP Dual Pump Assembly SEE CHART Dual Pump Assembly, HP K Relay Unit, 60 Hz, w/o Recirc. Relay Unit, 60 Hz, w/ Recirc. Relay Unit, 50 Hz, w/ Recirc Water Manifold, 60 Hz, w/o Recirc Water Manifold, 60/50 Hz. w/ Recirc Motor, HP, 60 Hz Motor, HP, 50 Hz Elbow, Brass, /" Tube /" MIP Adaptor, Brass, " hose 3/" MIP Elbow, Brass, 3/" Street 7 As Req Shim, Steel.005 Thick Shim, Steel.03 Thick Shim, Steel.05 Thick Shim, Steel.00 Thick Shim, Steel.00 Thick Housing, Brass, HP Ceramic Bearing Spring Seal Cap Screw, 3/8-6 " Impeller, Brass, Balanced, HP Housing Gasket, Fiber Base Plate, Brass, HP Internal Star Washer, 5/6" Cap Screw, 5/6-8 -/" Nut, Flexloc, / Pipe Plug, Brass, /8" MIP Motor Replacement Kit, HP Includes Parts 3, 7, 9, 0, 3 & 7 Housing Replacement Kit, HP Includes Parts 7, 8, 9, 0, 3, 5 & 6 Rotary Seal Replacement Kit, HP Includes Parts 9, 0 & 3 Impeller Replacement Kit, HP Includes Parts, 3, 5 & 6 Base Replacement Kit, HP Includes Parts 3, & 8 Lower Rebuild Kit, HP Includes Parts 7, 8, 9, 0,, 3,, 5, 6, 7 & 8 Dual Pump Assembly, HP Qty. Part No. Description 65868R 60 Hz, w/o Recirculator 65868R 60 Hz, w/ Recirculator R 50 Hz, w/recirculator

28 Section VI Parts List Intake Manifold Assembly, Dual The intake manifold swing-check valves provide automatic isolation for the back-up pump when it is not operating. This prevents vacuum loss through the exhaust of the standby pump. When both pumps are operating, the swingcheck valves open to allow maximum air flow. The manifold is constructed of PVC and the valves are brass. Both materials are not affected by chemical disinfectants Intake Manifold Assembly Elbow, 3/" MIP " Shank Swing Check Valve, 3/" FIP 3 3 Bushing, Reducer " Slip /" FIP Cross, PVC " Slip 5 Elbow, Brass, /" Tube /8" 6500 MIP Nipple, Brass, 3/" Close PVC, " " Long Tee, " Slip PVC, " " Long Adaptor, PVC, " FIP " Slip PVC, " " Long 3 To Gauge Assembly 5 To Vacuum Relief To Left Pump 6 7 To Right Pump Intake Intake

29 Section VI Parts List Barracuda TM Dual User Manual Exhaust Manifold Assembly, Dual The exhaust manifold delivers liquid waste materials from both pumps to the drain line. The manifold is constructed of PVC to prevent chemical corrosion and buildup of organic and mineral wastes. The exhaust muffler connected to the drain line outside assures quiet operation Standard Exhaust Manifold Assembly 653 Elbow, Brass, " MIP " FIP Adaptor, Brass, " Hose " MIP 6580 Plug, PVC, -/" MIP 3 Water Recirculator Exhaust Manifold Assembly (Optional) Water Recirculator Exhaust Manifold Assembly (Optional) Bushing Reducer, -/" SLIP " FIP Elbow, Brass, " MIP " FIP 8 65 Elbow, /" Poly /8" MIP Adaptor, Brass, " Hose " MIP

30 Section VI Parts List Electrical Box Electrical Box Assembly 6530 Control Box Chassis 6530B Control Box Cover Decal, Low, V 6597 Decal, Fire/Shock Warning Decal, D V Elec. Diagram Decal, D V Terminal Block Fuse Clip Holder Relay, 30 AMP Capacity Screw, 0-3 /" Screw, 0-3, Green, Ground Screw, 8 /" Phillips 669 Screw, 6 5/6", Fuse Holder Screw, 6-3, Terminal Board Terminal Block Lock Washer, #0 Intl Star Primary Transformer, 5/30V Decal, Caution Low Volts Tag, Wire Usage Warning Wire Nut, Ideal, 7-B Gray Nipple, Chase, /" Nut Lock, /" Clamp, Cable Connector, Snap-in, Black Conduit, Black Washer, 7/8" Intl Star * Cover Outside K K Cover Inside Electrical Box Assembly Kit: 30V, 60 Hz, HP w/o recirc 30V, 60 Hz, HP w/ recirc 30V, 50 Hz, HP w/o recirc 30V, 60 Hz, HP, w/o recirc 30V, 60 Hz, HP, w/ recirc 30V, 50 Hz, HP, w/ recirc *Electrical Box Assembly Kits are complete with water manifold attached Plug, Breaker Hole Jumper, Terminal Block Decal, Fuse Replacement 5/00A, 30V Decal, Fuse Replacement /A, 30V Decal, Ground Electrical Rating Decal: 30V, 7.5A, 60 Hz, HP 30V, 7.5A, 60 Hz, HP 30V, 7.5A, 50 Hz, HP 30V, 7.5A, 50Hz, HP Fuse, 5/00 Amp, Slo-Blo, 50V (pkg. of ) (60 Hz) Fuse, / Amp, Slo-Blo, 50 V (50 Hz) 5 0 9

31 Section VII Repair Parts Barracuda TM Dual User Manual Water Control Assembly Water Control Assy, HP w/o Recirc Water Control Assy, HP w/ Recirc Water Control Assy, HP w/o Recirc Water Control Assy, HP w/ Recirc Elbow, Brass, /" Tube /8" MIP Water Filter, /8" FIP Nipple, Brass, /8" MIP Solenoid Valve Adaptor, Brass, /8" MIP /8" FIP Elbow, Brass, /" Comp. /8" MIP Water Tube, 6" Straight Connector, /" Tube /8" MIP Bushing, Reducer, Brass, 3/8" MIP /8" FIP Anti-syphon Valve, 3/8" FIP Flow Control Valve: / GPM, HP, w/o Recirculator GPM, HP, w/o Recirculator /8 GPM, HP, w/ Recirculator / GPM, HP, w/ Recirculator 650 Elbow, Brass, 3/8" MIP Check Valve, 3/8" FIP or Adaptor, Brass, /" Tube 3/8" MIP Tube, /" Water Filter & Elbow Kit Includes Parts, & Water Tube Kit Includes Parts 5, 6, 7, 8 & Check Valve Kit, HP, w/o Recirculator Includes Parts,, 3, & Check Valve Kit, HP, w/o Recirculator Includes Parts,, 3, & 5 The water control system of the Barracuda Dual Wet Vacuum provides the pumps with the water flow required for proper suction and supplemental cooling. Automatic and independent water control is provided for each pump. Filters protect the system from damage due to solid materials in the water supply. Flow valves control the amount of water supplied to each pump WITHOUT RECIRCULATOR 3 WITH RECIRCULATOR

32 Section VII Repair Parts Vacuum Control Assembly Vacuum Control Assembly 657 Elbow, PVC, 3/" MIP " Shank 6600 Vacuum Relief Valve Elbow, Brass, 3/" FIP x 3/" MIP Bushing, PVC, -/" SLIP 3/" FIP Filter Element, Vacuum Relief Valve Screw, 8 /" Phillips Cap, PVC, -/" Slip The vacuum control assembly is attached to the central section of the front control panel. The valve in this assembly provides automatic regulation of the vacuum flow in the system. The vacuum level can be adjusted for different system requirements. The vacuum gauge is connected to a fitting on this assembly. Vacuum Gauge and Adapter Vacuum Gauge Assembly * Adaptor, /" FIP /" Poly *Not included in assembly. In-Line Filter Assembly, " In-Line Filter Assembly, " In-Line Filter Body, " 6568 Screen (", 0 Mesh, -/" D -/" L) & Gasket 3 Screen (", 0 Mesh, -/" D -/" L) 6568 Gasket & Bowl (Clear) 650 Bracket, " In-Line Filter Holder Adaptor, PVC " MIP -/" Shank or Adaptor, PVC " MIP " Shank Bracket, In-Line Filter Wall Mount Screw, 0 x /" Pan Head Phillips

33 Section VII Repair Parts Barracuda TM Dual User Manual Anti-Siphon Valve Assembly 660 Anti-Siphon Valve Assembly A Anti-Siphon Repair Kit Water Solenoid Valve Assembly Water Solenoid Valve Assembly 3

34 Limited Warranty RAMVAC Barracuda TM Dual Wet Dental Vacuum System DentalEZ and its employees are proud of the products we provide to the dental community. We stand behind these products with a warranty against defects in material and workmanship as provided below and have our own in-house repair facility to service our products. In the event that you experience difficulty with the application or operation of any of our products, please contact our customer service department at our expense at (866) DTE-INFO. If we cannot resolve the issue by telephone, we will arrange for a representative to contact you or suggest that the product be returned to our factory for inspection. If product return or repair is required, we will provide you with a Return Authorization number and shipping instructions to return the product to the proper facility. If the product is under warranty, we will ask you to provide proof of purchase such as a copy of your invoice. Please be sure to include the Return Authorization number on the package you are returning. Products returned without a return authorization number cannot be repaired. Freight costs for product returns are the responsibility of the customer. Products under warranty will be repaired or replaced, at our sole discretion, and returned at our expense. Products outside the warranty limits will be repaired and returned with costs invoiced to the customer. We are not responsible for shipping damages. We will, however, help you file a claim with the freight carrier. Written repair estimates are available. DentalEZ warrants all equipment and parts to be free of defects in material and workmanship, under normal usage, under the following terms: RAMVAC Limited Warranty Period* Barracuda TM Wet Dental Vacuum Systems 5 Years from date of installation Bulldog & Bison Dental Vacuum Systems Years from date of installation Vacuum Pumps Only (excludes Badger TM LF and Barracuda TM ) 0 Years from date of installation Osprey TM Compressors 6 Years /,00 hours from date of installation (whichever comes first) OWL TM Touch Years from date of installation Badger TM LF Dental Vacuum System Years from date of installation Badger TM LF Pump Only 5 Years / 0,000 hours from date of installation (whichever comes first) NXT Hg5 Amalgam Separator Years from date of purchase NXT Hg5 Collector Container Year from date of purchase Please note the following additional terms of our warranty and return policy: This warranty covers manufacturing defects only and does not cover defects resulting from abuse, accidents, misuse, improper handling, cleaning, care or maintenance. Damage resulting from the use of chemicals, cleaners, disinfectants or sterilization is not covered under this warranty nor is normal wear and tear. Failure to follow or observe our operating/use, maintenance and/or installation instructions voids this warranty as does the use of non-authorized parts and repairs made by an unauthorized repair facility. Liability is limited to repair or replacement of the defective part(s) or products at our sole discretion. All other liabilities, in particular liability for damages, including, without limitation, special, exemplary, consequential or incidental damages are excluded. THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY IMPLIED WARRANTIES OF MERCHANT- ABILITY OR FITNESS FOR A PARTICULAR PURPOSE. NO EMPLOYEE, REPRESENTATIVE OR DEALER IS AUTHORIZED TO CHANGE THIS WARRANTY IN ANY WAY OR TO GRANT ANY OTHER WARRANTY. WARRANTY REPAIRS: Parts repaired or replaced on a product that is in warranty will be warranted for the duration of that product s original warranty. PRODUCT RETURNS: Opened products or product returns more than a year old cannot be returned for credit. There will be a 5% ($5.00 minimum) restocking charge on all items authorized for return. NOTES: *Provided conditions defined in instuction manual are met. DentalEZ is a registered trademark of DentalEZ, Inc. RAMVAC, Bison, Bulldog, FLOWCHECK, InfiniTank, Otter, Ramclean and VACHECK are registered trademarks and Badger, Barracuda, Osprey, OWL, OWL Touch and SlugBuster are trademarks of RAMVAC Dental Products, Inc. DentalEZ Alabama, Inc., 08 33