Technical Reference Operating and Troubleshooting the C4A Electronic Coin Washer- Extractor

Transcription

1 Published Manual Number/ECN: MAT30C4AAE/ N Publishing System: TPAS Access date: 03/14/2002 Document ECN's: Latest Available Technical Reference Operating and Troubleshooting the C4A Electronic Coin Washer- Extractor PELLERIN MILNOR CORPORATION POST OFFICE BOX 400, KENNER, LOUISIANA , U.S.A.

2 Please Read About the Manual Identifying Information on the Cover The front cover displays pertinent identifying information for this manual. Most important, are the published manual number (part number) /ECN (date code). Generally, when a replacement manual is furnished, it will have the same published manual number, but the latest available ECN. This provides the user with the latest information applicable to his machine. Similarly all documents comprising the manual will be the latest available as of the date the manual was printed, even though older ECN dates for those documents may be listed in the table of contents. When communicating with the Milnor factory regarding this manual, please also provide the other identifying information shown on the cover, including the publishing system, access date, and whether the document ECN s are the latest available or exact. References to Yellow Troubleshooting Pages This manual may contain references to yellow pages. Although the pages containing troubleshooting procedures are no longer printed on yellow paper, troubleshooting instructions, if any, will be contained in the easily located Troubleshooting chapter or section. See the table of contents. Trademarks of Pellerin Milnor Corporation The following, some of which may be used in this manual, are trademarks of Pellerin Milnor Corporation: Ampsaver Dye-Extractor Gear Guardian Milnet Staph-Guard Autolint Dyextractor Hands-Off Milnor System 4 Auto-Purge E-P Express Hydro-Cushion Miltrac System 7 Autovac E-P OneTouch Mildata Miltron Totaltrol CBW E-P Plus Comments and Suggestions Help us to improve this manual by sending your comments to: Pellerin Milnor Corporation Attn: Technical Publications P. O. Box 400 Kenner, LA Fax: (504)

3 Table of Contents for MAT30C4AAE/ N Operating and Troubleshooting the C4A Electronic Coin Washer-Extractor Page Description Document/ECN 1 About This Manual MHT30C4AAE/9274AV 2 Safety for Coin Operated Washer-Extractors BIRMCS01/ Section 1: Commissioning 10 The C4A Electronic Coin Washer-Extractor Control MSOP0503AE/9274AV 11 Section 2: Operating 12 Operation of C4A Electronic Coin Washer-Extractor MSOP0502AE/9274AV 15 How to Set Required Number of Coins MSIN0501AE/9274AV 17 Section 3: Troubleshooting 18 Testing Display, Inputs, and Outputs on the Electronic Coin Washer-Extractor MSTS0501AE/9274AV 23 How to Correct Errors with the C4A Control MSTS0502AE/9274AV 25 Section 4: Supplemental Information 26 The Hardware in C4A Electronic Coin Washer- Extractor Controls 28 How to Change EPROMS in Microprocessors and Where to Check the DC Voltages MSFD0503AE/9274AV MSSM0217AE/9020IV

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5 ABOUT THIS MANUAL MHT30C4AAE/9274AV (1 of 1) ËScope This instruction manual is intended to provide operating and troubleshooting instructions for the C4A electronic coin washer-extractor control. Refer to the INSTALLATION AND SERVICE manual for information on machine installation procedures, mechanical requirements, preventive maintenance, service procedures, and mechanical parts identification. Refer to the SCHEMATIC MANUAL for electrical parts identification and electrical troubleshooting. ËQuick Reference Tabs The tabs along the right edge of the manual mark vital information. SAFETY READ FIRST Safety instructions must be read before operating machine. COMMISSIONING Commissioning instructions ensure proper start up. CONTENTS See Table of Contents for section/page numbers of cross references used herein. CHANGES/NEW MATERIALS These, if any, will be found in an envelope inside the rear cover. ËThe Power Up Sequence Verify that the machine behaves as described in OPERATION OF C4A... (see Table of Contents). Any other display indicates an error condition which must be corrected before the machine will operate. See HOW TO CORRECT ERRORS WITH THE C4A CONTROL. ËManual Number/Date Code (When To Discard or Save) The manual number/date code is located on the inside front cover, upper right corner just above the manual name. Whenever the manual is reprinted with new information, part of this number changes. If the date code after the / changes, the new version applies to all machines covered by the old version, but is improved thus the old version can be discarded. If the manual number before the / changes, the new manual covers only new machines. Example: Discard MATMODELAE/8739CV when MATMODELAE/8739DV is received (minor improvements). Also, discard MATMODELAE/8739DV when MAT- MODELAE/8746AV is received (major improvements). But keep MATMODELAE/8746FV when MAT- MODELBE/8815AV is received, since the new manual no longer applies to machines originally shipped with the old manual. ËDocuments and Change Bars The individual documents comprising this manual use the same revision criteria as the manual. Text documents also display change bars. Example: When section MSOP0599AE/9135BV becomes MSOP0599AE/9135CV, change bars with the letter C appear next to all changes for this revision. For a major rewrite (e.g., MSOP0599AE/9226AV), all change bars are deleted. ËTrademarks of Pellerin Milnor Corporation The following, some of which may be used in this publication, are trademarks of Pellerin Milnor Corporation: Ampsaver Autolint Auto-Purge Autovac CBW Dye-Extractor Dyextractor E-P Plus Gear Guardian Hands-Off Hydro-Cushion Mildata Milnet Milnor Miltrac Miltron Staph-Guard System 4 System 7 Totaltrol

6 CQVUdi V_b 3_Y^?`UbQdUT GQcXUb5hdbQSd_bc 2 [ c`usc 4QdUc* " " #!" " " #!" " " #!" <Q^W* 5>7! 1``\YS* B=3 BPUTchU^a2^X]>_TaPcTSFPbWTa4gcaPRc^ab 6T]TaP[BPUTchAT`dXaT\T]cbb_TRXUXRfPa]X]Vb]Tgc_PVTP]S cwa^dvw^dc\p]dp[ Incorrect installation, neglected preventive maintenance, abuse, and/or improper repairs, or changes to the machine can cause unsafe operation and personal injuries, such as multiple fractures, amputations, or death. The owner or his selected representative (owner/user) is responsible for understanding and ensuring the proper operation and maintenance of the machine. The owner/user must familiarize himself with the contents of all machine instruction manuals. The owner/user should direct any questions about these instructions to a Milnor dealer or the Milnor Service department. Most regulatory authorities (including OSHA in the USA and CE in Europe) hold the owner/user ultimately responsible for maintaining a safe working environment. Therefore, the owner/user must do or ensure the following: recognize all foreseeable safety hazards within his facility and take actions to protect his personnel, equipment, and facility; work equipment is suitable, properly adapted, can be used without risks to health or safety, and is adequately maintained; personnel are familiar with all functional and safety aspects of the machine, and where specific hazards are likely to be involved, access to the equipment is restricted to those employees given the task of using it; only specifically designated workers carry out repairs, modifications, maintenance, or servicing; information, instruction, and training is provided; workers and/or their representatives are consulted. Work equipment must comply with the requirements listed below. The owner/user must verify that installation and maintenance of equipment is performed in such a way as to support these requirements: control devices must be visible, identifiable, and marked; be located outside dangerous zones; and not give rise to a hazard due to unintentional operation; control systems must be safe and breakdown/damage must not result in danger; work equipment is to be stabilized; protection against rupture or disintegration of work equipment; guarding, to prevent access to danger zones or to stop movements of dangerous parts before the danger zones are reached. Guards to be robust; not give rise to any additional hazards; not be easily removed or rendered inoperative; situated at a sufficient distance from the danger zone; not restrict view of operating cycle; allow fitting, replacing, or maintenance by restricting access to relevant area and without removal of guard/protection device; suitable lighting for working and maintenance areas; maintenance to be possible when work equipment is shut down. If not possible, then protection measures to be carried out outside danger zones; work equipment must be appropriate for preventing the risk of fire or overheating; discharges of gas, dust, liquid, vapor, other substances; explosion of the equipment or substances in =9<>?B 3?B@?B1D9?>

7 CQVUdi V_b 3_Y^?`UbQdUT GQcXUb5hdbQSd_bc ;Pd]Sah5PRX[Xch Provide a supporting floor that is strong and rigid enough to support with a reasonable safety factor and without undue or objectionable deflection the weight of the fully loaded machine and the forces transmitted by it during operation. Provide sufficient clearance for machine movement. Provide any safety guards, fences, restraints, devices, and verbal and/or posted restrictions necessary to prevent personnel, machines, or other moving machinery from accessing the machine or its path. Provide adequate ventilation to carry away heat and vapors. Ensure service connections to installed machines meet local and national safety standards, especially regarding the electrical disconnect (see the National Electric Code). Prominently post safety information, including signs showing the source of electrical disconnect.!?tab^]]t[ Train personnel what to do in case of emergencies. Inform personnel about hazard avoidance and the importance of care and common sense. Provide personnel with the safety and operating instructions that apply to them. Verify that personnel use proper safety and operating procedures. Verify that personnel understand and abide by the warnings on the machine and precautions in the instruction manuals. " BPUTch3TeXRTb Ensure that no one eliminates or disables any safety device on the machine or in the facility. Do not allow machine to be used with any missing guard, cover, panel or door. Service any failing or malfunctioning device before operating the machine. # <PX]cT]P]RT Ensure the machine is inspected and serviced in accordance with the norms of good practice and with the preventive maintenance schedule. Replace belts, pulleys, brake shoes/disks, clutch plates/tires, rollers, seals, alignment guides, etc. before they are severely worn. Immediately investigate any evidence of impending failure and make needed repairs (e.g., cylinder, shell, or frame cracks; drive components such as motors, gear boxes, bearings, etc., whining, grinding, smoking, or becoming abnormally hot; bending or cracking of cylinder, shell, frame, etc.; leaking seals, hoses, valves, etc.) Do not permit service or maintenance by unqualified personnel.! CWT3P]VTa5a^\PA^cPcX]V2h[X]STa A tremendous amount of potential energy is stored in the rotating cylinder of any washerextractor (even at slow speed). Washer-extractors are equipped with a door interlock designed to prevent the door from being opened if the cylinder is turning and to prevent the machine from starting unless the door is closed and locked. Some coin machine models permit the door to be opened only during the first few minutes of the formula and only while the machine is rotating in wash speed. If the door is opened, the drain valve opens immediately, the machine stops, and (provided the machine still has electric power), on most models a brake is immediately applied. 30=64A ) 4]cP]V[T P]S BTeTa 7PiPaSb Contact with goods being processed can cause the goods to wrap around your body or limbs and dismember you. The goods are normally isolated by the locked cylinder door. Do not put any part of your body in the machine while it is moving. Do not operate the machine with the door open. Do not attempt to open the door or reach into the cylinder until the cylinder is stopped. Do not touch goods inside or hanging partially outside the turning cylinder. Do not open the cylinder door with water in the cylinder. Do not tamper with or disable any safety device or operate the machine with a malfunctioning safety device. Request authorized =9<>?B 3?B@?B1D9?>

8 CQVUdi V_b 3_Y^?`UbQdUT GQcXUb5hdbQSd_bc Do not operate the machine with a malfunctioning door interlock. 30=64A! ) 4g_[^bX^] 7PiPaSb Cylinder A damaged cylinder can rip apart during extraction, puncturing the shell and discharging metal fragments at high speed. Do not operate the machine with any evidence of damage or malfunction. " CWT3P]VTa5a^\?a^RTbbX]VFXcW5[P\\PQ[T<PcTaXP[b Washer-extractors are manufactured specifically for use with water, not with any type solvent nor with any other material that might be flammable. They are not suitable for any type of solvent cleaning process. 30=64A " ) 4g_[^bX^] P]S 5XaT 7PiPaSb Flammable substances can explode or ignite in the cylinder, drain trough, or sewer. The machine is designed for washing with water, not any other solvent. Processing can cause solvent-containing goods to give off flammable vapors. Do not use flammable solvents in processing. Do not load machine with goods containing dry cleaning materials. Do not use the machine in the presence of solvent fumes. # CWT3P]VTa5a^\>_TaPcX]VFXcW6dPaSb^a2^eTabAT\^eTS Like other types of industrial equipment, Milnor washer-extractors utilize high voltage electrical power to drive a wide variety of moving parts. Even with external power completely removed, the machine may contain energy such as tensioned springs and heavy parts that may fall if released. As previously stated, the washer cylinder acquires tremendous potential energy during extract, which must be absorbed by the brake or permitted sufficient time to dissipate. Every guard, side panel, and door on the machine exists to isolate energized or moving parts from laundry personnel and must be securely in place for safe operation. 30=64A # ) 4[TRca^RdcX^] P]S 4[TRcaXRP[ 1da] 7PiPaSb Contact with high voltage will electrocute or burn you. Power switches on the machine and the control box do not eliminate these hazards. High voltage is present at the machine unless the main machine power disconnect is off. Do not unlock or open electric box doors. Do not remove guards, covers, or panels. Do not reach into the machine housing or frame. Do not service machine unless qualified and authorized. Know the location of the main machine disconnect and use it in an emergency to remove all electric power from the machine. 30=64A $ ) 4]cP]V[T P]S 2adbW 7PiPaSb Contact with moving components normally isolated by guards, covers, and panels, can entangle and crush your limbs. These components move automatically. Do not remove guards, covers, or panels. Do not reach into the machine housing or frame. Do not operate a damaged or malfunctioning machine. Request authorized service. Do not service machine unless qualified and authorized. Ensure that all personnel are clear of the machine before starting =9<>?B 3?B@?B1D9?>

9 CQVUdi V_b 3_Y^?`UbQdUT GQcXUb5hdbQSd_bc $ CWT3P]VTa^U4]caP_\T]cX]P2^X]<PRWX]T 30=64A % ) 4]caP_\T]c 7PiPaS A locking cylinder door can entrap anyone who enters the cylinder. The person can be killed or seriously injured. Most modern coin operated washer-extractors have a door interlock which, for safety, locks the door when the cycle starts (or a short time later). The door is unlocked when the cycle ends. If power is lost, the door unlocks so that goods may be removed if desired. When power is restored and the door is closed, most machines resume the interrupted cycle without additional coins and the door is again locked. In a tragic incident, a small child was placed, climbed, or was helped to climb into a front loaded coin machine and the door was then closed behind him. The door locked, the machine started running and the child was scalded to death. The laundry owner/operator must guard against entrapping anyone in a washer-extractor by doing the following: $ 8]bcP[[3XbR^]]TRcBfXcRWTb The National Electric Code (article ) requires a clearly marked electric disconnect switch in sight and no more than 50 feet from each machine. (Local codes may have additional requirements.) Make disconnect switches readily accessible, but not so accessible as to provide an attractive nuisance for playful children. You are urged to consult your licensed electrician and take immediate steps to comply if your installation does not now meet the National Electric Code requirement. $! 8]U^a\cWT2dbc^\Ta Post signs prominently in the laundry or use whatever additional effective means are available to inform the customer of the entrapment hazard, and how to minimize the hazard, including but not necessarily limited to the following: 1. that children must not be placed inside, nor be allowed to operate or play in or around any machine, 2. the location of the disconnect switch for each machine, and 3. what to do in the event of an emergency. $" CTbc3^^a8]cTa[^RZP]S2^X]2^d]cTa>_TaPcX^] Verify daily that the door interlock is functioning properly. Verify monthly that the machine cannot be made to operate by any means other than inserting the proper number of coins with the door closed (see accompanying document How To Test Your Milnor Coin Operated Washer-Extractor's Electronic Coin Counter and Locking-type Door Interlock ). $# 4]bdaT2hR[T2^\_[TcX^] After a power loss and subsequent restoration, immediately close the doors on all coin machines and complete the cycles of any machines which start up. Unattended stores must develop a procedure to address this circumstance. % 7^fC^CTbcH^da<X[]^a2^X]>_TaPcTSFPbWTa4gcaPRc^ab 4[TRca^]XR2^X]2^d]cTaP]S;^RZX]VCh_T3^^a8]cTa[^RZ J3^Rd\T]c 18A<2B!L =^cxrt & ) 4]bdaT BPUT >_TaPcX^] Confirm daily, the door interlock function. Confirm monthly, both the coin counter and the door interlock function. To test only the locking-type door interlock (daily), perform Step 6 and =9<>?B 3?B@?B1D9?>

10 CQVUdi V_b 3_Y^?`UbQdUT GQcXUb5hdbQSd_bc To test the electronic coin counter and the locking-type door interlock (monthly), perform all of the following steps, in order. Do not skip any step. Step 1. Make sure that power is ON to your machine. Step 2. Close the door. Do not insert coins. a. If the machine starts, let it run to the end of the cycle, then proceed to Step 3. (This may have been simply a restart in mid cycle when electric power is restored after a power interruption while the machine was running). =^ct ) Step 4 tests the possibility of a free wash simply by closing the door and Step 5 tests the possibility of a free wash when electric power is restored after a power interruption while the machine was not running. b. If the machine does not start, proceed to step 3. Step 3. Open the door. Now verify that the machine will not accept coins with the door open. a. If the machine accepts coins when the door is open, take it out of service, determine why, and fix whatever is wrong. (Perhaps the door switch is bad or the door switch actuator is jammed making the switch think the door is closed.) Do not return the machine to service until it successfully passes all seven steps described herein. b. If the machine does not accept coins with the door open, proceed to Step 4. Step 4. With the door open, manually operate the door switch actuator 100 times (Figure 1). Operate the actuator for one second ON (depressed), then one second OFF (released). If the machine completed steps 1, 2, and 3 successfully, this tests if simply closing the door will permit a free wash. a. If the machine starts while the door switch actuator is depressed, immediately take your hand off the door switch actuator and take the machine out of service until the coin counter has been changed. Do not return the machine to service until it successfully passes all seven steps described herein. b. If the machine does not start, proceed to Step 5. Figure 1: Door Switch Actuator Figure 2: Wall Mounted Power Disconnect Switch Step 5. With the door closed and the machine still in the unarmed condition (it has not yet accepted coins), turn the power ON and OFF 25 times at the wall-mounted power disconnect switch (Figure 2) or external circuit breaker. Turn power ON for five seconds, then OFF for five seconds). Observe if the machine starts at any time the power is turned ON. This tests if the coin counter will give a free wash when electric power is restored after power interruption while the machine was not =9<>?B 3?B@?B1D9?>

11 CQVUdi V_b 3_Y^?`UbQdUT GQcXUb5hdbQSd_bc a. If the machine starts without coins at any time as power is turned ON, take the machine out of service until the coin counter has been changed. Do not return the machine to service until it successfully passes all seven steps described herein. b. If the machine does not start without coins at any time power was turned ON and OFF 25 times, you probably have a good coin counter. Proceed to step 6. Step 6. Insert the proper number of coins. Verify that: the machine starts only after the last coin is accepted, and the machine will then accept no more coins. a. If the machine starts before the last coin is accepted or accepts more than the proper number of coins, take the machine out of service until you determine and fix what is wrong. Do not return the machine to service until it successfully passes all seven steps described herein. b. If the coin counter functions properly and the machine starts, wait a full 2.5 minutes, then proceed to step 7. 20DC8>= ' ) BRP[S 7PiPaSb Contact with hot bath liquor can scald you. During following step, hold the door firmly closed, as shown in Figure 3, to prevent door from springing open if the latch retracts during this test. Figure 3: Hold Door Shut When Testing the Door Interlock Step 7. After the machine has been running at least 2.5 minutes, and while manually holding the door closed (Figure 3), attempt to depress the door unlock handle. a. If the latch retracts, take the machine out of service until the problem is diagnosed and fixed. Do not return the machine to service until it successfully passes all seven steps described herein. b. If the latch does not retract, it is OK to return the machine to service (provided it also passes all other tests described herein). =^cxrt ( ) 4]bdaT BPUT >_TaPcX^] Confirm daily, the door interlock function. Confirm monthly, both the coin counter and the door interlock function. To test only the locking-type door interlock (daily), perform Step 6 and 7. To test the electronic coin counter and the locking-type door interlock (monthly), perform all of the following steps, in order. Do not skip any step. End of =9<>?B 3?B@?B1D9?>

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13 Section 1 Commissioning

14 MSOP0503AE/9274AV (1 of 1) ÈTHE C4A ELECTRONIC COIN WASHER-EXTRACTOR CONTROL All controls and displays for operation of the C4A are visible on the front panel (FIGURE 1). Controls and indicator lights for the M4A (single formula, non-coin) machine are shown in FIGURE Detailed explanations of the following items are given throughout this manual. ÊNameplate Controls ËSTART Button (optional) This button (optional, not shown) is enabled when the Run/Attendant keyswitch is set to Attendant. It allows an attendant to operate the machine without coins. ËSelect Temperature Buttons These three buttons allow the user to select the appropriate first bath water temperature for the goods loaded. ÊDisplay ËDeposit Coins Display When the machine is ready for normal operation (not running a wash cycle), these two digits display the number of coins required to start the machine. When the machine is running a wash cycle, this display is dark. In Test mode, this display is dark except for two flashing decimals. ËRun/Test Keyswitch When this keyswitch and the Run/Attendant keyswitch are set to Run, the machine operates normally. When this keyswitch is set to Test and the Run/Attendant keyswitch is set to Attendant, a qualified service technician may view the software version and troubleshoot certain machine functions by actuating displays, inputs, outputs, and functional tests. ËTest Button Depress this button to scroll among available tests (displays, inputs, and outputs) when the Run/Test keyswitch and the Run/Attendant keyswitch are set to Test and Attendant, respectively. ËTime Remaining Display During normal operation, this display shows the number of minutes remaining in the current wash cycle. When the machine is in Test mode, the individual segments of this display represent inputs, and illuminate as inputs are made. ËMachine Status Display During normal operation, this display shows which step of the wash cycle the machine is currently performing. When the machine is in Test mode, this display is dark except for a single flashing decimal. ËRun/Attendant Keyswitch When set to Run, the machine operates normally, requiring coins for starting. When set to Attendant, the optional push-button (START button) operation is enabled. This keyswitch must be set to Attendant to access the testing and troubleshooting functions of the control. ËTO REDUCE SUDS Button Used during normal operation to reduce the level of suds in the machine to a level below the Suds Level line on the loading door glass, thus increasing washing efficiency. During output testing, this button is used to toggle individual outputs and functional tests ON and OFF. ÎFIGURE 1 (MSOP0503AE) ÎNameplate of C4A Models

15 Section 2 Operating

16 MSOP0502AE/9274AV (1 of 3) ÈOPERATION OF C4A ELECTRONIC COIN WASHER-EXTRACTOR ENTANGLEMENT HAZARD The linen inside or hanging partially outside a turning cylinder can suddenly wrap around you hand, arm, or body and twist off/sever it. You can be killed or seriously injured. Control circuit is energized when power is applied After 80-second safety delay Load machine and close door ÊThe Power Up Sequence Software version (20003) is displayed for 80 seconds after power is applied. This safety delay prevents operation during this time. The display flashes the number of coins (example: 15) required. C (Close Door) flashes if door is open. See HOW TO SET REQUIRED NUMBER OF COINS (see Table of Contents). ÊHow To Start a Wash Cycle Load machine at or near rated capacity. Overloading or underloading may reduce efficiency. Select bath temperature Deposit coins Select water temperature according to the goods loaded. NOTE: As a factory-supplied option, the machine may be equipped for second and third baths to be cold only, regardless of the temperature selected. Operation begins when last coin is accepted. When first coin is accepted, display stops flashing and counts down number of coins inserted. Coins are rejected if the door is open. The door locks 1 minute after the machine accepts the last coin. ËHow To Counteract Oversuds If the suds level in the machine exceeds the Suds Level line on the loading door, reduce the suds level. Press TO REDUCE SUDS button on control panel The drain opens for 10 seconds, then closes. Machine refills after drain closes. NOTE: Suds reduction can be used a maximum of three times during each bath step. ËHow To Start by Pushbutton (optional) Pushbutton start is available as an option on all current coin machine models. The following procedure applies only if your machine is equipped with this option. Set Run/Attendant keyswitch to Attendant position, and press the Start button. Pushbutton start feature does not affect normal coin-start operation, which works with keyswitch in either position.

17 OPERATION OF C4A ELECTRONIC COIN WASHER-EXTRACTOR MSOP0502AE/9274AV (2 of 3) ÊDescription of Wash Formula FIGURE 1 shows timing and operation of the standard wash cycle. During operation, the Deposit Coins display is blank and the Time Remaining display counts down minutes. The decimal flashes when the timer is counting. ÎFIGURE 1 (MSOP0502AE) ÎWash Cycle Timing for C4A Models ÏWash Formula for 30015C4A and 30020C4A Models Selected Temperature Operation Time Coast Time Hot Warm Cold Bleach/Suds bath 6:00 1:00 Hot Split Cold Low-speed extract 1:00 0:30 Rinse 2:00 1:00 Split Split Cold Low-speed extract 1:00 0:30 Softener bath 2:00 1:00 Cold Split Cold High-speed extract 6:00 1:20 Total Time 18:00 + 5:20 = 23:20 As a factory option, second and third baths may be cold only.

18 OPERATION OF C4A ELECTRONIC COIN WASHER-EXTRACTOR MSOP0502AE/9274AV (3 of 3) ÊThe Power Restoration Sequence ËIf Machine Memory Is Corrupt If the machine loses power while a wash cycle is running and microprocessor memory is corrupt (current wash cycle is not retained), the machine resets as shown in The Power Up Sequence in this section. The microprocessor memory will remain intact approximately 24 hours without power. ËIf Machine Memory Is Intact AND Door Is Closed If the machine loses power while a wash cycle is running, and the wash cycle in progress is retained by the microprocessor, the control checks the status of the door latch when power is restored. If the control detects that the door is closed, the wash cycle resumes after an 80-second safety delay at the beginning of the step in which power was lost. If the control detects that the door is open, the machine resets as shown in The Power Up Sequence in this section. The drain opens as soon as the machine loses power, but if the power outage is brief, the liquor level may not fall enough to open the level switch. If the level switch is made when power is restored, the display indicates a Level Switch Fault (E3) until the liquor level in the cylinder falls enough to open the level switch. When the level switch opens, the machine clears the error and resumes the wash cycle at the beginning of the step in which power was lost. If the error does not clear automatically, see TESTING THE INPUTS, OUTPUTS, AND THE DISPLAY ON THE C4A ELECTRONIC COIN WASHER-EXTRACTOR. If power is lost during extract, the machine executes a recycle sequence shown below when power is restored: 1. Basket rotates clockwise at wash speed for 18.5 seconds. 2. Basket accelerates to distribution speed and maintains speed for 60 seconds. 3. Timer starts and basket accelerates to extract speed. If the interrupted step is a low-speed extract, the wash cycle proceeds normally. If the interrupted step is a final (high-speed) extract, the machine maintains low extract speed for 100 seconds, then accelerates to high extract speed. ÊAccessing the Formula Count Accumulator ËOperation The Formula Count Accumulator (FIGURE 2) tracks the number of times the wash cycle has been run. This cumulative counter automatically increments each time the final extract step begins. The accumulator may be viewed and compared to previous readings to determine the number of wash cycles, up to 999. After 999 counts, the accumulator resets to 000 when next incremented. Because the accumulator is maintained in capacitor-backed memory, a brief power loss should not affect the count. However, a power loss of more than 24 hours may cause memory loss, in which case an Accumulator Warning message (E1) appears on the display to indicate that accumulator memory was corrupted and reset to 0. Clear this error as described in Viewing and Clearing Counter in this section. ÎFIGURE 2 (MSOP0502AE) ÎAccumulator Display ËViewing and Clearing Accumulator The accumulator may be viewed only when a wash cycle is not in progress and the machine is not in Attendant mode. To view the counter, open the door and turn the keyswitch to Attendant. To clear the accumulator or an accumulator error, open the door, turn the keyswitch to Attendant and press OVERSUDS three times. The accumulator displays 000 until a wash cycle is run. Always check accumulator if power has been off for several days.

19 MSIN0501AE/9274AV (1 of 2) ÈHOW TO SET REQUIRED NUMBER OF COINS For all electronic coin washer extractors, the number of coins required to start the wash cycle is determined by a six-position DIP switch (SW1) on the processor board (see FIGURE 1). Each position of the DIP switch (numbered 1-6) represents a specific number of coins, as shown in the Table of Sample Coin Count Settings in this section. The total number of coins required to operate the machine for one wash cycle may be set from one to 63, inclusive. The required count is represented by the total of all switches set to the ON position. SHOCK HAZARD may cause severe injury. Lock OFF and tag out machine power at wall disconnect before removing panels. Using a small insulated screwdriver or wooden pencil, set the DIP switch for the desired number of coins. See the Table of Sample Coin Count Settings in this section for available settings. NOTE: The processor board to which the DIP switch is mounted is normally concealed by a dust cover. This dust cover must be removed to gain access to the DIP switch, and must be replaced to prevent dust accumulation on the processor board. ÎFIGURE 1 (MSIN0501AE) ÎDIP Switch (Positions 2 and 4 ON=10 coins)

20 HOW TO SET REQUIRED NUMBER OF COINS MSIN0501AE/9274AV (2 of 2) Coin Count Position 1 (1 coin) ÏTable of Sample Coin Count Settings Switch Position and Number of Coins Represented Position 2 (2 coins) Position 3 (4 coins) Position 4 (8 coins) Position 5 (16 coins) Position 6 (32 coins) 1 coin 6 coins 8 coins 10 coins 12 coins 16 coins 18 coins 20 coins 24 coins 30 coins 36 coins 42 coins 48 coins 51 coins 63 coins

21 Section 3 Troubleshooting

22 MSTS0501AE/9274AV (1 of 5) ÈTESTING DISPLAY, INPUTS, AND OUTPUTS ON THE ELECTRONIC COIN WASHER-EXTRACTOR The C4A electronic coin washer-extractor control includes several diagnostic features to aid in troubleshooting equipment problems. Procedures for using the following diagnostics are explained in this section: 1. How To View the Software Version allows verification of software version and machine configuration 2. How To Exit the Testing Procedure ends the testing procedure from any test. 3. How To Test the Displays verifies that display is fully operational 4. How To Test the Microprocessor Inputs verifies ON/OFF condition of inputs, and 5. How To Test the Outputs allows manual operation of machine outputs. CRUSHING AND ENTANGLEMENT HAZARD may result in loss of fingers or limbs. DO NOT operate this machine without all panels securely in place. The panels prevent access to the drive mechanism and hot components, including motors and solenoids. Ensure that all personnel are clear of the machine before restarting after service. SHOCK HAZARD may result in serious injury. Lock OFF and tag out machine power at wall disconnect. NEVER remove panels without turning OFF all power to the machine.

23 TESTING DISPLAY, INPUTS, AND OUTPUTS ON THE ELECTRONIC COIN WASHER-EXTRACTOR MSTS0501AE/9274AV (2 of 5) ÊHow To View the Software Version As MILNOR makes improvements to the software which controls these machines, the software version number changes. This information is often very helpful in troubleshooting errors and malfunctions. ËViewing Software Version During Power Up When power is first applied to the machine, the display will appear similar to FIGURE 1. This number is the software version; it will remain on the display for 80 seconds, then the normal operating display will appear. ËViewing Software Version After Power Up The software version can also be viewed after the power up sequence has finished provided the machine is not running a wash cycle. 1. Set the Attendant keyswitch to Attendant. 2. Set the Run/Test keyswitch to Test. The software version will remain on the display until the Test button is pressed. ËHow To Interpret the Software Version The first digit in the Deposit Coins display represents the machine class. In the case of 30015C4A and 30020C4A models, this number is 2. The ÎFIGURE 1 (MSTS0501AE) ÎSoftware Version Display (Typical) second digit in the Deposit Coins display is ignored for these models. The two digits in the Time Remaining display, along with the single digit in the Machine Status display, make up the revision of the software. NOTE: If the first digit in the Time Remaining display is an alphabetic character (A-Z), the software is non-standard; therefore, the wash cycle may not be the same as that described in OPERATION OF C4A ELECTRONIC COIN WASHER-EXTRACTOR (see Table of Contents). ÊHow To Exit the Testing Procedure The machine may be returned to Automatic mode at any time during testing by switching the Run/Test and Attendant keyswitches to Run.

24 TESTING DISPLAY, INPUTS, AND OUTPUTS ON THE ELECTRONIC COIN WASHER-EXTRACTOR MSTS0501AE/9274AV (3 of 5) ÊHow To Test the Displays C4A models are equipped with a Test button beneath the Run/Test keyswitch, as shown in FIGURE 2. Press this button once to begin testing the light emitting diode (LED) displays. All five digits will simultaneously display 1, then 2, etc., counting upward then repeating the sequence. All digits should be identical at any time. Press Test to end the Display Test and start the Input Test. ÊHow To Test the Microprocessor Inputs During this test each input signal to the microprocessor lights a specific segment of the Time Remaining display (see Figure 3 and Table of Microprocessor Inputs in this section). In Test mode with the input test active, the Deposit Coins display is dark except for two flashing decimal points (DP1 and DP2). Likewise, the Machine Status display is dark except for the flashing decimal. ÎFIGURE 2 (MSTS0501AE) ÎTesting Controls C4A Models If no inputs other than Test Mode are made, the Time Remaining display appears as shown in Figure 3 immediately upon beginning the input test sequence. Segment A2 corresponds to Test Mode; when this segment lit, the machine is functioning normally in Test mode. Other segments of the display represent other microprocessor inputs, as listed in the Table of Microprocessor Inputs in this section. Manually actuate each input for testing, and verify that the corresponding segment of the Time Remaining display illuminates. Segment A1 (OFF) represents the status of the Test button. Because the Test button scrolls the control through the available tests, pressing it after the input test is selected will advance the control to the output test without lighting segment A1. Assume that the Test button is operating correctly if the control switched from the display test to the input test when the Test button was pressed. Alternatively, press and HOLD the Test button while in the display test. Segment A1 will remain illuminated as long as the Test button is held. ÎFIGURE 3 (MSTS0501AE) ÎTime Remaining Display (Input Test Mode)

25 TESTING DISPLAY, INPUTS, AND OUTPUTS ON THE ELECTRONIC COIN WASHER-EXTRACTOR MSTS0501AE/9274AV (4 of 5) Segment Illuminated Input Name ÏTable of Microprocessor Inputs Connector- Pin Input Status when Illuminated A1 Test Button (SHPS) MTA4-6 Test button depressed. (This input can be tested only if the Test button is HELD DEPRESSED while in the display test.) B1 Door Interlock (CRDL) MTA4-5 Door is closed. C1 Run/Attendant Keyswitch (SK01) MTA4-4 Keyswitch set to Attendant. D1 not used E1 Low Water Level Switch(SPLL) MTA4-2 Low level switch (SPLL) is made. F1 Start Button (SHS+; optional) MTA4-1 Optional Start button is depressed G1 not used A2 Run/Test Keyswitch (SKM0) MTA5-6 Machine is in Test mode. B2 Oversuds Button (SHDR) MTA5-5 Oversuds button is depressed. C2 not used MTA5-4 D2 Normally-open Coin Switch (SMS$; 1-7) MTA5-3 Normally-open contact on coin mechanism is closed. E2 not used F2 Normally-closed Coin Switch (SMS$; 4-7) MTA5-1 Normally-closed contact on the coin mechanism is open. G2 not used ÎFIGURE 4 (MSTS0501AE) ÎTime Remaining Display Segments ÊHow To Test the Outputs Press the Test button to enter the output test from the input test. When the output test is active, the Deposit Coins display flashes 00. The Table of Manual Outputs in this section lists the tests of output relays and systems. Press the Test button to scroll the appropriate test (see Table of Manual Outputs) into the Time Remaining display. Press TO REDUCE SUDS to toggle the ON/OFF status of the output or functional test. Press the Test button to turn the output OFF and advance to the next output or functional test. In Test mode, the door locks when either motor is energized, and remains locked for 10 seconds after the motor is deenergized. When the door is closed, certain relays operate in combination; all relays function individually when the door is open. Functional tests 17 and 18 are not available when the door is open.

26 TESTING DISPLAY, INPUTS, AND OUTPUTS ON THE ELECTRONIC COIN WASHER-EXTRACTOR MSTS0501AE/9274AV (5 of 5) Test Number Output Relay ÏTable of Manual Outputs Relay Name or Functions Tested Result or Test Sequence Relay/Test status shown in Machine Status 01 K0 Clutch 0=engage extract clutch 1=engage wash clutch 02 K1 Cold water valve 0=close cold water valve 1=open cold water valve 03 K2 Hot water valve 0=close hot water valve 1=open hot water valve 04 K3 Coin rejector solenoid 0=accept subsequent coins 05 K4 Not used None 06 K5 Not used None 07 K6 Not used None 08 K7 Not used None 1=reject subsequent coins 09 K8 Extract Basket turns clockwise. Energize clockwise wash relay (CRWAC) and engage extract clutch. 10 K9 Distribution Basket turns clockwise. Energize extract relay (CREX) energized and engage wash clutch. 11 K10 Clockwise wash Basket turns clockwise. Clockwise wash relay (CRWAC) energized and wash clutch engaged. 12 K11 Counter-clockwise wash Basket turns counter-clockwise. Energize counter-clockwise wash relay (CRWAA) and engage wash clutch. 13 K12 Not used None 14 K13 Not used None 15 K14 Drain solenoid 0=open drain valve 1=close drain valve 16 K15 Door interlock 0=unlock door 1=lock door 17 Functional test Water valves, drain solenoid, level switch, and reversing wash speed 18 Functional test Extract speeds and vibration switch Door must be closed for this test. Engage wash clutch and open water valve(s). Basket reverses; water shuts off at level Open drain if oversuds pressed, machine refills when released. Door must be closed for this test. Energize clockwise wash relay and energize clutch for 20-second clockwise wash speed Energize distribution relay for 20-second distribution speed De-energize clutch and distribution relay, and energize CRWAC for 20-second low extract De-energize CRWAC and energize CREX for high extract If vibration switch is manually tripped during high extract, CRWAC replaces CREX in circuit, yielding low extract

27 ÈHOW TO CORRECT ERRORS WITH THE C4A CONTROL MSTS0502AE/9274AV (1 of 2) ÊLoading Door Open During Operation If the loading door should open during operation, the basket stops, the program timer stops, and the drain opens. The Machine Status display shows C (Close Door), as shown in FIGURE 1. When the door is closed, operation resumes from where it was interrupted. USE QUARTERS Time Remaining Machine Status ÎFIGURE 1 (MSTS0502AE) ÎDoor Open Error Display ÊOther Error Conditions If an error other than Loading Door Open occurs, the Time Remaining display flashes an error code corresponding to the error, and the Machine Status display alternately flashes E (Error) and U (Unload). Ë Accumulator Warning Time Remaining Machine Status formula count accumulator memory was corrupted and accumulator was reset to 000 This error may be caused by a protracted lack of power to the processor board, or when the machine is first started after the processor board is replaced (see Accessing the Formula Count Accumulator in OPERA- TION OF C4A ELECTRONIC COIN WASHER-EXTRACTOR (see Table of Contents)). Manually clear the accumulator to correct this error: 1. Open loading door, and set Run/Attendant keyswitch to Attendant. 2. Press To Reduce Suds button three times. 3. Return keyswitch to Run. Ë Coin Switch Fault Time Remaining Machine Status coin switch not responding properly, subsequent coins are rejected 1. Check for sticking for faulty coin switch. 2. Check input wiring and connections. 3. Correct error. 4. Turn Run/Attendant keyswitch to Attendant then to Run to clear display.

28 HOW TO CORRECT ERRORS WITH THE C4A CONTROL MSTS0502AE/9274AV (2 of 2) Ë Level Switch Fault Time Remaining Machine Status level switch normally open contact is CLOSED. Check for faulty level switch. Replace if necessary. Ë Too Long to Fill Error Time Remaining Machine Status maximum fill time (10 minutes) exceeded Software Date Codes before 20003: Operation terminates. Door unlocks after 15 seconds with operation disabled during delay. Software Date Codes and later: Machine continues to fill with water, basket reverses at wash speed. Error clears without manual intervention when level is achieved. Corrective Action: Check inlet water pressure, and check debris screens on inlet tubing. Ë Too Long to Drain Error Time Remaining Machine Status maximum drain time (40 seconds) exceeded Operation terminates, door unlocks after 15 seconds with operation disabled during delay. Check for clogged drain line or stuck drain valve. Corrective Action: Turn Run/Attendant keyswitch to Attendant then back to Run to clear display.

29 Section 4 Supplemental Information

30 ÈTHE HARDWARE IN C4A ELECTRONIC COIN WASHER-EXTRACTOR CONTROLS ÊGeneral MSFD0503AE/9274AV (1 of 2) The MILNOR C4A microprocessor control is designed specifically for MILNOR machines. Along with certain external electromechanical relay logic and sensing devices, they control all machine and system functions. Not every microprocessor includes all the following components. ÊThe Microprocessor Components Ë1. Keyswitches The RUN/ATTENDANT keyswitch and the RUN/TEST keyswitch allow access to the RUN and TEST modes only by authorized personnel. The RUN/ATTENDANT key may be removed only in RUN, and the RUN/TEST key may be removed only in RUN. Never leave keys accessible to unauthorized personnel. Ë2. Display The display is light emitting diode (LED). Ë3. Power Supply Converts control circuit AC voltage to +12VDC, -12VDC, and +5VDC for the CPU board. The power supply is auto switchable between 120VAC and 240VAC. Although the +12VDC and -12VDC are not adjustable, the +5VDC is rather sensitive and the power supply must be adjusted most accurately, so that the actual voltage at the Power Supply and at the CPU board is between 5.04 VDC and 5.06VDC as measured by an accurate digital voltmeter; otherwise the machine will likely malfunction. Ë4. CPU Processor Board The Central Processing Unit (CPU) processes data received from the various inputs, stores information, and responds to each pushbutton entry with the appropriate action. Data is stored in three microprocessor chips, which reside on the CPU. E-PROM contains fixed instructions programmed by MILNOR (software) that determine how the machine functions. Also contains the standard formulas for all industries. S-RAM stores the accumulator (formula count) data so long as the machine has power, or via a capacitor for approximately 48 hours with power off. Also stores where machine was last when power is turned off at machine.

31 THE HARDWARE IN C4A ELECTRONIC COIN WASHER-EXTRACTOR CONTROLS MSFD0503AE/9274AV (2 of 2) Ë5. Output Board The 16 output relays are socket-mounted SPDT electromechanical relays with contacts capable of faithfully conducting a maximum of 25VA (0.1 ampere or 100 milliamperes at 220/240VAC, or 0.2 amperes or 200 milliamperes at a maximum of 110/120VAC). The output will be either 220/240VAC or 110/120VAC depending on the machine model/type. These outputs and their power source are intended only to drive another relay with higher contact ratings that, in turn, may drive a pump, valve, solenoid, etc., from a separate power source. Never use these outputs to directly drive a pump, valve, or solenoid unless the maximum current required never exceeds the above values. Higher ampere or VA loads will burn out traces on the printed circuit board or possibly overload and damage the control circuit transformer.

32 MSSM0217AE/9020IV (1 of 5) ÈHOW TO CHANGE EPROMS IN MICROPROCESSORS AND WHERE TO CHECK THE DC VOLTAGES Occasionally, software enhancements become available. Depending upon the software change, the new software EPROMs (Erasable, Programmable, Read-Only Memory) may be offered for sale or for no charge to the customer. When a set of EPROMs is changed in the field, ensure that the software version being installed matches the machine hardware and that EPROMs are installed in the proper socket positions and orientation. ÊHow To Change EPROMs SHOCK HAZARD Electrical components on the machine conduct high voltage that will kill or seriously injure you on contact. D G Lock OFF and tag out electrical power at the main (wall) disconnect before beginning this procedure. 1. Make sure all power to the machine is off. B E 2. Locate the EPROMs as described in Location of EPROMs on Processor Board in this section. Note the orientation of the EPROMs as shown in FIGURES 3, 5, 7, and Slip a small flat tool underneath the EPROM, and carefully remove each old EPROM from its base, taking note of their numerical order (see FIGURES 3 and 7) and orientation to the key notch on the socket. 4. Install new EPROMs, making sure the key notch on the EPROM is properly oriented and that all pins enter the proper holes in the socket (FIGURE 1). If necessary, slightly bend the pins on the EPROMs to align them in the socket. After inserting each EPROM, verify that all pins are seated in the socket. ÎFIGURE 1 (MSSM0217AE) ÎProperly Seating the EPROM F F COMPONENT DAMAGE HAZARD Incorrectly installing any EPROM may cause EPROM burn out, machine failure, or display error. Match each EPROM with its corresponding socket. Each EPROM will work in only one socket, although it may physically fit in others. Align EPROM so every pin mates with the correct hole in the socket. ËVerifying Proper EPROM Installation After installing new EPROMs, apply power to the machine and turn the machine on. If the EPROMs are properly installed, the display will continue with the normal display sequence when powering up. If the display is blank or appears unusual, turn the machine off at once and check the orientation of the EPROMs.