MT300 Series Dehydrators

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1 INSTALLATION ADDENDUM MT00 Series Dehydrators.0 Introduction Page Installation Recent design improvements have been introduced on the MT00 Series Dehydrator that are not detailed in the printed manual. The following addendum lists the changes that apply to the unit you have received. Page Dehydrator Control, Indicators and Connectors. Rack Mounted unscrew the four rubber feet from the bottom of the dehydrator and replace with the four / x 0 PPH machine screws from the cloth bag attached to the dehydrator. Wall Mounted A template drawing (AE0B-D0-00) is provided to help in locating the positions for drilling holes in the wall. Page Installation The ac power cords are no longer "hard wired" to the dehydrator chassis. Now they plug into an IEC receptacle on the chassis and they are secured with a clamping metal strain relief. Page Installation NOTE: An alarm terminal strip and label have been added to the MT00 chassis (front view) and the low pressure alarm cable has been deleted (rear view). Customer connections for the low pressure alarm on an MT00 Dehydrator are made at a terminal block located at the front of the chassis. A label in front of the strip identifies the alarm terminal strip functions.

2 GRN GRY YEL PUR TB-0 TB-9 TB-8 TB-7 TB- TB- TB- TB- TB- TB- MT00 SERIES DEHYDRATOR ADDENDUM Page 9 Schematic Diagrams Wiring for the new version MT00 is shown below. There are wire color, wire routing and component changes. MT00-XX0XX NO NC C or GRY LOW PRESSURE ALARM SWITCH N G L ON/OFF SWITCH S L L M M FAN 0 SEC TIMER GRN CHASSIS MT00-XXXX NC NO C LOW PRESSURE ALARM SWITCH GRY -ALARM BOARD GRN/YEL OR POWER RELAY PR M HOUR METER IEC CONNECTOR G L N HUMIDITY SENSOR ELEMENT ON/OFF SWITCH S PRESS SWITCH L M L M PS QMS B FAN 0 SEC TIMER GRN CHASSIS E

3 MT00 SERIES DEHYDRATOR ADDENDUM Compressor 7. MFD 7. MFD GRN/YEL GRN/YEL VAC./COMP. MOTOR 0 VAC CONNECTION DIAGRAM CAPACITOR C INCLUDED WITH MOTOR VAC./COMP. MOTOR 0 VAC CONNECTION DIAGRAM CAPACITOR C INCLUDED WITH MOTOR VAC (-XXXX) 0 VAC (-XXXX) Triple Alarm Option: This optional assembly is designed to provide the additional Excess Run, High Humidity and Power Fail alarms to Andrew Dehydrators. All alarms are Form C dry contacts and are factory set for continuity at alarm. The external alarm monitoring system (not included) is connected to the terminal strip located at the top of the chassis. A small slotted screwdriver is necessary to make the connections. The connections to the alarm strip are as follows, and refer to Figure for correct locations and colors of the wires on the terminal strip.

4 MT00 SERIES DEHYDRATOR ADDENDUM Alarm Definitions: Excess Run: User settable run time to be set in accordance with the normal run time for the particular application. Selectable times are 0, 0, 0 and 0 minutes. See Figure for location of JP. Power Fail: Activates when power is removed from the dehydrator. This includes turning the power off at the switch. High Humidity: Activates when system or dehydrator output humidity rise above 7.% relative humidity. At initial installation, this alarm will continue to alarm until the system has been properly purged. Changing Alarm Outputs: The alarm outputs are factory set to prouide continuity on alarm. To change the Low Pressure alarm to NO, switch the push-on terminals on the alarm switch (center terminal is NO, bottom terminal is NC). Jumpers are provided on the triple alarm board for changing the contacts on the alarm relays. Terminal JP is for mains power fail alarm, JP is for the excess run time alarm, and JP is for the humidity alarm. See Figure for jumper locations. Both terminals are marked for the NC and NO options. Checking Alarm Operation: Checking correct alarm operation can be verified the most efficiently by using a continuity meter at the terminals of the alarm strip located on the front side of the unit. All contacts are form C dry contacts and will indicate an open or closed condition based on the jumpers set in the previous section. All contacts are preset at the factory for continuity on alarm. Humidity Alarm: At first power up, check the humidity alarm, because as the unit runs into the system or open air, the humidity alarm will clear, and the unit will have to sit idle in ambient air for a period of time in order for the humidity level in the internal parts to rise above the trigger point. Power Fail: Power fail is verified by alternating the power switch on the front of the unit from the ON to the OFF position and vice versa. Excess Run: The alarm timer is preset at the factory to 0 min, and this check will take the most time. It is recommended to check the excess run alarm during the initial run to purge the system.

5 MT00 SERIES DEHYDRATOR ADDENDUM Replacement Parts (Back Page) The complement of replacement parts has changed for the new MT00. Use the following list to identify and order replacement parts. DESCRIPTION TYPE NUMBER DESCRIPTION TYPE NUMBER Compressor AE0J-A9-00 Kit AE0K-D08-00 Power Switch (S) Vac AE0J-A Vac AE0J-A09-00 Circuit Breaker (CB) EBREK-7 Triple Alarm Circuit Board AE0J-B08-00 Fuse (Triple Alarm Board) AE0J-A9-00 Power Relay (PR) Vac ERLYP- 0 Vac ERLYP-8 Pressure Switch (PS) ESWPR-00 Pressure Switch (PS) AE0J-A07-00 Time Delay Module, 0 sec. (QMS) Vac ETMDM-00 0 Vac ETMDM-00 Dehydrator Overhaul Kit AE0K-C098-0 Coalescing Filter EFLTA-00 (complete assembly) Coalescing Filter Bowl EFLTA-8000 Coalescing Filter Element EFLTA-900 Water Filter, complete assembly EFLTA-00 Water Filter Bowl EFLTA-900 Water Filter Element EFLTA-900 Air Intake Filters, bag of AE0K-B08-00 Air Intake Filter EFLTR-00 (complete cartridge assembly) Back Pressure Regulator EVLVR-000 Evaporator Pan AE0A-C089 Evaporator Pan Tube Fitting EFTGS-0 Cooling Fan (sound deadened unit) Vac AE0J-A Vac EFANS-0 /" Tubing, clear, specify feet ETUBE-00 /" Tubing, black, specify feet - /8" Tubing, black, specify feet AE0K-D080-0 Pressure Gauge EGAUG-00 Compressor Isolators AE0J-A098-0 Power Cable Vac, UL/CSA Plug AE0J-A Vac, bare leads AE0J-A Power Cable Strain Relief (clamping) Vac AE0J-A Vac AE0J-A Heat Exchanger AE0M-D0-00 High Temperature Hose EHOSE-00 (compressor to heat exchanger, specify / foot) Low Temperature Hose EHOSE-00 (heat exchanger to water filter, specify foot) Hose Clamp ECLMP-0090 (High and Low Temperature hoses) Front Door Fasteners, bag of AE0K-D Rubber Feet, bag of AE0K-D / x 0 Machine Screws, bag of AE0K-D088-00

6 MT00 SERIES DEHYDRATOR ADDENDUM Andrew Corporation 000 West rd Street Orland Park, IL U.S.A. 0 Telephone: 708/9-00 FAX (U.S.A.): Customer Service, hours: North America: U.K.: Europe, Africa & Middle East: AE0B-A0-00 Rev: B