Instruction/ maintenance manual of the product AD-840 American Dryer Corp.
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AD-840 Electrical Troubleshooting Manual 1998 American Dryer Corporation 88 Currant Road Fall River , MA 02720-4781 T elephone: (508) 678-9010 / Fax: (508) 678-9447 E-mail: techsupport@amdry .
Retain This Manual In A Safe Place For Future Reference American Dispensing Company products embody advanced concepts in engineering, design, and safety . If this product is properly maintained, it will provide many years of safe, efficient, and trouble-free operation.
IMPOR T ANT YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC SUPPL Y BEFORE ANY COVERS or GUARDS ARE REMOVED FROM THE MACHINE TO ALLOW ACCESS FOR CLEANING, ADJUSTING, INST ALLA TION, or TESTING OF ANY EQUIPMENT per OSHA (Occupational Safety and Health Administration) ST ANDARDS.
IMPOR T ANT The wiring diagram for the water vending machine is located behind the coin control door . W ater vending machine(s) must not be installed or stored in an area where it will be exposed to water and / or weather .
T able of Contents MICROPROCESSOR F AILURE CODES ....................................................................................... 2 1. Flow Meter ..................................................................................................
2 MICROPROCESSOR F AILURE CODES The microprocessor continually monitors the machine operation. When an error occurs the machine will display a variety of failure codes, which will lead the service technician to the potential problem. The messages displayed do not pinpoint the problem within the wiring of the machine.
3 7. SYSTEM PURGE DO NOT DRINK . .. this message will appear upon turn on of the machine. It is not actually a failure but an installation safeguard. This routine will flush out the preservatives that keep the R.O. Membrane contaminant free during storage.
4 ELECTRICAL PROBLEMS ASSOCIA TED with MICROPROCESSOR F AILURE CODES 1. FLOW METER ERROR The Flow Meter error message could be the result of the following: a . Flow meter failure. 1) Flow meter sensor may need replacement. 2) Flow meter housing may need replacement.
5 NOTE: When a complete flow meter is changed some reprogramming is required. The machine is relying on the information provided by the flow meter for accurate vending. The counts per gallon in the program will have to be changed along with the flow meter .
6 e . Press and hold the [4 GAL.] selection key to activate the vending bay . f . When the gallon has filled completely , release the key . g . Press the [2 GAL.
7 3. FIL TER ERROR The Filter Error message could be a result of the following: a . The sediment and/or carbon filters are in need of replacement; Monitor the pressure gauges while the machine is in operation. Determine which filter has a 10 P .S.I. differential pressure while the R.
8 4. OVERFLOW ERROR A. U.V . Light An Overflow Error triggered by the U.V . Light could be a result of the following: a . The U.V . Light is not plugged in. b . The U.V . Light is defective. c . The alarm connection to the relay board is not plugged in.
9 B. Base Float Switch An Overflow Error triggered by the Base Float Switch could be a result of the following: a . The Base Float Switch has been disconnected. b . The Base Float Switch has been triggered due to water flood in cabinet. c . The Base Float Switch has failed.
10 D. V ending Bay T ank Overflow Switch An Overflow Error triggered by the V ending Bay Overflow Switch could be a result of the following: a . The V ending Bay Overflow Switch is disconnected. b . The V ending Bay Overflow Switch has been triggered due to water not draining out of the tank.
11 5. CHNGER UNPLUG ERROR The CHNGER UNPLUG Error message could be a result of the following: a . Coin changer is unplugged. b . Defective coin changer .
12 6. SYSTEM REFILL PLEASE W AIT The System Refill Please W ait message could be a result of the water level in the containment tank is below the low level switch. If the machine is functioning correctly it should be refilling. The message will automatically reset 1 minute after the water level has reached the low level switch.
13 2. DRAIN PUMP MOTOR An inoperable drain pump could be a result of the following: a . Clogged drain b . Unplugged spill switch c . Incorrect positioning of the spill switch. d . Mechanical malfunction of the drain check valve. When the spill switch is changed it is important that it is positioned correctly .
14 3. 3/4 HP MOTOR An inoperable drain pump could be a result of the following: a . No water supply to machine b . Unplugged or defective low and/or high pressure switches c . Defective inlet solenoid d . Defective relay board e . Defective motor contactor f .
15 ELECTRICAL COMPONENTS LIST ADC Part No. Description 123000 Indicator Light - 1 15 V AC 123005 Indicator Light - 24 V AC 182455 120/240V Primary 24 V AC Secondary 150 V A 132451 Contactor - 24 V AC 133356 Power Cord - 120 V A C 137060 Arc Suppressor (A.
ADC 182731 1 - 02/25/98-25.
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If you already are a holder of American Dryer Corp. AD-840, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime American Dryer Corp. AD-840.
However, one of the most important roles played by the user manual is to help in solving problems with American Dryer Corp. AD-840. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device American Dryer Corp. AD-840 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
