Door-type dishwasher high/low temperature with/without built-in booster (68 pages)
Summary of Contents for Moyer Diebel 501-HT
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Simply Engineered Better Technical Manual Undercounter Dishwasher Model 501-HT 501-HTN 501-LT Machine Serial No. July, 2003 0508576 Manual REV. J P.O. Box 4183 2674 N. Service Road Winston-Salem, North Carolina 27115-4183 Jordan Station, Ontario, Canada L0R 1S0 Moyer Diebel, U.S.
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Complete the information below so it will be available for quick reference. Model Number __________________________ Serial Number ________________________ Voltage and Phase ______________________________________________________________ Moyer Diebel Parts Distributor _______________________________ Phone _____________ (if applicable) _____________________________________________________________________________ Moyer Diebel Service Agency ________________________________ Phone _____________ _____________________________________________________________________________ Moyer Diebel Service: Moyer Diebel Limited Moyer Diebel, US...
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REVISIONS Revision History Revision Revised Serial Number Comments Date Pages Effectivity 12/16/92 — Reissue of manual and new replacement parts lists. 8/29/93 18-19 3100 Redesign of door catch plunger and housing. 8/29/93 20-21 — Redesign of thermometer fitting. 8/29/93 24-25 3210 Redesign of upper wash arm hub and gasket.
INTRODUCTION INTRODUCTION Welcome to Moyer Diebel. Thank you for choosing Moyer Diebel and for allowing us to take care of your dishwashing needs. This manual covers several models. Model numbers are shown on the front cover. Your machine has been completely assembled, inspected, and thoroughly tested at our factory to eliminate problems at installation before it was shipped to your installation site.
WARRANTY LIMITED WARRANTY Moyer Diebel, P.O. Box 4183, Winston-Salem, North Carolina 27115, and P. O. Box 301, 2674 North Service Road, Jordan Station, Ontario, Canada L0R 1S0 warrants machines, and parts, as set out below. Warranty of Machines: Moyer Diebel warrants all new machines of its manufacture bearing the name “Moyer Diebel” and installed within the United States and Canada to be free from defects in material and workmanship for a period of one (1) year after the date of installation or fifteen (15) months after the date of shipment by Moyer Diebel, whichever occurs first.
GENERAL GENERAL This manual covers the Moyer Diebel undercounter dishwashing machine. This machine is fully automatic and is equipped with a 1/2 H.P. pump motor. All models are available for mounting directly to the floor or on optional stands (see accessories listed on page 4). Standard equipment includes: -Automatic tank fill -Upper and lower wash/rinse arms...
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GENERAL Accessories • 17RS - 17" rack stand (raises working height and adds rack storage) • 17T - 17" cabinet (raises working height and adds storage) • CST - Combination sink/table (scraping and sorting station) • 0501653 - Dish Rack (Peg Rack) •...
INSTALLATION INSTALLATION Unpacking WARNING: Care should be taken when lifting the machine to prevent damage. Immediately after unpacking your machine, inspect for any shipping damage. If damage is found, save the packing material and contact the carrier immediately. Remove the dishwasher from the skid. Adjust the feet if required, then move the machine to its permanent location.
INSTALLATION Plumbing Connections CAUTION: Plumbing connections must comply with local sanitary and plumbing codes. Water Connections Connect the hot water supply (60 C/ 140 F Min) to the 1/2" I.D. fill hose. The fill solenoid valve is equipped with a flow control that will accept water pressures from 172 kPa/25 psi to 665 kPa/95 psi.
INSTALLATION Completing Installation Remove any foreign material from inside the machine. Center the scrap screen over the sump opening. Prime the booster using the following procedure (if applicable). CAUTION: To prime the booster, the following procedure must be followed AFTER the electrical and plumbing connections have been made.
OPERATION OPERATION Operation Summary The following is a summary of your Undercounter Dishwashing Machine operating cycle: The cycle begins when you depress the front edge of the door latch toward the door. The green cycle lamp lights and the pump starts. The pump runs during the wash cycle for approximately 80 seconds.
OPERATION NOTE: The machine may be stopped at any time by opening the door. When restarted, the cycle does not start over. It will continue from the point at which it was interrupted. 7. Check the rinse temperature during the final rinse (120 seconds into cycle). The rinse temperature must be 82°C/180°F minimum for models 501HT, 501HTN, 501UT and 501UTLC and 60°C/140°F for models 501LT and 501UTL.
MAINTENANCE MAINTENANCE The efficiency and life of your machine is increased by regularly scheduled preventive maintenance. A well maintained machine gives better results and service. An investment of a few minutes of daily maintenance will be worthwhile. The best maintenance you can provide is to keep your machine clean. Components that are not regularly cleaned and flushed will clog and become inoperative.
MAINTENANCE Deliming Your dishwasher should be delimed regularly as required. This will depend on the mineral content of your water. Inspect your machine interior for lime deposits. If deliming is required, a deliming agent should be used for best results. If you have the chemical sanitizing model (501LT or 501UTL), carefully follow the following procedure before deliming: DANGER:...
MAINTENANCE Maintenance Schedule • As Required Check the temperature gauge reading. Check the chemical supplies and refill as necessary. • Weekly Inspect all water lines for leaks and tighten them at joints if required. Clean all detergent residue from the exterior of the machine. Check the drain for leaks.
TROUBLESHOOTING TROUBLESHOOTING Before determining any specific cause of a breakdown or abnormal operation of your dishwasher, check that: Turn all switches ON, except for the extended wash switch. Wash arms are clean. Scrap screen is properly positioned and clean. Thermostat(s) are at their correct setting. Sanitizer, detergent, and rinse additive dispensers are adequately filled.
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TROUBLESHOOTING TROUBLESHOOTING (con’t) CONDITION CAUSE SOLUTION No water in wash well Opening door prior ......Close door. Wait for green cycle light to cycle completion to go out before opening door. No water in wash tank Door not latched ........Latch door.
REPLACEMENT PARTS 00004 TO RINSE THERMOSTAT (CALLED OUT IN CONTROL BOX) THERMOMETER (CALLED OUT IN CONTROL BOX) TO PUMP DRAIN TO DRAIN Figure 3 — Tank Heat and Drain...
ELECTRICAL SCHEMATICS y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y y yy y yyyyyyyyyyyy Figure 15 - Electrical Diagram, 501-HTN (For machines beginning with S/N 6984)
ELECTRICAL SCHEMATICS y y y y y y y y y y y y y y yy y y y y y y y y y y y y y y y y y y y y y yy Figure 16 - Electrical Diagram, 501-LT (For machines beginning with S/N 6984)
WHITE CAM 5 FILL CAM 6 RINSE GROUND WHTR WATER HEATER CAM 7 DETERGENT GREEN WATER THERMOSTAT CAM 8 CYCLE HLTS HIGH LIMIT THERMOSTAT CYCLE ON LIGHT MAIN SWITCH ON/FILL OFF/DRAIN 0508975/A Figure 17 - Electrical Diagram, 501-HT (50 Hz)
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TANK HEAT THERMOSTAT CAM 5 FILL FILL VALVE WHITE CAM 6 RINSE GROUND WHTR WATER HEATER CAM 7 DETERGENT GREEN CAM 8 AUTO-FILL DRAIN HLTS HIGH LIMIT THERMOSTAT Figure 18 - Electrical Diagram, 501-HT/UT/UTLC (For machines built prior to S/N 6984)
ELECTRICAL SCHEMATICS 00012 CUSTOMER TO SUPPLY RATED TO CUSTOMER RECEPTACLE VOLTAGE/PHASE/Hz, AS SPECIFIED 115V 60Hz PER ORDER, TO DISCONNECT SWITCH. ALL POWER SUPPLIED TO EACH CONNECTION POINT MUST COMPLY WITH ALL LOCAL ELECTRICAL CODES. TTS 10 WHTR CAM 1 BLU START CW START CCW MAIN (IF USED)
ELECTRICAL SCHEMATICS 00013 CUSTOMER TO SUPPLY RATED TO CUSTOMER RECEPTACLE VOLTAGE/PHASE/Hz, AS SPECIFIED 115V 60 Hz PER ORDER, TO DISCONNECT SWITCH. BLK WHT ALL POWER SUPPLIED TO EACH CONNECTION POINT MUST COMPLY WITH ALL LOCAL ELECTRICAL CODES. TTS 10 (IF USED) BLACK CAM 9 AUTO-FILL DRAIN PSDR...
If booster thermostat is calling for heat, cam 9 will pause wash cycle until it reaches 82∞C/180∞F. COM. TIMER SWITCH DETAIL 5 4 3 TIMER MOTOR LOCKING SCREW TIMER ASSEMBLY 501HT Figure 21 - Timer Chart and Diagram, 501-HT (For machine beginning with S/N W7604)
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