American Dish Service HT-25 Service Manual
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American Dish Service HT-25 Service Manual

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Summary of Contents for American Dish Service HT-25

  • Page 2 IMPORTANT: American Dish Service provides this information as a service to our customers. Keep all instructions for future reference. Although ADS will make every effort to make sure the information in this service manual is correct and up-to-date, ADS does not certify that this is the case, and should you decide to utilize this manual, you do so at your own risk.

  • Page 3: Table Of Contents

    Wire Diagram, 3 Phase Timer Modification Kit #388-1007 Wire Diagram, 1 Phase Ladder Diagram, HT-25 (including all options of 2005) Ladder Diagram, HT-25 (original 1995 wiring) Ladder Diagram, HT-34/25 (including all options of 2005) Layout, 3 Phase Layout, 1 Phase...
  • Page 4 NSF DATA PLATE NSF Operational Requirements for MODEL HT-25, Hot water sanitizing, single rack dishmachine as manufactured by AMERICAN DISH SERVICE Wash tank minimum temperature: 160° F Final sanitizing rinse minimum temperature: 180° F Final rinse minimum pressure: 20 psi...

  • Page 5: Plumbing

    Place the dishmachine in the desired position, then level the unit by adjusting the bullet feet in each leg. The HT-25 can be used in either corner or inline arrangements. IMPORTANT. Do not run this machine with the spray arm installed for the fi rst two cycles following the installa- tion.

  • Page 6: Electrical

    [ This information is critical but is often overlooked ] The drain on the HT-25 is made from two inch (2”) copper pipe, the manifold is attached by “no- hub” plumbing connections to the tank and scrap box drains. The machine is normally shipped with the scrap-box installed on the machine’s right-hand side.

  • Page 7: Dispensers

    Wire size is important to electrical component life, undersized wire will result in premature failure of contactors and motors. We do not recommend using power from the HT-25 control box to supply power for controls or devices such as exhaust fans.

  • Page 8: Operation

    cap and running water through the arm. The bearing can be disassembled for cleaning with a screwdriver, should the need arise. It is not anticipated that disassembly would be required; each time the machine goes into fi nal rinse, a jet of water cleans out the bearing shell.
  • Page 9 PUT THE SPRAY ARMS IN UNTIL THE MACHINE HAS RUN SEVERAL CYCLES. Now, fi ll the machine by turning on the master switch. The HT-25 will automatically fi ll with water to an operational level. After the pump motor starts, the machine will fi ll once more to compensate for the water used by the pump.
  • Page 10 the cam timer. Everything is keyed off the master cam. The fi rst cam is the master and it begins the cycle by sending power to the timer motor. The second cam immediately turns on the contac- tor for the wash motor. The third cam will turn on the fi nal rinse solenoid. The fourth cam switch is a spare.

  • Page 11: Motor Replacement

    3HP MOTOR REPLACEMENT SEAL REPLACEMENT PROCEDURE 1 TURN OFF POWER TO THE MACHINE. Empty water from the wash tank and open pet- cock on wash pump motor. 2 Remove the two mounting bolts that secure motor to frame. Take out the (4) four 3/8” bolts that hold rear pump housing to the front pump cover. 3 Slide motor and rear pump housing out of the pump cover.

  • Page 12: Hi Temp Design

    Heat Unit Equivalent (H.U.E.) tests required for NSF certifi cation. The HT-25 supports both methods of sanitizing, NSF lists the HT-25 as a dual sanitizer. This means the machine’s design can serve in both roles. The fi nal rinse system delivers high temper- ature sanitizing or chemical sanitizing sprays with the same water consumption rates.

  • Page 13: Preventive Maintenance

    Third, installation problems are the # 1 cause of service disruptions. If the machine is im- properly installed no amount of tuning or adjustment can compensate for the lack of essen- tial elements. The installer must return and correct the omitted elements of the installation. HT-25 Preventive Maintenance Schedule Three General areas must be inspected...
  • Page 14 WATER CONTROL MECHANISM 1) Check for free movement of suspended rod and weight 2) Suspended weight is free moving and clear 3) Lever is free moving and has 1/16” clearance from box or attaching locknut. Operate the lever 10 or 20 times with the tank full of water, it should not stick on “fi ll.” If it does stick, the problem will be interference with the rod, weight, or the switch button spring may be too weak.

  • Page 15: Cleaning Process

    In addition, American Dish Service will exchange any part covered under this limited warranty which is found defective, as determined by American Dish Service, under normal use and service up to two hundred and seventy (270) days following the fi rst ninety (90) day limited warranty period as described above, excluding feed line, fl...
  • Page 17 WATER CONTROL MECH. 1. Free moving flipper and rod 2. 1/16” clearance on holddown nut (flipper) 3. Wires are clear of mech. 4. Rod has no interference with tube or box 5. Armor tube is seated in the upper socket 6.
  • Page 34 Booster Heater Specifications Model 40F Rise 70F Rise Ship. Wt. ADS Stock Amp/208/3ph Amp/208/1ph Amp/240/3ph Amp/240/1ph 6 kW 60 gph 34 gph 118 lbs. stock 40a, 8AWG 40a, 8AWG 30a, 10AWG 40a, 8AWG C-12 12 kW 120 gph 69 gph 120 lbs.
  • Page 36 NOTES:...
  • Page 37 American Dish Service Manufacturer of low and high temperature Commercial Dishwashers and Glasswashers 900 Blake Street Edwardsville, Kansas 66111 Ph:(913) 422-3700 Fax:(913) 422-6630...

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