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Hatco booster heater typically has 2 sets of thermostats and elements located on each end of heater. Both sides might be controlled by same 60 amp breaker, or the heater might be controlled by two separate 30 amp breakers. Be sure you have correct wire and breaker.
After reading steps on link above, add comment and say if this is new installation, or older installation that suddenly started throwing breaker.
Most of the Hobart LX series of dishwashers have their own built-in booster heaters. To check for one, remove the lower front panel (2 screws). The booster heater, if present, will be a stainless steel tank on the left side. If it doesn't have a built in booster heater then it was meant to be used with chemical sanitizer instead.
make sure all the curtains are there ,also check for any baffles missing from mach. should be 2 1 on incoming side 1 on outgoing, also ck hood vents had problem before with vents wide open sucking heat right out of warewasher
3 Con, is the booster heat contactor. If it is chattering, the fault will be in the booster. There are a few different boosters in the AM14. can you post the ML number from the data plate, or describe if the booster is a square Hatco HCM-10, or a round stainless booster with a 13 kw multi wired element.. All boosters use a low water cut off circuit, a high limit thermostat and a control thermostat. The old Hatcobooster uses mechanicqal components, where the new rount tank uses probes and a control board. The board has 3 leds. red is calling for heat, yellow is open thermistor, and green is shorted thermistor.
AM14's had a variety of different control circuit voltages, ranging from 240/208/120 and 24 volt AC. Check the transformer secondary for correct output to controls, trace through circuit until voltage pulses. If new style, it could be just scaled up probes not reading water. Drain the tank with the power off before removing probes.
Try Rick at Restaurant Parts and More in Ohio. Have model and serial number. He's pretty good at getting stuff like that and he reasonable on prices. I'm in Ga. and I have a 3 day turn around on anything I order from him. He's a straight shooter too. If he can't help you he'll try to find some one who can.
Under normal and regular operation Hatco recommends that the unit be turned on at all times. If the booster heater will not be used for an extended period of time or will be exposed to freezing conditions it should be drained to prevent damage to the unit.
I'm a hobart tech.If the dishwasher is going to be a cold machine you need 140 degrees,if its a hot machine you need 180 which you need a booster.A hatco c-36 will supply the dishwasher with180-190 degrees.Any ? let me know.
The answer to this question will be based on the incoming water temperature that is supplied to the booster heater. The standard sizing for a booster heater is based off of a 40 degree F rise (140 degree F incoming water temperature) or a 70 degree F rise (110 degree F incoming water temperature). For a 40 degree F rise, a Hatco model C-5, S-5, or PMG-60 will supply the needed amount of rinse water for the LX-18 Hobart dishwasher. A 70 degree F rise would require a Hatco model C-9, S-9, or PMG-60 to supply the same Hobart model number.