Jackson AJX SERIES, Installation, Operation And Service Manual, Page: 55 / 102

07610-003-60-98-L
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PARTS
HEATER BOX
HEATER PROTECTION AND AUTOMATIC FILL (FOR UNITS EQUIPPED WITH AUTOMATIC FILL)
This control is activated when the power switch is turned “ON.” The primary function is to automatically energize the wash
tank heating circuit. It will also cut-off the wash tank heating circuit should the water be accidentally drained from the
machine with the power switch still “ON.” The power switch should always be turned-off before draining the unit.
This water level control consists of two floats that operate when the power switch is turned "ON" and works in conjunction
with the thermostats and heater relays.
When the power switch is turned “ON,” water starts to enter the dishmachine. When it reaches the proper level, the
normally-open contacts in the water level float switch close, activating the heating circuit for tank heat.
If the water level falls below the correct level while power is still on, the float switch will sense the lack of water and
deactivate the heater.
THERMOSTATS
The thermostat range is from 140 °F to 240 °F with a maximum bulb-exposure temperature of 300 °F.
Calibration:
Wash Thermostat: Setpoint: 165 °F (Adjustable range)
High-Limit Thermostat: Fixed setpoint: 210 °F (Non-adjustable)
The high-limit thermostat is used to protect the heater element in the event of a run-away regulating thermostat or a dry-
fire situation. It is set for 210 °F +0 °F or -10 °F with a fixed setpoint. This part is not adjustable.
The wash tank regulating thermostat will maintain the correct wash water temperature to meet regulatory requirements.
These specify that the wash be no lower than 140 °F on chemical-sanitizing machines and no lower than 160° F on hot-
water-sanitizing machines.