Hobart ML-110974 Electrical Connections, Dishwasher, Check Rotation Three-Phase Machines Only

ELECTRICAL CONNECTIONS

WARNING: ELECTRICAL AND GROUNDING CONNECTIONS MUST COMPLY WITH THE APPLICABLE PORTIONS OF THE NATIONAL ELECTRICAL CODE AND/OR OTHER LOCAL ELECTRICAL CODES.

WARNING: DISCONNECT ELECTRICAL POWER SUPPLY AND PLACE A TAG AT THE DISCONNECT SWITCH TO INDICATE THAT YOU ARE WORKING ON THE CIRCUIT.

Refer to the wiring diagram attached inside the control box and to the machine data plate for service size requirements when connecting the dishwasher.

NOTE: On models AM14T and AM14TC, the 7/8" plugged holes in the side of the control box are for detergent and chloritizer / rinse feeder connections only. On model AM14F, the holes for the chloritizer / rinse feeder electrical connections are at the rear of the control box, located on top of the machine.

Dishwasher

There is no provision for automatically controlling any other external devices.

The dishwasher electrical service connection can be made through the 11/8" diameter hole for 3/4 inch trade size conduit located at the bottom of the right side of the control box. By removing a knockout, this hole can be enlarged to 13/4" diameter for 1 inch trade size conduit. On model AM14F, the electrical service connection can be made through the same size hole (with knockout for enlargement) located at the rear of the control box on top of the machine.

A fused disconnect switch or circuit breaker (not supplied) must be installed in the electrical service line supplying this dishwasher and should meet the requirements of your local electrical code.

All power supply connections are made at the terminal block 1TB in the control box. The machine must be grounded according to electrical code(s); a grounding lug is provided in the control box.

Check Rotation (Three-Phase Machines Only)

Three-phase motors must rotate in the direction of the arrow on the pump housing. In order to check rotation, observe the motor fan through the vent holes. Close the machine doors and press the power switch to ON. When the machine is completely filled, place the MANUAL/AUTO switch (located on the side of the control box) on MANUAL and place the WASH / RINSE switch (located under the MANUAL/AUTO switch) on WASH. The motor fan must rotate in the direction of the arrow on the pump housing.

If the rotation is incorrect, DISCONNECT ELECTRICAL POWER SUPPLY and interchange any two of the incoming power supply leads. Reconnect the power supply and verify correct rotation.

Electric Booster Water Heater

NOTE: Electric Booster electrical connection is separate from the dishwasher electrical connection.

Before making electrical connection, test the electrical service specifications on the Electric Booster portion of the data plate. attached inside the cover of the control box.

to assure that it agrees with the Also, refer to the wiring diagram

A fused disconnect switch or circuit breaker must be installed in the electrical service line supplying this booster and should meet the requirements of your local electrical code.

The electric booster service connection is made through the 13/4" hole for 1 inch trade size conduit located at the bottom of the control box. On three phase machines, the electrical connection is made to the contactor 3CON in the control box. On single phase machines, the electrical connection is made to the terminal block 4TB in the control box. The machine must be grounded according to electrical code(s); a grounding lug is provided in the control box.

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