Alliance Laundry Systems BU170S Service Manual download pdf (Page 70)

70422201R1

On Premise Micro Control (RM) Troubleshooting

41.Motor Will Not Start/Run

Motor Will Not

Start/Run

Is there

voltage between

H2-7 and H3-4?

Is there

24 VAC across

the coil of the motor

control relay?

Yes

Replace

control.

Correct wiring

to coil of

motor relay .

TMB2370S

Yes

Gas and steam heat.

Three phase power supply.

(1)

(2)

Note: For high voltage three

phase supply (200 volts or

higher), the motor is

supplied by L1, L2,

L3 through the motor

contactor terminals T1,

T2, T3. Make the appropriate

adjustments when doing

voltage checks.

Is there

supply voltage

between L1-L2, L2-L3

and L1-L3

of motor?

Replace

motor.

Correct wiring

between motor

and motor

contactor.

Yes

(5)

Is there

supply voltage

at L1-L2, L2-L3 and

L1-L3 at the motor

contactor?

(3)

Correct wiring

between L1, L2,

L3 and power

supply.

Is there

supply voltage

across T1-T2, T2-T3

and T1-T3 on the

motor contactor?

Yes

Replace motor

control relay.

(4)

Yes

Note: Test conducted with vend

price satisfied and start button

pressed.

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Alliance Laundry Systems BU170S Service Manual Page 70

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