Trouble Shooting The Vacuum Hose; Trouble Shooting The Membrane; Trouble Shooting The Vacuum Pump/Controller Module - Maersk Container Industry Star Cool SCI-20 Operating And Service Manual

Vacuum pump
Problem area if reading above 30 mBar

21.3 Trouble shooting the vacuum hose

In case the vacuum hose is defective:
1. Check the hose for leaks. Repair or replace the hose.
2. After repair or replacement of the vacuum hose, see "20.12 Container leak test" p. 87.

21.4 Trouble shooting the membrane

1. Ensure vacuum hose is connected correctly.
2. If this does not solve the problem, replace the membrane.
Please note that this guide only resolves one leak in the system, and may need to be repeated
until all potential leaks are fully terminated.

21.5 Trouble shooting the vacuum pump/controller module

1. Check the contactor coil K9.
2. Measure wiring, see wiring diagram.
3. Ensure vacuum pump is between 60°C and 90°C (140°F and 194°F) and engage contactor K9.
If the pump starts, the controller is faulty.
If the pump does not start, the pump or motor is faulty.
4. Pull the contactor K9 manually. If the pump starts, replace the controller module.
5. Pull the contactor K9 manually. If the pump does not start, replace the pump.
P
Problem area if reading below 30 mBar
CA membrane
Operating and service manual
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