Thermo King SLXe SPECTRUM, Manual

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13
CARE AND MAINTENANCE
ENROUTE INSPECTIONS
1. Carry out an inspection every four hours of operation.
2. Note controller setpoint to ensure setting is unaltered since picking up the load.
3. Note the return air temperature, it should be +/- 4°C of the controller setpoint.
If the temperature reading is not +/- 4°C of the controller setpoint, keep the unit running for 15 minutes and re-check the temperature. Wait 15
minutes more and if the temperature is still out of range, contact a Thermo King dealer for service.
4. We recommend you record the return air temperature reading each time you check the unit. This is important information if you need service later
on.
Notes: If cargo temperature is too high it could indicate:
• Evaporator is plugged with frost in which case standard defrosting procedure is needed or there is improper air circulation within the cargo area.
Inspect the unit to determine if the evaporator fan is working and circulating the usual amount of air. Poor circulation could be caused by:
– Fan belt slipping or damaged. (Have the fan belt checked by a qualified mechanic.)
– Defrost damper Door damaged and stuck in closed position.
– Improper loading of product in trailer or load shifting in transit so that there are restricted air passages around and through the load.
– Unit may have a low refrigerant charge. If you cannot see a liquid level in receiver tank sight glass with the unit running in COOL, it is an
indication that the charge may be low.
It is advisable that any of the above mentioned problems found during your enroute inspection be referred to the nearest authorized Thermo King
dealer as quickly as possible. Check your service directory for phone number and location.