Thermo King SB-210, Manual

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Unit Description
28
Normally, longer defrost timer intervals are used
for colder loads. The defrost interval may need to
be changed if the unit will not hold the
compartment temperature at setpoint.
Use a longer defrost interval if defrost is not being
initiated on demand.
Use a shorter defrost interval if defrost is
frequently being initiated on demand.
If the unit is in CYCLE-SENTRY Null mode, the
engine will start when defrost is initiated. The unit
will stay in defrost until the evaporator coil
temperature rises to 58 F (14 C).
Engine Compartment
Components
The following maintenance items can be checked
visually.
Air Filter Restriction Indicator:
The air filter
restriction indicator is attached to the engine
intake manifold. When the diaphragm indicates
25, service the air filter. Press the button on the
bottom of the restriction indicator to reset after
servicing the air cleaner.
Compressor Oil Sight Glass:
Use this sight glass
to check the compressor oil level. See the
Refrigeration Maintenance Chapter for the correct
procedure.
Engine Oil Dipstick:
Use the engine oil dipstick to
check the engine oil level.
Receiver Tank Sight Glass:
Use this sight glass to
check the level of refrigerant in the receiver tank.
See the Refrigeration Maintenance Chapter for the
correct procedure.
CAUTION: Make sure the engine is
turned off before attempting to check the
engine oil.
9
2
3
4
5
7
8
11
10
12
13
14
15
16
17
AJA1921
6
1
1. Air Cleaner Indicator 10. Three-Way Valve
2. Suction Service Valve 11. Filter Drier
3. Discharge Service Valve 12. Receiver Tank Sight Glass
4. Engine Starter Motor 13. Throttle Solenoid
5. Engine RPM Sensor 14. Hand Primer Pump
6. Compressor Sight Glass 15. Low Engine Oil Pressure Switch
7. Compressor Oil Filter 16. Engine Oil Dipstick
8. Engine Oil Filter 17. Battery Tray
9. Alternator
Figure 2: Engine Compartment Components