Thermo King SB-III 30 SR+, Manual

Page: 31 / 120

Operating Instructions (Rev. 04/02)
21
5. LOW OIL LEVEL SWITCH. The low oil level switch
closes if the oil drops below a certain level. If it stays
closed for a specified time, the microprocessor will
shut the unit down and record alarm code 66.
6. PREHEAT BUZZER. The preheat buzzer sounds when
the CYCLE-SENTRY system energizes the air heater.
This should warn anyone near the unit that the CYCLE-
SENTRY system is about to start the diesel engine.
UNIT OPERATION
Manual Pretrip Inspection (Before Starting
Unit)
The following Manual Pretrip Inspection should be com-
pleted before starting the unit and loading the trailer. While
the Manual Pretrip Inspection is not a substitute for regu-
larly scheduled maintenance inspections, it is an important
part of the preventive maintenance program designed to
head off operating problems and breakdowns before they
happen.
1. FUEL. The diesel fuel supply must be adequate to
guarantee engine operation to the next check point.
2. ENGINE OIL. The engine oil level should be at the
FULL mark with the dipstick turned (threaded) into oil
pan. Never overfill.
3. COOLANT. The engine coolant must have antifreeze
protection to -30 F (-34 C). Code 37 indicates low cool-
ant. Add coolant in the expansion tank.
CAUTION: Do not remove expansion tank cap
while coolant is hot.
CAUTION: Do not add “RED” Extended Life
Coolants to cooling systems using “GREEN” or
“BLUE-GREEN” coolants. Do not add
“GREEN” or “BLUE-GREEN” coolants to
cooling systems using “RED” Extended Life
Coolants. See “ELC (Extended Life Coolant)”
on page 32 for more information.
4. BATTERY. The terminals must be clean and tight.
5. BELTS. The belts must be in good condition and
adjusted to the proper tensions.
6. ELECTRICAL. The electrical connections should be
securely fastened. The wires and terminals should be
free of corrosion, cracks or moisture.
7. STRUCTURAL. Visually inspect the unit for leaks,
loose or broken parts and other damage. The condenser
and evaporator coils should be clean and free of debris.
Check the defrost drain hoses and fittings to make sure
they are open. Make sure all the doors are latched
securely.
Starting Unit With Electronic Full Pretrip
This procedure is used for a complete checkout of the
trailer, unit, and unit control circuits. It should be used when
first starting the unit for a trip before the cargo is loaded. A
full Pretrip procedure may take up to 30 minutes and the
unit will run unattended.
1. Perform a Pretrip Inspection.
2. Adjust the setpoint to the desired load temperature
(refer to the appropriate Operating Manual or Opera-
tion and Diagnosis Manual for detailed information
about adjusting the setpoint).
a. Change the setpoint display with the arrow keys.
b. Enter the new setpoint by pressing the ENTER key
within 5 seconds.