TK 61651-18-OP-EN
53
Inspection and Service Intervals
Weekly Pre-Trip Checks
1. Visually inspect belt.
2. Listen for unusual noises, vibrations, etc.
3. Visually inspect unit for fluid leaks (coolant, oil, refrigerant).
4. Visually inspect unit for damaged, loose or broken parts (including air
ducts and bulkheads, if so equipped).
5. In the event of excess of dirt or obstruction clean the unit, including
condenser and evaporator coils.
Weekly Pretrip Inspection
The following Weekly Pretrip Inspection should be completed before starting
the unit and loading the truck. While the weekly inspection in not a substitute
for regularly scheduled maintenance inspections, it is important part of the
preventive maintenance program designed to head off operating problems
before they happen.
LLeeaakkss:: Inspect for refrigerant leaks and worn refrigerant lines.
BBaatttteerryy:: Terminals should be properly tightened and show no signs of
corrosion.
BBeellttss:: Inspect for cracks, wear, and proper belt tension.
MMoouunnttiinngg BBoollttss:: Verify bolts are properly tightened.
EElleeccttrriiccaall:: Electrical connections should be securely fastened. Wires and
terminals should be free of corrosion, cracks, or moisture.
SSttrruuccttuurraall:: Visually check for physical damage.
CCooiillss:: The condenser and evaporator coils (evaporator coils in bi-
temperature units) should be clean and free of debris.
• Washing with clean water should be sufficient. The use of cleaning
agents or detergents is strongly discouraged due to the possibility of
degradation of the construction. If using a power washer, the nozzle
pressure should not exceed 600 psi (41 bar). For the best results, spray
the coil perpendicular to the face of the coil. The spray nozzle should be
kept between 1 inch and 3 inches (25 to 75 millimetres) from the coil
surface. If necessary to use a chemical cleaner or detergent use a cleaner
that does not contain any hydrofluoric acids and is between 7 and 8 on
the pH scale. Ensure dilution instructions provided by the detergent
supplier are followed. In case of doubt about the compatibility of the
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