SmartROC D65 Tier 4 Final 2 General
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Changing the main filter:
n Undo the screws around the cover (C).
n Open the cover and lift out the filter.
n Fit the new filter in place and screw back the cover.
Changing the prefilter:
n Undo the screws on the louvre cover (D).
n Lift away the louvre cover and the filter.
n Fit the new filter in place and screw back the louvre cover.
Changing the circulation filters:
n Undo the screws on the covers (b).
n Lift away the covers and the filters.
n Fit the new filters in place and screw back the covers.
2.4.4 Diagnostics
No cooling
Check the following points:
n Fuses, electric connections, compressor ground, electromagnets, switches and pres-
sure switches
n V-belt and compressor
n Expansion valve and temperature control valve
n Coolant hoses
Poor cooling
Check the following points:
n Fresh-air fan and V-belt tension
n That the air does not evade the evaporator in the unit
n That the evaporator and condenser are not clogged by rubbish and the filter in the air
intake is not dirty
n That the expansion valve capillary tube is firmly against the evaporator outlet pipe
n That the thermostat does not cut out too early
Uneven cooling
Check the following points:
n That connections to circuit breaker, magnetic coupling or pressure switch are not loose
n That the expansion valve is not clogged
n That the system is filled and the thermostat is not defective
Abnormal noise
Check the following points:
n That the multi-V-belt to the compressor is thoroughly tightened and that the com-
pressor retaining bolts are tightened.
n That the system is filled sufficiently and not overfull
n That the expansion valve is in working order
n That the airflow across the evaporator is sufficient
n That the condenser is clean and the airflow is sufficient
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