Daikin EUWA/Y5-30HB/C(Z), Service Manual

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ESIE98–06A
Part 5 – Maintenance 5–1
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Part 5
Maintenance
Periodical checks
or actions The following table gives a list of periodical checks and actions in order to execute a good
maintenance.
Inspection checks and actions Remarks
Verify if the cross-fin coil is not blocked. If so, clean
with low pressure tap water. A dirty cross-fin coil results in a capacity
decrease.
Verify the system for tightness. Make sure that all
joints are properly connected. -
Check the function of the flow switch. If the flow switch is not able to operate, the
evaporator can freeze up.
Conduct an inspection to make sure that there is no
air mixed in the water pipes. Even if air is removed at the beginning, air
can sometimes enter later. Therefore,
bleed the system regularly.
Check the tightness of the electrical connections and
the switch box. Bad contact can cause sparks in the
switch box.
Check the operation of all the safety devices. No operation can cause damage of the
unit.
Verify the operation of the crankcase heater. No operation can cause damage of the
compressor when the ambient tempera-
ture reaches a low temperature.
The crankcase heater must always
operate when the compressor is off.
Verify the operation of the heater tape, if installed. No operation can freeze up the evaporator
when the ambient temperature is below
0 °C.
Verify the water filter.