Trane CXPA, Установка, эксплуатация и обслуживание

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Preventive Maintenance
Periodical Preventive
Maintenance
Record operation conditions for this unit
monthly. The operation datasheet can
be a precious diagnostic tool for service
personnel.
By noticing trends in
operating conditions the operator can
often anticipate and prevent problem
situations before they become serious.
If the unit is not operating properly, refer
to the section on abnormal conditions
at the end of this manual.
Weekly Maintenance
When the equipment is operating for
approx. 30 minutes and the system is
stable, check the operating conditions
and perform the following checking
procedures:
Clean permanent air filters more
often, depending on the job site.
Monthly Maintenance
Clean the permanent air filter.
Throwaway filters should be replaced.
Check fan belt tension,
alignment and condition.
Clean the fan volute.
Re-tighten all terminal screws.
Clean the evaporator tray, the
hose and the condensate water drain.
Check the liquid line sight glass.
Leak-test and repair, if required.
When the liquid sight glass and
the operational conditions indicate lack
of
gas, measure the system
overheating and subcooling.
When operational conditions
indicate overload, remove the
refrigerant slowly (to minimize oil
losses) through the Schrader service
valve in the liquid line.
Inspect the system to detect
abnormal conditions. Use a reading
sheet to record unit conditions. A
reading sheet completed can be a
precious tool for service personnel.
Quarterly Maintenance
Perform all monthly
maintenance tasks.
Check bearing and shave fixing
screws and adjust then, if required.
Clean the condenser more
often, depending on the job site.
Clean the evaporator more
often, depending on the job site.
Check and write down fan motor
and compressor operation voltages
and currents.
Test safety controls.
Check
and write down
evaporator entering and leaving dry
bulb and wet bulb temperatures.
Check suction and discharge
pressures with the manifold.
Measure and record the system
overheating.
Measure and record the system
subcooling.
Annual Maintenance
Perform all recommended
monthly and quarterly maintenance
tasks.
Have a qualified technician to
check the adjustment and operation of
each control, and inspect and replace
counters or controls, if required.
Remove the cabinet panels and
remove rust spots.
Replace the thermal insulation
and defective gaskets.
Repair the external and internal
painting, if required.
Remove rust.
Inspect
and clean the
condenser pipes, if required.
Inspect the expansion valve
bulb. Clean it, if required. The contact
between the bulb and the suction line
should be excellent, and the bulb
should the properly insulated.
Measure the electrical insulation
of the compressor motor.
IMPORTANT
Failure to perform preventive
maintenance tasks in the equipment
may lead to impaired performance and
even void the equipment warranty.
IMPORTANT
Perform all inspections and maintenance
services at the recommended intervals.
This will increase equipment life and
reduce possible equipment failures.