Table of Contents
Advertisement
Service and Maintenance
Monthly Maintenance
WARNING
Hazardous Voltage w/Capacitors!
Failure to disconnect power and discharge capacitors
before servicing could result in death or serious
injury.
Disconnect all electric power, including remote
disconnects and discharge all motor start/run
capacitors before servicing. Follow proper lockout/
tagout procedures to ensure the power cannot be
inadvertently energized. For variable frequency drives
or other energy storing components provided by
Trane or others, refer to the appropriate
manufacturer's literature for allowable waiting periods
for discharge of capacitors. Verify with a CAT III or IV
voltmeter rated per NFPA 70E that all capacitors have
discharged.
Before completing the following checks, turn the unit OFF
and lock the main power disconnect switch open.
Filters
Inspect the return air filters. Clean or replace them if
necessary. Refer to the Service and Maintenance chapter
for filter information.
Cooling Season
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Verify that no power is
present with a voltmeter.
☐ Check the unit's drain pans and condensate piping to
ensure that there are no blockages.
☐ Check that the condensate overflow switch float moves
freely.
☐ Inspect the evaporator and condenser coils for dirt,
bent fins, etc. If the coils appear dirty, clean them
according to the instructions described in "Coil
Cleaning" later in this section.
☐ Inspect the economizer outside air and return air
damper hinges and pins to ensure that all moving parts
are securely mounted. Keep the blades clean as
necessary.
108
WARNING
Rotating Components!
Failure to disconnect power before servicing
could result in rotating components cutting and
slashing technician which could result in death or
serious injury.
During installation, testing, servicing and
troubleshooting of this product it may be
necessary to work with live and exposed rotating
components. Have a qualified or licensed service
individual who has been properly trained in
handling exposed rotating components, perform
these tasks.
☐ Manually rotate the condenser fans to ensure free
movement and check motor bearings for wear. Verify
that all of the fan mounting hardware is tight.
☐ Check that all compressor crankcase heaters are
working. Repair any that are not working and wait 8
hours before starting the associated refrigeration
circuit.
☐ Verify that all damper linkages move freely; lubricate
with white grease, if necessary.
☐ Check supply fan motor bearings; repair or replace the
motor as necessary.
☐ With the unit running, check and record the following:
–
ambient temperature
–
compressor oil level (each circuit)
–
compressor suction and discharge pressures (each
circuit)
–
superheat and subcooling (each circuit)
Record this data on an "operator's maintenance log" like
the one shown in
, p.
132. If the operating pressures
indicate a refrigerant shortage, measure the system
superheat and system subcooling. For guidelines, refer to .
Important: Do not release refrigerant to the atmosphere! If
adding or removing refrigerant is required, the
service technician must comply with all
federal, state and local laws. Refer to general
service bulletin MSCU-SB-1 (latest edition).
Heating Season
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Verify that no power is
present with a voltmeter.
Before completing the following checks, turn the unit OFF
and lock the main power disconnect switch open.
RT-SVX063G-EN
Advertisement
Table of Contents
