Trane RAUC-IOM-15, Installation & Maintenance Instructions Manual

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62
Service & Maintenance (Continued)
Fuse Replacement Data
Table 6-2 lists the replacement fuses for the control circuit,
compressors, and condenser fans.
Table 6-2
Fuse Replacement Data
Monthly Maintenance
Before completing the following checks, turn all system con-
trol circuit switches to the “Off” position.
“Open” the main power disconnect switches for the con-
densing unit and all system support equipment. “lock” the
disconnect switches in the “Off” position before removing
any access panels.
H A Z A R D O U S V O LTA G E !
DISCONNECT ALL ELECTRIC POWER INCLUDING
REMOTE DISCONNECTS BEFORE SERVICING.
Failure to disconnect power before servicing can
cause severe personal injury or death.
Air Handling Equipment
[ ] Inspect the return air filters. Clean or replace them if nec-
essary.
[ ] Check the evaporator drain pan and condensate piping
to ensure that there are no blockages.
[ ] Inspect the evaporator coils for dirt. If the coils appear
dirty, clean them according to the instructions described
in the “Coil Cleaning” section.
[ ] Inspect the economizer damper hinges and pins (if appli-
cable) to ensure that all moving parts are securely
mounted. Clean the blades as necessary.
[ ] 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.
[ ] Check the fan shaft bearings for wear. Replace the bear-
ings as necessary.
[ ] Lubricate the supply fan bearings. Refer to the equip-
ment manufacturer for their recommended greases.
Note: Over lubrication can be just as harmful as not
enough grease.
Use a hand grease gun to lubricate these bearings; add
grease until a light bead appears all around the seal. Do
not over lubricate!
After greasing the bearings, check the setscrews to en-
sure that the shaft is held securely to the bearings and
Fan wheels. Make sure that all bearing supports are
tight.
[ ] Check the supply fan belt(s). If the belts are frayed or
worn, replace them.
[ ] Verify that all wire terminal connections are tight.
[ ] Generally inspect the unit for unusual conditions (e.g.,
loose access panels, leaking piping connections, etc.)
[ ] Make sure that all retaining screws are reinstalled in the
unit access panels once these checks are complete.
Condensing Unit
[ ] Manually rotate the condenser fans to ensure free move-
ment and check motor bearings for wear. Verify that all of
the fan mounting hardware is tight.
[ ] Verify that all wire terminal connections are tight.
[ ] Inspect the condenser coils for dirt and foreign debris. If
the coils appear dirty, clean them according to the in-
structions described in the “Coil Cleaning” section.
[ ] Inspect the compressor and condenser fan motor contac-
tors. If the contacts appear severely burned or pitted, re-
place the contactor. Do not clean the contacts.
[ ] Check the compressor oil level. (Compressors “Off”)