Trane RAUJ-C20, Installation, Operation And Maintenance Manual

Page: 119 / 132

SS-SVX11K-EN 119
Maintenance
Monthly Maintenance
Air Handling Equipment
W WA AR RN NIIN NG G
H Ha azza arrd do ou uss V Vo olltta ag ge e!!
F Fa aiillu urre e tto o d diisscco on nn ne ecctt p po ow we err b be effo orre e sse errv viicciin ng g cco ou ulld d
rre essu ulltt iin n d de ea atth h o orr sse erriio ou uss iin njju urry y..
D Diisscco on nn ne ecctt a allll e elle eccttrriicc p po ow we err,, iin nccllu ud diin ng g rre em mo otte e
d diisscco on nn ne eccttss b be effo orre e sse errv viicciin ng g.. F Fo ollllo ow w p prro op pe err
llo occkko ou utt//tta ag go ou utt p prro occe ed du urre ess tto o e en nssu urre e tth he e p po ow we err
cca an n n no ott b be e iin na ad dv ve errtte en nttlly y e en ne errg giizze ed d.. V Ve erriiffy y tth ha att n no o
p po ow we err iiss p prre esse en ntt w wiitth h a a v vo ollttm me ette err..
Before completing the following checks, turn the
system control circuit switch 1S2 and 5S1 to the "Off"
position. Open the main power disconnect switch for
the Condensing Unit and Air Handling Unit and "lock it"
in the "Off" position before removing any access
panels.
• Inspect the return air filters. Clean or replace them if
necessary.
• 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
““Coil Cleaning,”
p. 56,” p. 120 .
• Inspect the economizer damper hinges and pins (if
applicable) 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
bearings as necessary.
• Lubricate supply fan bearings. Contact equipment
manufacturer for recommended greases.
N NO OT TIIC CE E
B Be ea arriin ng g D Da am ma ag ge e!!
O Ov ve err llu ub brriicca attiio on n cco ou ulld d rre essu ulltt iin n a ass m mu ucch h d da am ma ag ge e
tto o ffa an n b be ea arriin ng gss a ass n no ott e en no ou ug gh h g grre ea asse e..
T To o p prre ev ve en ntt d da am ma ag ge e tto o ffa an n b be ea arriin ng gss,, d do o n no ott o ov ve err
llu ub brriicca atte e..
IIm mp po orrtta an ntt:: Use a hand grease gun to lubricate
bearings. Add grease until a light bead
appears all around the seal.
After greasing the bearings, check the
setscrews to ensure 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.
• Inspect unit for unusual conditions (e.g., loose
access panels, leaking piping connections, etc.)
• When checks are complete, verify all retaining
screws are reinstalled in unit access panels.
Condensing Unit
W WA AR RN NIIN NG G
R Ro otta attiin ng g C Co om mp po on ne en nttss!!
F Fa aiillu urre e tto o d diisscco on nn ne ecctt p po ow we err b be effo orre e sse errv viicciin ng g cco ou ulld d
rre essu ulltt iin n rro otta attiin ng g cco om mp po on ne en nttss ccu uttttiin ng g a an nd d sslla assh hiin ng g
tte ecch hn niicciia an n w wh hiicch h cco ou ulld d rre essu ulltt iin n d de ea atth h o orr sse erriio ou uss
iin njju urry y..
D Diisscco on nn ne ecctt a allll e elle eccttrriicc p po ow we err,, iin nccllu ud diin ng g rre em mo otte e
d diisscco on nn ne eccttss b be effo orre e sse errv viicciin ng g.. F Fo ollllo ow w p prro op pe err
llo occkko ou utt//tta ag go ou utt p prro occe ed du urre ess tto o e en nssu urre e tth he e p po ow we err
cca an n n no ott b be e iin na ad dv ve errtte en nttlly y e en ne errg giizze ed d..
• 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.
• 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 instructions described in Coil
Cleaning section.
• Inspect the compressor and condenser fan motor
contactors. If the contacts appear severely burned
or pitted, replace the contactor. Do not clean the
contacts.
• Check the compressor oil level. (Compressors "Off")