SS-SVX11K-EN
119
Maintenance
Monthly Maintenance
Air Handling Equipment
WWAARRNNIINNGG
HHaazzaarrddoouuss VVoollttaaggee!!
FFaaiilluurree ttoo ddiissccoonnnneecctt ppoowweerr bbeeffoorree sseerrvviicciinngg ccoouulldd
rreessuulltt iinn ddeeaatthh oorr sseerriioouuss iinnjjuurryy..
DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmoottee
ddiissccoonnnneeccttss bbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerr
lloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerr
ccaann nnoott bbee iinnaaddvveerrtteennttllyy eenneerrggiizzeedd.. VVeerriiffyy tthhaatt nnoo
ppoowweerr iiss pprreesseenntt wwiitthh aa vvoollttmmeetteerr..
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.
NNOOTTIICCEE
BBeeaarriinngg DDaammaaggee!!
OOvveerr lluubbrriiccaattiioonn ccoouulldd rreessuulltt iinn aass mmuucchh ddaammaaggee
ttoo ffaann bbeeaarriinnggss aass nnoott eennoouugghh ggrreeaassee..
TToo pprreevveenntt ddaammaaggee ttoo ffaann bbeeaarriinnggss,, ddoo nnoott oovveerr
lluubbrriiccaattee..
IImmppoorrttaanntt:: 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
WWAARRNNIINNGG
RRoottaattiinngg CCoommppoonneennttss!!
FFaaiilluurree ttoo ddiissccoonnnneecctt ppoowweerr bbeeffoorree sseerrvviicciinngg ccoouulldd
rreessuulltt iinn rroottaattiinngg ccoommppoonneennttss ccuuttttiinngg aanndd ssllaasshhiinngg
tteecchhnniicciiaann wwhhiicchh ccoouulldd rreessuulltt iinn ddeeaatthh oorr sseerriioouuss
iinnjjuurryy..
DDiissccoonnnneecctt aallll eelleeccttrriicc ppoowweerr,, iinncclluuddiinngg rreemmoottee
ddiissccoonnnneeccttss bbeeffoorree sseerrvviicciinngg.. FFoollllooww pprrooppeerr
lloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo eennssuurree tthhee ppoowweerr
ccaann nnoott bbee iinnaaddvveerrtteennttllyy eenneerrggiizzeedd..
• 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")
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