54
CLCH-SVX009A-EN
Routine Maintenance
WARNING
Hazardous Service Procedures!
The maintenance and troubleshooting procedures
recommended in this manual could result in exposure
to electrical, mechanical or other potential safety
hazards. Always refer to the safety warnings provided
throughout this manual concerning these procedures.
Unless specified otherwise, disconnect all electrical
power including remote disconnect and discharge all
energy storing devices such as capacitors before
servicing. Follow proper lockout/tagout procedures to
ensure the power can not be inadvertently energized.
When necessary to work with live electrical
components, have a qualified licensed electrician or
other individual who has been trained in handling live
electrical components perform these tasks. Failure to
follow all of the recommended safety warnings
provided, could result in death or serious injury.
WARNING
Rotating Components!
The following procedure involves working with
rotating components. Disconnect all electric power,
including remote disconnects before servicing. Follow
proper lockout/ tagout procedures to ensure the power
can not be inadvertently energized. Secure rotor to
ensure rotor cannot freewheel. Failure to secure rotor
or disconnect power before servicing could result in
rotating components cutting and slashing technician
which could result in death or serious injury.
Maintenance Checklist
Table 17.
Maintenance Checklist
After 48 hours of operation
For belt-drive fans, the belts have acquired their permanent set. Readjust but do not overtighten. See
“Tension the Fan Belt,” page 51
for more
information.
Every week
Observe unit weekly for any change in running condition and unusual noise.
Every month
Clean or replace air filters if clogged or dirty; coat permanent filters with oil after cleaning; change bag filters when pressure drop is 1 in. wg.
See
“Air Filters” on page 55
for more information.
Belt-drive fans - relubricate fan bearings if necessary. See
“Fan Bearing Lubrication” on page 61
for more information.
Belt-drive fans - check and adjust fan belt tension.See
“Tension the Fan Belt,” page 51
for more information.
Every three to six months
Belt-drive fans - check fan bearing grease line connections. Lines should be tight to the bearings.
Check motor bracket torque. See
Table 18, page 61
for torque requirements.
Belt-drive fans - check bearing bolt torque and bearing setscrew torque. See
Table 18, page 61
for torque requirements.
Belt-drive fans - align fan and motor sheaves. Tighten sheave set screws to the proper torque. See
“Align Fan and Motor Sheaves,” page 53
for more information.
Inspect and clean drain pans. See
“Coils” on page 55
for more information.
Tighten electrical connections.
Inspect coils for dirt build-up. See
“Coils” on page 55
for more information.
Every year
Inspect the unit casing for corrosion. If damage is found, clean and repaint.
Clean the fan wheels and shaft. See
“Coils” on page 55
for more information.
Inspect and clean drain pans.
Check damper linkages, set screws, and blade adjustment. Clean, but do not lubricate, the nylon damper rod bushings.
Clean damper operators.
Inspect electrical components and insulation.
Inspect wiring for damage.
Rotate the fan wheel and check for obstructions. The wheel should not rub. Adjust the center if necessary.
Lubricate motor bearings in accordance with motor manufacturer’s recommendations (see
“Motor Bearing Lubrication” on page 61
for more
information).
Check condition of gasketing and insulation around unit, door and dampers.
Examine flex connections for cracks or leaks. Repair or replace damaged material.
