Installation, Operation & Maintenance Manual
IM-875
15
Maintenance
(refer to safety section)
All heating equipment should be serviced before each heating
season to ensure proper operation. The following items may
be required to have a more frequent service schedule based
on the environment in which the unit is installed and how
long the equipment is operated.
Motor Assembly
Check the motor sheave set screws and the motor slide base
bolts for tightness upon initial start-up and before each heating season. The motor bearings are pre-lubricated at the factory for
initial operation but should be relubricated (when provided with grease fittings) at six (6) month intervals. The recommended
lubricants are Shell Oil Company's "Dolium R", Chevron Oil's "SRI No. 2" or Texaco's "Premium RB" lubricant. When lubricating,
consider the following:
1. Clean the grease fitting and then apply the grease with a proper grease gun. Keep grease clean.
2. Use two full strokes for each bearing. Do not over lubricate.
3. Do not mix petroleum grease with silicone.
4. Lubricate motors at standstill.
Blower
After initial start-up, check the tightness of the fan sheave, fan hub set screws, fan bearing collar set screws and fan bearing
mounting bolts. Also check when retensioning the v-belts, when relubricating the fan bearings and before each heating season.
AEH Series Model Heaters:
All AEH Series fan bearings should be lubricated after the first one hundred (100) hours of operation
and relubricated on a monthly basis thereafter. Aerovent recommends the use of the following (or equivalent) grease:
MOBIL SHC460 – Clean the grease fitting and then apply the grease with a proper grease gun. Inject enough grease until a small
amount shows between the seal and the bearing race. Examine the blower impeller at six (6) month intervals for accumulation
of dust and dirt on the fan blades. Any build-up must be cleaned off to maintain performance. If the accumulation is heavy, more
frequent cleaning may be required.
Belts
Due to belt stretching, adjust belt tension after the first one hundred (100) hours of operation. Check belts every three (3) months
thereafter for proper tension. Do not over tighten. Adjustment should result in a belt deflection of 3/4" to 1" for each foot of span
when applying medium thumb pressure inward at the center of the span.
Filters
Inspect monthly until an appropriate schedule can be established, based on need. Replace or clean as necessary.
Coils
Inspect and clean the coil fins on the entering air side annually. If these inspections indicate that more frequent cleaning is
required, establish a cleaning schedule accordingly. Fins should be cleaned by brushing and/or back-washing with high pressure
air or water. In extreme cases the coils may have to be removed and cleaned with high pressure steam or washed with a mild
alkali solution followed by a water rinse.
When using a drill bit to clean the burner gas ports, do not
distort or enlarge the ports. Use a pin vise not a power drill.
CAUTION
1. Electric shock hazard. Could cause severe injury or death. Failure to bond the frame of this equipment to the building electrical ground
by use of the grounding terminal provided or other acceptable means may result in electrical shock. Disconnect electric power before
servicing equipment. Service to be performed only by qualified personnel. Make sure power is turned off and locked in the OFF
position.
2. If equipped with the factory installed disconnect switch option, when the switch is in the "OFF" position, supply power remains energized
at the supply power terminal strip and the top of the disconnect switch. When providing service on or near these terminals, building
supply power to the unit should be de-energized.
3. Opening access doors on this equipment may expose user to MOVING PARTS. Your Lock-Out-Tag-Out procedures should be followed
when servicing this equipment.
WARNING
NOTICE
Service and maintenance procedures should be performed by a
qualified service agency.
