Inspection and Maintenance Procedures
Inspection and Maintenance
IMP–6
Air Filters (Air Extraction Valve)
Open the filter petcock and drain off all moisture accumulation. If the amount of moisture appears to
be excessive it is suggested that the petcock can be left cracked open for a continuous bleed or the fre-
quency of the blowdown inspection be increased.
The filter should be opened up on a scheduled basis and inspected. Clean the Poro-Stone tube in any oil
solvent and blow out clean and dry. Clean the inside of the filter housing.
HEATING, COOLING AND VENTILATION
Air Conditioners
Clean dust and dirt from the condenser and evaporative coils. Clean condensate drip pan. Wash or re-
place the air filter. Functionally check the operation of the thermostat and air conditioner.
Space Heaters
Check electrical continuity and verify proper operation of the space heaters. Clean dust from the thermo-
stats, heating elements and fan blades. Lubricate the fan motors per the Vendor Supplied Components
Instructions, Volume II.
Accessory and Turbine Compartment Vent Fans
Check fan wheel for buildup of foreign material or excessive wear from abrasion. Both can cause vibra-
tion and create a serious safety hazard. Any buildup of foreign material should be removed. If wheel
shows excessive wear, replace it immediately.
Check all set screws and bolts for tightness, and mounting security. Lubricate fan motors per the Vendor
Supplied Components Instructions, Volume II.
MOTORS
DC Motors
Inspect to see if the brush orientation markings on the side of the brush yoke and bearing bracket are
aligned. If the brushes are not properly orientated, it could affect the speed of the motor and cause exces-
sive sparking. Check the indicator marker on the brush pigtails for evidence of brush wear. If the marker
reaches the top of the brush holder box, the brush is worn to the point where it should be discarded. These
checks can be made after removing the bearing bracket louvered cover.
Also check the commutator at this time for cleanliness and wear. Check the commutator for roughness
while running. This is done by placing a fiber stick against the brushes and feeling to see if it jumps dur-
ing rotation. Check the insulation and windings for contamination, mechanical defects and temperature
defects. Check the insulation integrity for electrical resistance.
Check the vibration of the motor while coupled to the pump. The vibration should not exceed 3 mils
(0.08 m). Check rpm of motor with mechanical or Reed type tach and compare to nameplate.
Содержание MS6001B
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