7
MAINTENANCE
The RH Models are relatively maintenance free. Electric motor bearings are
prelubricated and should be lubricated as shown below.
Relubricate Intervals
The following intervals are suggested as a guide.
Hours of Service Per Year
Suggested Relube Interval
5000
Every 5 years
Continuous
Normal Application
Once a year
Continuous
In high ambient, or dirty or moist location; or
where motor is idle for six months or more,
and applications with high vibration or where
shaft end is hot (pumps – fans).
Every 6 months
Lubricant
Use high grade ball bearing grease. Use consistency of grease suitable for class of
insulation stamped on nameplate, as follows:
Insulation
Class
Consistency
Type
Typical Grease
B or F
#3
Lithium Base
Shell Cyprina #3
Procedure
If motor is equipped with Zerk fitting, clean tip of fitting and apply grease gun. Use one
to two full strokes on motors.
CAUTION
Keep grease clean! Do not mix petroleum grease and silicone grease in motor bearings.
The cooling coils may become clogged with leaves, paper, incineration ash or other
airborne dirt. Normal rainfall will generally clean the coil, but if not, clean with compressed air
or if oil is involved in the fouling use steam.