Table of Contents
Advertisement
Motors
Inspection:
1.
Inspect motor every 3 months or 500 hours of operation, which ever occurs first. Keep
the motor clean and vent openings clear.
Lubrication:
1.
Motors with grease fittings must be lubricated based on the table below.
Table 39: Motor Lubrication Intervals
2. A high grade ball or roller bearing grease must be used. Recommended grease for
standard service is Polyrex EM (Exxon Mobil). Other compatible greases include; Tex-
aco Polystar, Rykon Premium #2, Pennzoil Pen 2 Lube and Chevron SRI.
3. Motors without grease fittings are sealed for life and do not require re-lubrication.
Instructions for Lubricating
Before greasing, be sure fittings are clean and free from dirt. Remove grease relief plug or
plate and, using a low-pressure grease gun, pump in the required grease. Do not over-
grease. Overgreasing will reduce the service life of the motor. Consult the motor manufac-
turer for grease capacity recommendations as capacities vary by motor. Relubrication inter-
vals are specified in the table above. After relubricating, allow motor to run for 10 minutes
before replacing relief hardware.
NOTE: In general it is not recommended to mix greases of different brands. The mixing of
different types of thickeners may destroy the composition and physical properties of the
grease. In the event that a different grease is required by the end user, the following steps
can be taken. Using the instructions for lubrication, open grease outlet and purge the sys-
tem as much as possible of the old or unwanted grease. Repeat this same operation after 1
week of service. Consult Rapid Engineering LLC or the motor manufacturer for further rec-
ommendations on grease compatibility.
NEMA Frame Size (Motor HP)
Up to 210 incl. (3 - 5 HP)
Over 210 to 280 incl. (7.5 - 20 HP)
Over 280 to 360 incl. (25 - 30 HP)
NOTE: These intervals are based on severe duty. Over
lubricating bearings could result in reduced motor life
Rated at 1800 RPM
6,000 hrs
4,750 hrs
3,700 hrs
.
SECTION 22: M
AINTENANCE
133 of 154
Advertisement
Table of Contents
