Rapid 2005, Installation, Operation & Service Manual

Page: 137 / 162

SECTION 20: M
AINTENANCE
127 of 147
Motors Inspection:
1. Inspect motor e v ery 3 months or 500 ho u rs of operation, w hich e v er
occ u rs first. Keep the motor clean and v ent openings clear.
Lubrication:
1. Motors w ith grease fittings m u st be l u bricated based on the table belo w .
2. A high grade ball or roller bearing grease m u st be u sed. Recommended
grease for standard ser v ice is Polyrex EM (Exxon Mobil). Other com-
patible greases incl u de; Texaco Polystar, Rykon Premi u m #2, Pennzoil
Pen 2 L u be and Che v ron SRI.
3. Motors w itho u t grease fittings are sealed for life and do not req u ire re-
l u brication.
Instructions for Lubricatin g
Before greasing, be s u re fittings are clean and free from dirt. Remo v e grease
relief pl u g or plate and, u sing a lo w -press u re grease g u n, p u mp in the
req u ired grease. Do not o v er-grease. O v ergreasing w ill red u ce the ser v ice life
of the motor. Cons u lt the motor man u fact u rer for grease capacity recommen-
dations as capacities v ary by motor. Rel u brication inter v als are specified in
the table abo v e. After rel u bricating, allo w motor to r u n for 10 min u tes before
replacing relief hard w are.
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 e
v ent that a different grease is
req u ired by the end u ser, the follo w ing steps can be taken. Using the instr u c-
tions for l u brication, open grease o u tlet and p u rge the system as m u ch as
possible of the old or u n w anted grease. Repeat this same operation after 1
w eek of ser v ice. Cons u lt Rapid Engineering LLC or the motor man u fact u rer
for f u rther recommendations on grease compatibility.
Table 25: Motor Lubrication Intervals
NOTE: These intervals are based on severe duty. Over
lubricating bearings could result in reduced motor life
.
NEMA Frame Size (Motor HP) Rated at 1800 RPM
Up to 210 incl. (3 - 5 HP) 6,000 hrs
O v er 210 to 280 incl. (7.5 - 20 HP) 4,750 hrs
O v er 280 to 360 incl. (25 - 30 HP) 3,700 hrs