SECTION 22: M
AINTENANCE
133 of 154
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 compatible greases incl
u
de; Tex-
aco 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
fac-
t
u
rer for grease capacity recommendations 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
ctions for l
u
brication, open grease o
u
tlet and p
u
rge the sys-
tem 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 rec-
ommendations on grease compatibility.
Table 39: 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
Summary of Contents for 4044
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