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© 2007 Simplex, Inc. All Rights Reserved. • Printed in the USA. • www.simplexdirect.com
®
LOAD BANK MANUAL • Saturn 3000 DV • W.O. 63798/2 • page 10 of 20
RELUBRICATION TIME INTERVAL
for motors with regreasing provisions.
NEMA Frame Size
140 – 180
210 – 360
400 – 510
1800 RPM
Over 1800
1800 RPM
Over 1800
1800 RPM
Over 1800
and less
RPM
and less
RPM
and less
RPM
Standard
3 yrs.
8 mo.
2 yrs.
8 mo.
1 yr.
3 mo.
Severe
1 yr.
3 mo.
1 yr.
3 mo.
6 mo.
1 mo.
Seasonal
See Note 2.
Standard:
Up to 16 hours of operation per day, indoors, 100°F maximum ambient.
Severe:
Greater than 16 hours of operation per day. Continuous operation under high
ambient temperatures (100° to 150°F) and/or any of the following: dirty, moist locations,
high vibration (above NEMA standards), heavy shock loading, or where shaft extension
end is hot.
Seasonal:
The motor remains idle for a period of 6 months or more.
Note:
1. For motors nameplated as “belted duty only” divide the above intervals by 3.
2. Lubricate at the beginning of the season. Then follow service schedule above.
EVERY 50
HOURS
OR 6 MONTHS
Check the tightness of
the electrical connec-
tions. The expansion
and contraction caused
by Load Bank operation
may result in loose con-
nections. The vibrations
caused by the cooling
fan may also loosen
electrical connections. If
the Load Bank is trans-
ported “over the road”,
the electrical connec-
tions should be checked
for tightness at a shorter-
than-normal time inter-
val. See “Primary In-
spection”.
MOTOR
LUBRICATION
Motors are properly lubricated at the
time of manufacture. It is not necessary
to lubricate at the time of installation
unless the motor has been in storage for
a period of 12 months or longer (refer to
lubrication procedure that follows).
Inspect the fan motor supplied with your
Load Bank for grease fittings. If the
motor contains grease fittings you must
lubricate the motor. If lubrication in-
structions are shown on the motor name-
plate, they will supersede this general
instruction. Belt driven cooling fans have
bearings which should be lubricated.
Bearings should be lubricated every 50
hours of operation or 6 months which-
ever comes first.
Lubrication Procedure
1. Stop motor. Disconnect and lock out
of service.
2. Remove contaminants from grease
inlet area.
3. Remove filler and drain plugs.
4. Check filler and drain holes for block-
age and clean as necessary.
5. Add proper type and amount of
grease. See the
Relubrication Time
Intervals
table for service schedule
and
Relubrication Amounts
table
(see next page) for volume of grease
required.
6. Wipe off excess grease and replace
filler and drain plugs.