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LOAD BANK MANUAL • Saturn 3000 DV • W.O. 63798/2 • page 11 of 20
When troubleshooting Load
Bank systems always remove all
test source power, fan/control
power, anti-condensation heater
power, etc.
7. Motor is ready for operation.
Warning: If motor is nameplated for
hazardous locations, do not run mo-
tor without all of the grease or drain
plugs installed.
Grease Type
Unless stated otherwise on the motor
nameplate, the motors on this Load
Bank are pregreased with a polyurea
mineral oil NGLI grade 2 type grease.
Some compatible brands of polyurea
mineral base type grease are:
• Chevron SRI #2
• Rykon Premium #2
• Exxon Polyrex EM
• Texaco Polystar RB
TROUBLESHOOTING
This section is designed to aid the elec-
trical technician in basic Load Bank
system troubleshooting. All of the prob-
lems listed can be verified with a basic
test meter and/or continuity tester. For
safety reasons, when troubleshooting
Load Bank systems always remove all
test source power, fan/control power,
anti-condensation heater power, etc.
COOLING FAN MOTOR WILL
NOT OPERATE
1. Inoperative Fan Circuit Breaker
(CB)
2. Fan/Control Power not available/
incorrect
3. Inoperative Fan Motor (MOT)
4. Fan Motor Contactor (FMC) de-
energized
5. Restriction of air (intake or ex-
haust)
6. Fan pressure switch inoperative
RELUBRICATION AMOUNTS
for motors with regreasing provisions.
NEMA
Volume
Frame Size
cu. in. (fluid oz.)
140
.25 (.14)
180
.50 (.28)
210
.75 (.42)
250
1.00 (.55)
280
1.25 (.69)
320
1.50 (.83)
360
1.75 (.97)
400
2.25 (1.2)
440
2.75 (1.5)
500
3.00 (1.7)
SOME LOAD STEPS
CANNOT BE ENERGIZED
1. Inoperative load step switches
2. Open load step resistor(s)
3. Inoperative load step relays
4. Inoperative load step contactors
5. Open load step fuses
