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LOAD BANK MANUAL • Saturn 3000 DV • W.O. 63798/2 • page 9 of 20
field adjustment. The setpoint of the
Exhaust Temperature Switch (EXTS)
may be changed by rotating the adjust-
ment knob. Consult the Simplex Ser-
vice Department (217-483-1600 24hrs)
before changing the temperature switch
setpoint.
MAINTENANCE
The Load Bank has been designed to
require minimum maintenance. All com-
ponents have been chosen for a long,
reliable life. Two basic intervals of main-
tenance are required: each operation
and every 50 hours or 6 months (which-
ever comes first).
EACH OPERATION
The air intake screens and louvers, fan
and cooling chamber, and exhaust open-
ings must be checked for any obstruc-
tions or foreign objects. Due to the high
volume of air circulated, paper and other
items can be drawn into the air intakes.
During Load Bank operation insure that
air is exiting from the top exhaust vent.
The load branches should be checked
for blown fuses or opened load resis-
tors. To check the fuses or load resis-
tors, operate the Load Bank from a
balanced 3-phase source and check
the three line currents. The three cur-
rent readings should be essentially the
same. If a sizeable difference is noted
one or more load fuses or load resistors
may have malfunctioned.
Overgreasing is a major cause
of bearing and/or motor failure.
The amount of grease added
should be carefully controlled.
Also make sure dirt and con-
taminants are not introduced
when adding grease.
If lubrication instructions are
shown on the motor nameplate,
they will supersede this gen-
eral instruction.
If motor is nameplated for haz-
ardous locations, do not run
motor without all of the grease
or drain plugs installed.
The Pillow Block Bearings (PN
22691040), which are used on
Saturn Load Banks, are pre-lu-
bricated at the time of manufac-
ture. These bearings are lubri-
cated with Mobil Mobilith AW2
grease (a Lithium based
grease). Lubrication using an-
other grease may cause bear-
ing failure.
See Appendix D -
Pillow Block Bearings Lube In-
terval for additional information.
For continued safety and for
maximum equipment protec-
tion, always replace fuses with
one of equal rating only.
