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Added grease must be compatible with the original equipment’s
grease. If a grease other than those stated in 4.2.1 is to be utilized
contact
the
motor
manufacturer.
Nameplate
information
supersedes section 4.2.1 (GREASE TYPE). New grease must be
free of dirt.
Failure to follow these instructions and procedure
below may result in bearing and/or motor damage.
For
an
extremely
dirty
environment,
contact
the
motor
manufacturer for additional information.
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Clean the grease inlet plug or zerk fittings prior to regreasing.
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(If present) Remove grease drain plug and clear outlet hole
blockage.
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Old grease may completely block the drain opening and must be
mechanically removed prior to regreasing. Forcing a blocked
drain open by increased greasing pressure may collapse bearing
shields and / or force excess grease through the bearings and
into the motor.
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Add grease per Table 4 4
@,
Re install grease inlet and drain plugs (if removed).
5 $
6*
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energize a Hazardous Locations motor without all grease
fittings properly installed.
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Assume
NEMA 286T (IEC 180), 1750 RPM Vertical motor driving
an exhaust fan in an ambient temperature of 43° C and the
atmosphere is moderately corrosive.
<,
Table 4 1 list 10,000 hours for standard conditions.
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Table 4 2 classifies severity of service as “Severe” with a
multiplier of 0.5.
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Table 4 3 lists a multiplier value of 0.5 for “Vertical”
@,
(Eq. 4.2) Interval = 10,000 hrs x 0.5 x 0.5 = 2500 hrs
Table 4 4 shows that 1.5 in
3
of grease is to be added.
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Before trouble shooting a motor, carefully read and fully understand
the warnings, cautions
safety notice statements in this manual.
5 $
6* & 3
'
$
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Motors nameplated for use in Division 1 Hazardous Locations can
only be disassembled, modified or repaired by the plant of
manufacturer or a facility that is Listed under UL’s category “Motors
and Generators, Rebuilt for use in Hazardous Locations”. Failure to
follow these instructions could result in serious personal injury,
death and/or property damage
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Motor disassembly must be performed by a party approved by the
motor manufacturer. To disassemble the motor without approval
voids the warranty.
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