MAINTENANCE
Failure to properly maintain the
equipment can result in severe per-
sonal injury and product failure. The
instructions contained herein
should be carefully reviewed.
understood and followed. The fol-
lowing maintenance procedures
should be performed regularly:
1. Bearing Lubrication
2. Insulation resistance check
3. Cleaning
This checklist does not represent
an exhaustive survey of mainte-
nance steps necessary to ensure
safe operations of the equipment.
Particular applications may require
further procedures. Should further
information be desired or should
particular problems arise which are
not covered sufficiently for the pur-
chaser’s purposes, the matter
should be referred to the local
Siemens Sales Offices.
The use of unauthorized parts in
the repair of the equipment, tam-
pering by unqualified personnel, or
removal or alterations of guards or
conduit covers will result in danger-
ous conditions which can cause
severe personal injury or equipment
damage. Follow all safety instruc-
tions contained herein.
MAINTENANCE
DANGER
Hazardous Voltages.
Will cause death or serious injury.
To avoid the danger, always de-energize all power sources and
ground the equipment before maintenance. Only qualified
personnel should perform maintenance.
Thermostats
All RGZESDI motors are equipped
with Class F normally closed ther-
mostats for detection of overload
conditions. The thermostat is a
device that is intended to be used
in the alarm or protective circuit of
an RGZESDI motor. It is in direct
contact with the stator coil and is
useful in guarding against loss of
normal ventilation air, high ambient
temperature, and prolonged opera-
tion of self-ventilated motors at
very low speeds.
Blowers (if Equipped)
Blower motors, where supplied,
must be in operation to supply cool-
ing air before loading totally
enclosed blower cooled (TEBC)
motors. Blower should be checked
for correct rotation. Air movement
should be from non-drive end
toward drive end of the motor.
The nameplate voltage and fre-
quency should agree with the
power supply. Motors will operate
successfully on line voltage within
+/- 10% of the nameplate value or
frequency /- 5%. The com-
bined variation shall not exceed
+/- 10%.
Wiring of Blower motor should
meet the National Electric Code
and local building codes.
Encoders (if Equipped)
Follow encoder instructions sup-
plied with the RGZESDI motor for
encoder operation and wiring.
ACCESSORIES
6
WARNING
Hazardous Voltages and Entanglement.
Can cause death, serious injury, or property damage.
To avoid the danger, the control circuit should be designed to
prevent the automatic starting of the motor when the
thermostat resets. Always de-energize all power sources and
ground the equipment before maintenance. Only qualified
personnel should perform maintenance.
