Maintenance
DANGER! Prior to performing any service or repairs LOCK OUT and TAG OUT electrical power and de-energize
compressed-air soucres.
MOTOR
Brush-type Vacuum Motors generally last a long time when properly maintained. Check Brushes regularly, replace at the
accumulated operating time of 400 hours – the Control Panel indicator reminds the user of this important milestone.
Replace worn or damaged Brushes immediately.
The optional Switched-Reluctance Brushless-type Motor of course does not need Brush service.
Proper break-in of new brushes required prior to applying full-load electrical current.
Motor Replacement
1. Disconnect Power Cord from receptacle.
2. Remove electrical quick-disconnect Cords (Proximity Switch and Control) from the Motor Cover. These
are threaded-body QD connectors. Rotate knurled Ring counter-clockwise to disconnect then unplug
cord from receptacle.
3. Depress lock button to disengage each Latch holding the Motor-Cover onto the Motor.
4. Lift off Motor Cover to gain access to the Motor.
CAUTION! Exercise CAUTION performing steps 4a thru 4c. Rotate Motor Cover while lifting, avoid pulling on or
otherwise damaging lead-wires, as they are permanently attached to the motor and are somewhat delicate. If these wires
do get damaged beyond SAFE use, the entire motor needs to be replaced.
a. Disconnect the wire-nuts connecting the Motor lead-wires to Control-Cord Receptacle (Connector
for the large yellow-jacketed Cord).
b. Disconnect Motor ground wire.
c. Remove Motor (lead-wires intact).
5. Install NEW Motor and reconnect all wires, reversing steps above. Check condition of Motor-mount
Gasket attached to Loader Cover, if necessary replace.
6. Replace the Motor Cover, making sure the lead-wires are not damaged.
7. Secure both Motor-Cover Latches (ensuring that a “click” is heard) locking them in place.
8. Reconnect the Proximity Switch and Control QD (yellow-jacketed) Cords.
9. Plug Loader’s Power Cord into receptacle.
10. Press the UP button on the PLC board to reset the SERVICE Alarm (Loader must be connected to power
source and Power switch turned ON to reset).
Your Whisper® Loader is ready to be put back into service.
Motor Brush Replacement
1. Disconnect Power Cord from receptacle.
2. Remove electrical quick-disconnect Cords (Proximity Switch and Control) from the Motor Cover. These are threaded-
body QD connectors. Rotate knurled Ring counter-clockwise to disconnect then unplug Cord from Receptacle.
3. Depress lock button to disengage each Latch holding the Motor-Cover onto the Motor.
CAUTION! Exercise CAUTION when performing step 4. Rotate Motor Cover while lifting, avoid pulling on or other-
wise damaging lead-wires, as they are permanently attached to the motor and are somewhat delicate. If these wires do
get damaged beyond SAFE use, the entire motor needs to be replaced.
4. Lift off Motor Cover and set aside – leaving lead-wires attached – to gain access to Motor.
5. Carefully spread snap-on “Ears” of the plastic Fan Cover and remove to expose Motor Brushes.
6. Remove Brush-retaining Screws.
© Copyright 2007 IMS Company. All rights reserved. An ISO 9001:2000 Registered Quality Company
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