Cole-Parmer Instrument Company
Manufactured by:
Barnant Company
Page
15 of 24
Where possible, swap known good parts to localize and isolate the problem. The
following is a list of possible problems and remedies:
VERIFY AC POWER IS OPERATIVE.
MOTOR WILL NOT RUN, DISPLAY DOES NOT LIGHT:
1. fuse blown
- replace fuse
2. power cord not connected properly - check & replace
3. AC power switch failure
- replace switch assembly
4. unit connected to dead outlet
- verify supply is HOT
5. power supply failure
- replace main PCB assembly
UNIT BLOWS FUSES:
1. motor drive failure
- check using known good motor
2. defective main PCB
- replace main PCB assembly
3. wrong fuse installed
- check fuse rating
MOTOR WILL NOT REVERSE:
1. defective main PCB
- replace main PCB assembly
2. defective keypad
- replace keypad
MOTOR WILL NOT RUN, DISPLAY LIGHTS:
1. defective keypad
- replace keypad
2. defective main PCB
- replace main PCB assembly
3. defective motor assembly
- replace motor assembly
4. dirty encoder switch
- clean switch & disk
5. wrong operating MODE
- MODE set to INT for front panel
operation,
mA
or
V
for
remote
operation
LOSS OF SPEED CONTROL, OR IMPROPER SPEEDS:
1. defective main PCB
- replace main PCB assembly
2. dirty encoder switch
- clean switch & disk
Barnant Company
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28W092 Commercial Avenue
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Barrington, IL U.S.A. 60010-2392
847-381-7050
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800-637-3739
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847-381-7053 (Fax)
e-mail:
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Web Site: http//www.barnant.com
