Troubleshooting - VWR Standard Series Instruction Manual

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roUbleshooting dvanced
Problem
Unit will not run
Unit is excessively noisy
Unit not shaking at proper speed
E3
E4
E7
E8
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rbital haker
Cause
Mechanical obstruction
Motor obstruction
Sensor fan misaligned
Motor misaligned
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Mechanical obstruction
Drive system failure
Ceased bearing
Drive belt broken
Improper positioning of load
Maximum load exceeded
Unable to reach set speed
Electronics error
Solution
Add or replace fuse as necessary. If problem persists, please contact your VWR representative for repair.
Ensure that tray is secured tightly. If problem persists, please contact your VWR representative for repair.
Perform speed calibration test on page 10. If problem persists, please contact your VWR representative
for repair.
Remove mechanical obstruction. If problem persists, the reason may be the drive system and should not
be addressed by the end user. Contact your VWR representative for repair.
Ensure the load is evenly distributed and does not exceed the maximum load capacity for the unit. See
"Load Sensing Function" on page 10. If problem persists, please contact your VWR representative for
repair.
Reduce the speed setting or weight. This function can be disabled by following the instructions listed
under "Additional Load Sensing Feature" on page 10. (NOTE: This function is only available on models
3750 and up and is not available on Model 3500 shakers.)
This error cannot be fixed by the end user. Please contact your VWR representative for repair.
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