Troubleshooting And Repair - VWR International 460-0250 Manuel D'utilisation

TROUBLESHOOTING AND REPAIR

This chapter describes possible faults of this instrument along with instructions to the
cause analysis and teaches you how to resolve the fault.
Troubleshooting and Repair
No. Problem
No display shown
in the monitor
1
when the power is
on.
During run, the
housing shakes
2 abnormally and
makes abnormal
noise.
Bad temperature
3
uniformity of block.
The system no
longer operates
4
after changing
block.
Probable Cause
Power is not
connected.
Fuse has burned
out.
Switch is broken.
Others.
Use improper block
Unit is placed on
uneven surface
Round feet badly
worn
Others
Improper
installation of
block.
Bad cooling
components.
Bad grounding of
machine.
15
Remedy
Check the power and connect
it.
Change the fuse
Item no. 460-0266
Change the switch.
Contact VWR
Change the block.
Contact VWR
Place unit on even, stable
surface
Change round feet.
Contact VWR
Re-install the block.
Contact VWR
Check power cable to insure
reliable grounding; Do
remember to turn off the power
when changing block.
5
Section