Repair And Maintenance Of 300V Hi Amperage; Power Supply - VWR 700-0450 Manuel D'instructions

Repair and Maintenance of 300V Hi Amperage Power Supply
The 300V Hi Amperage Power Supply requires no periodic maintenance program with
the exception of an occasional dry wipe-down of the instrument.
Encountering Problems
1. Check the troubleshooting section.
2. Contact VWR's Technical Service Department. Their contact information in your
area can be found at www.vwr.com.
3. If the unit must be shipped back for repair, contact your distributor for a Return
Authorization Number and shipping instructions. The unit will be repaired as
quickly as possible and returned to you.
Replacing the Fuse
One extra fuse is supplied with the 300V Hi Amperage Power Supply. For additional
fuses, contact VWR's Technical Service department.
To replace the fuse:
1. Turn off the main power switch at the rear of the 300V Hi Amperage
Power Supply and detach the power cord.
2. Open the fuse compartment located inside the Power Entry Module by inserting a
small flat blade screwdriver into the slot below the ON/OFF switch. Turn the
screwdriver to gently pry open the fuse compartment.
Note: The fuse compartment will not open with the power cord in place.
3. Pull the fuse holder out of the compartment and inspect the fuse. If the fuse is
burned or there is a break in the fuse element, replace the fuse with an identical type
of fuse (4A/250V) as provided in the fuse holder (see figure below).
4. Place the fuse holder back into the compartment.
5. Snap the cover closed.
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