Revision H, 11/10 VK 7025 Dissolution Apparatus Page 113
P/N 70-9033 Operator’s Manual Maintenance and Troubleshooting
Varian, Inc.
Fuse Replacement
The fuse is located in the power entry module on the rear of the heater / circulator.
Step 1. Before checking or attempting to replace a fuse, remove the power cord
from the heater / circulator.
Step 2. There is a release slot on the bottom of the fuse compartment. The fuse
compartment holder is released by inserting a small screw driver
beneath the slot.
Step 3. A slight application of pressure upward releases the compartment.
Step 4. Pull the fuse compartment holder out of the power entry module. The
fuse and a spare are located inside. The fuse is a 10 amp metric
(5 x 20 mm) fuse for 115 V and 5 amp metric (5 x 20 mm) fuse for 230 V.
Step 5. Replace the fuse in the compartment.
Step 6. Push the fuse compartment holder into the power entry module until both
sides snap. Replace the power cord.
Warning
The dissolution apparatus contains electrical circuits, devices,
and components operating at dangerous voltages. Contact with
these circuits, devices, and components can cause death,
serious injury, or painful electric shock.
Panels or covers that are retained by fasteners which require
the use of a tool for removal may be opened only by Varian-
trained, Varian-qualified, or Varian-authorized service engineers.
Warning
Never replace a fuse with one of a higher amperage rating. Doing
so may compromise the safety margin and could result in damage
to the instrument or personal injury.
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