Document Ref 941113-001 Rev 2 Page 5-3
Quantium 310 Maintenance Manual Maintenance Procedures - Electronics
5.2 Changing a fuse in the calculator head
Before starting the maintenance procedure, please refer to section 2.
Ensure the dispenser is isolated and all power is turned off.
The fuses are accessed from side A of the calculator head (see section 2.3 for the
identification of the dispenser sides).
Tools required
•Replacement fuse
•Flathead screwdriver
INSTRUCTIONS
1) Follow the instructions given in section 2.5 for gaining access to the calculator head.
2) Locate the fuse needing replaced (on DIN rail, centreplate cover or electronic board).
3) Access the fuse:-
•Fuses on the electronic boards only - using the flathead
screwdriver, make a
1
/
4
turn anti-clockwise to open the
relevant fuse casing to access the fuse.
•Fuses on the DIN rails only - unclip the fuse holder to
access fuse.
4) Remove the blown fuse.
5) Fit a new fuse into the casing.
6) Close fuse casing/holder:-
•Fuses on the electronic boards only - using the flathead screwdriver, make a
1
/
4
turn
clockwise to close the relevant fuse casing.
•Fuses on the DIN rails only - close the fuse holder until it clicks shut.
7) Ensure that all tools and unused materials are removed.
8) Close the calculator head door and lock.
9) Re-instate power to the dispenser and test its operation.
10) Dispose of all waste accordingly.
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