Power Supply Fuse Replacement
Power Supply Fuse Replacement
There are three fuses used in the C4000 power supply,
and each fuse has a different rating.
Before you start, make sure you have:
The following fuses with these ratings:
F1 = 0.5 A
F2 = 0.25 A
F3 = 1.0 A
OR Compac fuse kit F-C4PWR-FUSEKIT
Fuse locations are displayed on the C4000 Power Supply Board
(see page 92).
Every new dispenser is supplied with one spare fuse
of each value located on the inside of the flameproof box lid.
Remove C4000 power supply fuse(s):
1. Degas the dispenser (see page 40).
2. Switch off the power supply to the dispenser.
Never remove any electrical components without first
switching off the power to the dispenser. Failure to turn off the power
could result in an electric shock.
3. Remove the flameproof box lid.
4. Remove the blown fuse and discard.
Take basic anti-static precautions by wearing a
wristband with an earth strap.
Install new C4000 power supply
fuse(s):
1. Replace the blown fuse element with a new one of equal type and
rating.
You must use the correct rating when replacing a fuse.
The correct ratings are printed next to each fuse on the printed
circuit board. Using the incorrect fuse rating may compromise the
intrinsic safety of the dispenser.
2. Replace the flameproof box lid, ensuring that the O-ring in the lid
engages in its associated groove.
3. Turn on the power to the dispenser.
Do not power up the dispenser with the flameproof box
lid removed.
Before replacing the lid on the flameproof box, make
sure that the O-ring is not damaged and is seated properly in its
groove. If the O-ring is damaged and needs replacing, replace it with
an O-ring of the same size and specification (176 N70).
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