Troubleshooting
Instruction Manual OilGuard 2 W
14809E/2
75
10.5
Replacing the fine-wire fuses
The following describes the replacement of the fine-wire fuse on the AQ2Basi print:
WORKSTEP
ADDITIONAL INFO / IMAGES
1.
Interrupt the service voltage to the photome-
ter.
Section 5
2.
Loosen the five screws (circles) with a 7 mm
key and remove the cover.
7 mm hex key
3.
Remove the old fine-wire fuse (circle) from
the motherboard (AQBasi) and replace with a
new one (type T2A).
4.
Carefully mount the cover and fasten with the
five screws.
Damage to the threaded inserts in
the housing due to excessive tightening
of the screws on the cover:
Use a hex key without a T-handle to tighten
the screws of the cover finger-tight (tighten-
ing torque 1 Nm).
7 mm hex key
5.
Put the instrument into operation again.
