WATERS CORPORATION 2424, Operator'S Manual, Page: 124 / 196

4-14 Maintaining the Detector
Replacing fuses
The detector requires two 5.00 A, 250 V, 5 × 20 mm (IEC) fuses.
Suspect a fuse is open or otherwise defective when
• the detector fails to power-on.
• the display is blank.
• the fan does not operate.
To replace the fuses
Requirement:
Replace both fuses, even when only one is open or otherwise
defective.
1. Power-off the detector and disconnect the power cord from the power
entry module.
2. Pinch the sides of the spring-loaded fuse holder, which fits above the
power entry module on the rear panel of the detector. With minimum
pressure, withdraw the spring-loaded fuse holder.
3. Remove and discard the fuses.
4. Make sure that the new fuses are properly rated for your requirements.
Insert them into the holder and the holder into the power entry module,
gently pushing until the assembly locks into position.
Warning:
To avoid electric shock, power-off and unplug the
detector before examining the fuses. For continued protection
against fire, replace fuses only with those of the same type and
rating indicated on the module.
Fuse receptacle
Power entry module
Fuse holder