Maintenance
2106M0525 Iss 2 Nov 05 23
Grip the sensor collar firmly where it meets the enclosure and unscrew the sensor in a
counter-clockwise direction. Refer to the warning about sensor handling and disposal at the
start of this chapter.
6 Fit the new sensor by reversing the removal procedure.
Check that the replacement sensor is the correct type. Screw the sensor firmly in a clockwise
direction into the enclosure base until tight.
7 Refit the M20 locknut.
Caution The locknut must be fitted to maintain certification.
8 Reconnect the sensor wiring at the terminal block.
Cautions All conductors must be fully tightened down within the terminals.
Conductor tightening screws must be below the surface of the
terminal and it is important that the correct sized screwdriver is used.
An oversized screwdriver will break the insulation around the
terminal.
The enclosure is fitted with an earth continuity plate and internal and
external earth studs. A suitable ring-type terminal lug must always be
used to secure the earth conductor.
9 Close the enclosure lid and secure it.
Cautions Ensure there is no moisture inside the enclosure before closing the
lid.
Ensure the seal, between the body and the cover, is correctly located
and is secure.
Ensure the cover is securely clamped to the body of the enclosure.
Use only the captive fixing screws supplied, replacement with
alternative screws will invalidate certification.
Fully tighten the four M4 captive securing hex screws.
10 Dispose of the removed sensor.
Refer to the warning about sensor handling and disposal at the start of this chapter.
11 Power-up the detector and check its operation.
Wait until the detector has completed its warm-up period, see page 30. The controller may
need to be calibrated for the new detector. See the controller's manual for more information.
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