Service; Sensor Module Configuration; Enclosure Replacement; Transmitter Replacement - MSA SMC 5100-02-IT Operating Manual

7

Service

WARNING!
For safety reasons this equipment must be operated and serviced by qualified personnel only.
Failure to follow these warnings can result in serious personal injury or death.
7.1

Sensor Module Configuration

The gas sensor module is comprised of the following sub-assemblies:
5100-02-IT-XX (XX=Enclosure Type) Gas Sensor Module
SPL21813
5200-02-IT-XX (XX=AL or SS)
NOTE: For additional parts and information see Section
7.2

Enclosure Replacement

The enclosure should be replaced if the cover threads or conduit threads have been damaged, or if the enclosure has been
damaged sufficiently that it no longer meets the required area classification.
To replace the enclosure, follow the transmitter and sensor assembly removal instructions, remove the damaged
enclosure from its conduit, install a new enclosure and continue the transmitter and sensor assembly replacement
instructions.
7.3

Transmitter Replacement

The transmitter assembly should be replaced when it is determined that it is unreliable, noisy or cannot be adjusted for
calibration. This may occur due to age, corrosion or failed components.
To replace the transmitter assembly:
1. Remove the cover of the main enclosure.
2. Unscrew the two thumb screws in the top of the cover plate, lift the assembly and rotate 90
service loop.
3. Remove all wires from bond, marking them carefully so they can be correctly replaced.
4. Unplug the sensor connector from the transmitter.
5. Reverse the preceding steps to install the new transmitter.
6. Restore power and allow a minimum of 30 minutes for stabilization before re-calibration.
US
Transmitter Assembly
Sensor Assembly
8 Parts
SMC 5100-02-IT Gas Sensor
List.
7 Service
o
to relieve the wiring
31