Atest Gaz ProGas 4, User Manual

Page: 21 / 48

www.atestgaz.pl
The calibration also includes checks of the following explosion proof properties:
tightness of cables in cable glands, retighten glands when necessary,
symptoms of a flameproof housing damage.
5.6.3 Replacement of fast wearing parts
Please refer to Table 12 for the recommended lifetime and replacement schedule of fast wearing parts.
It is highly recommended to entrust all jobs related to the measuring head to the service
staff of the manufacturer or to properly trained personnel.
All jobs must be performed with the power voltage for the detector switched off.
5.6.3.1 Replacement of the sensor’s housing {1}, {2}, {3}
Housing must be replaced in the following way (e. g. when contamination of the piece of sintered material
is found out):
loosen the locking screws in the bushing with a 1.5 mm Allen wrench (see Figure 3),
replace the housing with the attention paid to make sure that the housing is correctly installed, i.e.
screws must be tightened until a clear resistance is sensed),
retighten the securing screws (if the screw fails to fully sink into the hole it means that
components of the head do not match).
5.6.3.2 Membrane replacement {4}
To replace the membrane follow the procedure below:
loosen the securing screws in the bushing (see Figure 3) with a 1.5 mm Allen wrench,
remove the cover,
replace the membrane (take account for the arrangement of the components as shown in Figure
11),
The membrane should be put with the hydrophobic (glossy) side outwards.
reinstall the protective cover and retighten the securing bolts.
s. 21|27
User Manual: POD-064-ENG R05