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7 Diagnosis, asset management and service
WIKA Operating Instructions - Process pressure transmitter CPT-2x
5. Remove the form seal for the measuring cell and remove it by a
new one
6. Screw the process component into the process fitting, tighten the
hexagon (wrench size see chapter "
Dimensions
", max. torque see
chapter "
Technical data
")
7. Insert new O-ring seal for the process fitting
8. Install the process pressure transmitter in the welded socket,
tighten compression nut
The cleaning is finished.
The pressure transmitter is directly ready for operation, a fresh adjust-
ment is not required.
7.3 Rectify faults
The operator of the system is responsible for taking suitable meas-
ures to rectify faults.
The first measures are:
•
Evaluation of fault messages
•
Checking the output signal
•
Treatment of measurement errors
Further comprehensive diagnostics options are available with a PC/
notebook with PACTware and the suitable DTM. In many cases, the
reasons can be determined in this way and faults rectified.
Depending on the reason for the fault and the measures taken, the
steps described in chapter "
Setup
" must be carried out again or must
be checked for plausibility and completeness.
7.4 Exchange process module on version IP68
(25 bar)
On version IP68 (25 bar), the user can exchange the process module
on site. Connection cable and external housing can be kept.
Required tools:
•
Hexagon key wrench, size 2
Caution:
The exchange may only be carried out in the complete absence of
line voltage.
In Ex applications, only a replacement part with appropriate Ex ap-
proval may be used.
Caution:
During exchange, protect the inner side of the parts against contami-
nation and moisture.
Proceed as follows when carrying out the exchange:
1. Losen the fixing screw with the hexagon key wrench
2. Carefully detach the cable assembly from the process module
Reaction when malfunc-
tion occurs
Fault rectification
Reaction after fault recti-
fication
