10
Switzer operating instructions pressure switch, model PS01-W1.
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6
Maintenance
Inspections should be carried out at quarterly to yearly intervals depending upon
operating conditions.
Isolate instrument from process and power before removing lid. Check terminals
for tightness.Check that cable tails are not fouled or chafed. Check for internal
condensation and rectify.
It is recommended that the instruments are checked for calibration/operation once a
year. However, in critical applications, microswitch is to be operated and checked more
frequently to ensure correct functioning.
Process lines are to be periodically checked for accumulation of dust / foreign particles
to avoid clogging. Clogging would render the instrument non-functioning as the sensing
element shall not have free movement during pressure fluctuations.
In the case of diaphragm operated instruments, do not attempt dismantling the sensing
diaphragm as it would permanently disturb the factory settings. Special jigs are needed
for reassembly and hence replacement is not recommended at the user end. However,
cleaning of the diaphragm chamber can be performed by flushing with a cleaning fluid,
which is compatible with the diaphragm and its housing material.
Vent or Drain periodically.
6. Maintenance
