Rittal DK 7859.312, Руководство по сборке и эксплуатации

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8 Inspection and maintenance
EN
18 Rittal PSM MID measuring module for CMC III
8 Inspection and maintenance
8.1 Safety instructions
– Prior to performing any work on the PSM MID meas-
uring module, the unit must be disconnected from
the power supply and protected against being
switched on again.
– The unit does not need to be opened and so prohib-
ited.
8.2 Work to be performed
8.2.1 Inspection
The system must be checked regularly for its com-
plete correct functioning. Rittal recommends a regular
function test when required. The intervals between the
tests should be no longer than one year.
8.2.2 Cleaning
„
Clean the unit in regular intervals using a lightly
moistened cloth.
8.2.3 Maintenance
Because the unit is largely maintenance-free, the
maintenance of the unit is largely limited to the "in-
spection" and "cleaning" tasks.
8.2.4 Recalibration
After expiration of the calibration end date printed on
the measuring module, the unit must be recalibrated if
it is still to be deployed for billing purposes.
„
If necessary, contact Rittal for a recalibration of the
unit.
8.2.5 Test procedure
To test the unit, an adaptor kit can be obtained from
Rittal (see section 13 "Customer service addresses").
With this adaptor kit, under reference conditions on a
suitable calibration rig (normally obtainable from a
standards bureau), the flashing rhythm of the LEDs,
and so the complete unit, can be tested using the MID
displays (fig. 4, item 2 or item 9).
Note: Risk of damage!
Do not use aggressive substances such
as cleaner's naphtha, acids, etc., for
cleaning as they may cause damage to
the plastic surface.