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- Regular visual inspection of static seals.
- Regular check for inadmissible leakage at the flush/quench or
sealing pressure system.
- Daily check of pressure, temperature, level and flow of the sealing
medium.
- Regular visual check and replacement of the sealing medium.
Maintenance: Magnetic coupling
- In the case of pump units with magnetic couplings, which are used
in an explosive atmosphere, repair and maintenance work on the
coupling or replacement of the coupling may only be carried out by
Fristam
fitters or personnel trained by
Fristam
.
Before commissioning, a test run under exclusion of an explosive
atmosphere must be carried out and a test protocol specified by
Fristam
must be drawn up.
Maintenance: Grounding
- The equipotential bonding and the grounding must be checked daily
and after every change of location.
Maintenance: Cleaning
- Regular cleaning work must be carried out. Dirt and dust must be
removed.
- Accumulated dust deposits must be removed immediately after they
are visually detected, whereby a limit value of the maximum layer
thickness of 5 mm may not be exceeded.
- Clean the filter in the suction line regularly.
Danger of explosion due to use of incorrect tools according to
occupational health and safety regulation BGR 104
- Never use steel tools in Zone 1 if there is a risk of explosion from
materials of explosion group IIC and hydrogen sulfide, ethylene
oxide, or carbon monoxide.
The functional end of a mechanical seal is indicated by an increase in
the normal average leakage.
Contamination or increase of the sealing medium in the quench/sealing
pressure vessel could be a sign of an impermissible leakage at the shaft
seal. The mechanical seal must be checked and repaired if necessary.
Regular checks must be carried out in order to detect deviations from
the normal operating condition caused by wear or damage in good time.
The troubleshooting tables in the "Additional operator's manual and
assembly instructions" of the respective pump must be observed.
