▪ Ensure that the maintenance technician is familiar with the safety procedures
which relate to the products pumped.
▪ Allow the pumps to cool to a safe temperature before fitting lifting brackets or
starting maintenance work.
▪ Vent and purge the dry pumping system before starting any maintenance
work.
▪ Isolate the dry pumping system and other components in the process system
from the electrical supply so that they cannot be operated accidentally.
▪ W
ait for at least four minutes after switching off the electrical supply before
touching any electrical component on the dry pumping system.
▪ Route and secure cables, hoses and pipelines during maintenance to avoid
the possible risk of trips or entrapment.
▪ The enclosure panels should only be removed when the dry pumping system
has been switched off and allowed to cool sufficiently (as an indication the dry
pumping system should be left for one hour with cooling water still connected
with flow characteristics as defined in Technical data on page 15).
▪ Wear appropriate safety clothing when coming into contact with contaminated
components. Dismantle and clean contaminated components inside a fume
cupboard.
▪ If the cables between a motor and an inverter have been disconnected and
refitted then the pump rotation should be checked.
▪ O-ring replacement intervals vary depending on the application.
▪ Dispose of the components, grease and oil safely.
▪ Take care to protect the sealing faces from damage.
▪ Do not touch or inhale the thermal breakdown products of fluorinated
materials which may be present if the dry pumping system has been
overheated to 260 °C and above. These breakdown products are very
dangerous. Fluorinated materials in the dry pumping system include oils,
greases and seals. The dry pumping system may have overheated if it was
misused, if it malfunctioned or if it was in a fire. Our safety datasheets for the
fluorinated materials used in the pump are available on request.
The dry pumping system requires little operator maintenance between overhauls.
Pump protection sensors fitted to the dry pumping system do not require routine
maintenance. The maintenance operations that can be carried out are described
in the following sections. The frequency of maintenance operations depends on
the process. Adjust the frequency of maintenance operations according to your
experience.
When maintaining the dry pumping system, use replacement parts, seals and
fittings supplied by us. Refer to Service on page
130, Spares and accessories on
page 131. Ensure that the purge gas and cooling water supplies are connected in
parallel and that they meet the specifications given in Technical data on page 15.
Contact us for more information.
Maintenance
07/2021 - ©Atlas CopcoPage 1061950840208_A
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