Stubbe SHB 100-200, Original Operating Manual

Page: 22 / 36

Maintenance
7 Maintenance
For pumps in potentially explosive atmospheres ( → ATEX
additional manual).
Trained service technicians are available for fi tting and
repair work. Submit evidence of conveyed medium on
request (DIN safety data sheet or safety certi
fi cate).
7.1 Inspections
The inspection intervals depend on the operational strain
on the pump.
DANGER
Risk of injury due to running pump!
Do not touch the running pump.
Do not carry out any work on the running pump.
WARNING
Risk of injury and poisoning due to hazardous pumped
liquids!
Use personal protective equipment when carrying out any
work on the pump.
1. Check at appropriate intervals:
– Adherence to the minimum fl ow rate
– Normal operating conditions unchanged
– Alignment of coupling
2. For trouble-free operation, always ensure the following:
– No dry running
– No leaks
– No cavitation
– Suction side open gate valves
– Free and clean fi lters
– Suf fi cient pump inlet pressure
– No unusual running noises or vibrations
7.2 Maintenance
Mechanical seals are subject to natural wear and tear
which is heavily dependent on the particular operating
conditions concerned. It is therefore not possible to make
general statements about their service life.
DANGER
Risk of electrocution!
All electrical work must be carried out by quali fi ed electri-
cians only.
DANGER
Danger to life from rotating parts.
Ensure coupling guard is fi tted after work on the pump.
DANGER
Risk of injury from running pump!
Do not touch the running pump.
Do not carry out any work on the running pump.
For all installation and maintenance work, disconnect the
motor from the mains and lock.
WARNING
Risk of injury and poisoning due to hazardous or hot fluid!
Use protective equipment for any work on the pump.
Allow the pump to cool down completely before commenc-
ing any work.
Make sure the pump is unpressurized.
Empty the pump, safely collect the pumped liquid and
dispose of it in accordance with environmental rules and
requirements.
7.2.1 Maintenance in accordance with main-
tenance schedule
Perform maintenance work in accordance with the mainte-
nance schedule (
→ 9.3 Maintenance plan, Page 35).
7.2.2 Check sealing medium
Only for version with quench.
1. Check fi lling level of sealing medium.
2. Replace sealing fl uid if necessary:
– Empty seal chamber and collect sealing medium safely
when doing so.
– Fill sealing chamber with sealing medium.
22 SHB BA-2015.12.16 EN 300 486