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Operating Instructions
18
1096.0799 | VU / VH Series
10/2010
6 Operation
For pumps/aggregates in potentially explosive areas
(
ATEX additional instructions)
6.1 Preparations for commissioning
6.1.1
Identifying pump type
►
Identify the pump/aggregate type (
Nameplate, page 9).
Pump/aggregate types vary, e.g. with regard to material,
suction capacity, type of shaft sealing, auxiliary operating
systems.
6.1.2
Removing preserving agent
Only required for treated pump.
►
Remove preserving agent (
Removing preserving agent,
page 14).
6.1.3
Checking shut-down period
►
Shut-down periods > 1 year: contact the manufacturer and
ask for required measures.
►
Shut-down periods < 1 year: take all steps as required for
commissioning (
Commissioning, page 18).
6.1.4 Filling
1.
Remove the screw plug from port U
V
(
Dimension draw-
ing, page 46 et seq.).
2.
Fill the pump with operating liquid maximally up to the
middle of the shaft.
3.
When operating liquid escapes from port U
V
, stop the filling
process.
4.
Screw the screw plug into port U
V
(
Dimension drawing, page 46 et seq.).
5.
Open the suction-side fitting.
6.
Open the pressure-side fitting.
7.
Make sure all ports and connections are tight.
6.2 Commissioning
6.2.1 Switch-on
Aggregate correctly set up and connected
Motor correctly connected
Coupling adjustment checked
All connections stress-free and sealed
If available: auxiliary operating systems ready for op-
eration
All safety devices installed and checked for proper
functioning
Pump/aggregate properly prepared and filled
DANGER
Risk of injuries caused by running aggregate!
►
Do not touch the running aggregate.
►
Do not carry out any works on the running aggregate.
RISK OF ELECTRIC SHOCK
Risk of death from electric shock!
►
Any electrical works must be carried out by qualified electri-
cians only.
►
Observe the IEC 30364 (DIN VDE 0100) and for potentially
explosive areas the IEC 60079 (DIN VDE 0165) standard.
WARNING
Risk of injuries caused by vacuum or harmful media to be
pumped and operating liquid!
Use protective equipment when carrying out any works on the
pump/aggregate.
CAUTION
Risk of material damage caused by dry running!
►
Make sure the pump has been properly filled.
CAUTION
Risk of cavitation when throttling down the suction flow!
Risk of cavitation when the fitting in the suction pipe is
closed!
►
Completely open the suction-side fitting and do not use it
for controlling the flow rate.
►
Open the pressure-side fitting.
CAUTION
Risk of material damage caused by a closed pressure pipe!
►
Do not operate the aggregate when the pressure-side fitting
is closed.
►
Observe the max. permissible operating limits (
Operating
limit values, page 36).
max. permissible pressure difference
max. permissible compression pressure
max. permissible operating liquid temperature
max. permissible operating liquid viscosity
max. permissible operating liquid density
max. permissible temperature of the medium to be
pumped
1.
Open the pressure-side fitting.
2.
Ventilation port (if available): open the fitting.
3.
Switch on the motor.
4.
Operating liquid: open the fitting.
5.
Open the suction-side fitting.
6.
Ventilation port (if available): Close the fitting as soon as
the motor has reached its nominal speed.
7.
Provide for a smooth running behaviour of the aggregate.
8.
Check the aggregate and connections for tightness.