Operation
6
Operation
6.1
Preparing for commissioning
6.1.1
Check downtimes
Before starting up the pump, check the downtime and per-
form the following actions:
–
Check the fill level.
–
If the hydraulic parts are dirty, clean them.
–
Check that the impeller runs freely.
–
If the pump is shut down for over 1 year, replace elas-
tomer seals (O-rings, shaft sealing rings).
6.1.2
Filling and bleeding
The pump housing is filled with conveyed fluid. During
commissioning, the suction line is filled fully by the pump
and vented.
Additional measures for venting are not
required.
WARNING
Risk of injury and poisoning due to hazardous pumped
liquids!
Use protective equipment for any work on the pump.
Safely collect the fluid and dispose of it in accordance with
environmental regulations.
1. Unscrew the filler cap.
2. Pour in the conveyed fluid.
Note the fill volumes
9.3.5 Pump housing fill volume, Page 30).
3. Screw the filler cap back on.
6.1.3
Check direction of rotation
DANGER
Danger to life from rotating parts!
Use personal protective equipment when carrying out any
work on the pump.
Maintain an adequate distance from rotating parts.
NOTE
Material damage as a result of dry running!
Make sure the pump is filled properly.
1. Switch on motor for max. 2 seconds and switch it off again
immediately.
2. Visually check the direction of rotation of the motor fan
impeller and make sure that the direction of rotation of the
motor matches the direction arrow on the pump casing.
3. If the sense of rotation is different: Change over the two
phases
5.5 Electrical connection, Page 13).
6.2
Commissioning
6.2.1
Switching on
Pump set up and connected properly
Motor set up and connected properly
All connections stress-free and sealed
All safety equipment installed and tested for functionality
Pump prepared, filled and vented correctly
Tank fill sufficient
DANGER
Risk of injury and poisoning due to pumped liquid spray-
ing out!
Use personal protective equipment when carrying out any
work on the pump.
NOTE
Risk of cavitation if suction flow is restricted!
Open the suction-side fitting and do not use it to regulate
the flow, if installed.
Do not open the pressure-side fitting beyond the operating
point.
NOTE
Material damage due to overheating!
Do not operate the pump for long periods with the pressure-
side fitting closed.
Observe the minimum flow rate
NOTE
Material damage as a result of dry running!
Make sure the pump is filled properly.
1. Open the suction-side fitting, if installed.
2. Close the pressure-side fitting.
3. Open the exhaust line fitting.
4. Switch on the motor and check it for smooth running.
5. Make sure that the suction pipe and pump are vented fully.
Check the vacuum gauge.
Gas escapes through the exhaust line.
6. Once the motor has reached its nominal speed, open
the pressure-side fitting slowly until the operating point is
reached.
7. Close the exhaust line fitting.
8. Make sure temperature change is smaller than 5 K/min for
pumps with hot fluids.
9. After the initial stress due to the pressure and operating
temperature, check that the pump is not leaking.
14
SMP
11335/0320
