Rapide
2.0v-11.2019
19 | Page
6 Operation
6.1 Pre-commissioning the Pump
6.1.1 Checking the Direction of Rotation with
Dry Pump
[
Switch the motor on and check the direction of rotation;
switch immediately off again.
[
If the direction of rotation is different: swap two of the
phases (*check with electrician)
6.1.2 Starting the Pump
Risk of injury and poisoning due to pumped liquid
spraying out!
u
Use personal protective equipment when carrying out any
work on the pump.
Equipment damage due to excess pressure
u
Do not
operate the pump with the discharge-side fitting
closed.
u
Operate the pump only inside the tolerances specified
by the manufacturer (
g
Appendix A)
.
Risk of injury and poisoning due to hazardous
pumped liquids!
u
Safely collect any leaking pumped liquid and dispose of it
in accordance with environmental rules and requirements.
Checklist:
[
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.
1. Close all drainage taps.
2. Open the suction-side and the discharge-side fittings.
3. Switch ON the motor and make sure it is running smoothly.
4. Run the pump, flushing with water first (cold commissioning)
to check for leaks.
5. Verify that neither the pump nor the pipe connections are
leaking.
6. Perform a second flush by running the pump, 10–20
revolutions with pumped liquid, to remove residue and
water inside the pump.
DANGER
WARNING
6.1.3 Switching OFF the Pump
Risk of injury due to hot pump parts!
u
Use personal protective equipment when carrying out any
work on the pump.
Risk of dead heading and hose burst due to closed
suction or discharge!
u
Keep the suction and discharge side fittings opened till the
rotor has come to a complete stop.
Equipment damage due to sediments
u
If the pumped liquid crystallizes, polymerizes or solidifies:
–
Flush pump
–
Make sure that the flushing liquid is compatible
with the pumped liquid.
1. If necessary: Flush and empty the pump.
2. Switch off power to the motor.
3. Close the discharge side fitting.
4. Check all tie bolts and tighten them if necessary (only
after putting the pump into service for the first time).
WARNING
NOTE