Operation; Pre-Commissioning The Pump; Checking The Direction Of Rotation With Dry Pump; Starting The Pump - VERDER VERDERFLEX Dura 55 Series Operating Manual

7.

Operation

7.1 Pre-commissioning the pump

7.1.1 Checking the direction of rotation
with dry pump
Ensure the pump has lubricant in it.

Switch the motor on and check the direction of rotation;

then switch off immediately.
If the direction of rotation is different: swap two of the

phases (*check with electrician)

7.1.2 Starting the Pump

Risk of injury and poisoning due to pumped liquid
spraying out!
Use personal protective equipment when carrying out any
X
work on the pump.
Equipment damage due to excess pressure!
Do not operate the pump with the discharge-side fitting
X
closed.
Operate the pump only inside the tolerances specified
X
by the manufacturer (g11. Technical specifications).
Risk of injury and poisoning due to hazardous pumped
liquids!
Safely collect any leaking pumped liquid and dispose
X
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.

Pump housing lubricant level correct

(g6.7 Filling the pump with lubricant).
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.
Original instructions (en)
DANGER
WARNING
© Verder Liquids B.V
Dura 55 series - Operating manual

7.1.3 Switching OFF the pump

Risk of injury due to hot pump parts!
Use personal protective equipment when carrying out any
X
work on the pump.
Risk of dead heading and hose burst due to closed suction
or discharge!
Keep the suction and discharge side fittings opened till
X
the rotor has come to a complete stop.
Equipment damage due to sediments!
If the pumped liquid crystallizes, polymerizes or solidifies:
X
– 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).
Version 01
WARNING
Note
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