Installing The Piping; Operation; Pre-Commissioning The Pump; Checking The Direction Of Rotation With Dry Pump - VERDER VERDERFLEX Dura 80 Operating Manual

6.10.1 Installing the piping

1. Check all fasteners are tightened (g11. Technical
specifications).
2. Ensure that the 1/4 turn flange is correctly indexed.
3. Remove the transport and sealing covers from the pump.
4. Before connecting any piping to the pump, ensure that
the hose is properly secured by running the pump dry for
10–20 revolutions in both directions.
5. Run the pipes in a continuous upward or downward slope
to avoid air pockets.
6. Connect the piping.
7. Make sure that the nozzle loadings on flanges are not
exceeded.

Figure 20. - Nozzle loadings on flanges

8. Consider the maximum nozzle loadings on flanges in the
following table:
Pump Type Maximum Nozzle Loadings (N)
F1
Dura 80 1500 N

Table 6. - Maximum nozzle loadings on flanges

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

DANGER
Risk of injury and poisoning due to pumped liquid
spraying out!
Use personal protective equipment when carrying out any
X
work on the pump.
Original instructions (en)
F2, F3 M1, M2, M3
1000 N 145 Nm
© Verder Liquids B.V
Dura 80 - Operating manual
Equipment damage due to excess pressure!
Do not operate the pump with the discharge-side fitting
X
closed.
Operate the pump only within 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 your environmental policies 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

(g6.9 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.

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 open till the
X
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.
Version 00
WARNING
WARNING
Note
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