en – Original instructions
e-IXPS - Installation, Operation and Maintenance Instructions
25
Start up
1.
Shut off the discharge on-off valve almost completely.
2.
Fully open the suction on-off valve.
3.
Start the unit.
4.
Gradually open the discharge on-off valve and adjust it until the duty point is reached, as
soon as the motor reaches full speed
5.
With the unit in operation, check that:
•
No liquid is leaking from the unit or piping system
•
The nominal pressure is higher than the maximum pressure delivered by the unit
•
The current absorbed is within the rated limits.
Note: an automatic restart may only take place if it is made sure that the pump remains filled
with liquid when it is at a standstill.
Operation limits:
Flow min. / max.:
If no other data are given in the performance curves or data sheet, the following is valid:
Q
min
= 0.1 x Q
BEP
for short term operation
Q
min
= 0.3 x Q
BEP
for continuous operation
Q
max
= 1.2 x Q
BEP
for continuous operation
Q
BEP
= Flow in best efficiency point
5.5
Stopping
1.
Close the discharge on-off valve: If the discharge line is equipped with a check or non-
return valve, the on-off valve can stay open.
2.
Stop the unit.
3.
Check that the motor stops and that it does not turn in the opposite direction.
4.
Gradually re-open the valve and check that the motor remains still.
1 On the condition that NPSH Application > (NPSH Pump + 0,5 m)
