6 Commissioning/Start-up/Shutdown
33 of 68
Multitec A SX
After five minutes of
operation
The leakage can be reduced.
1.
Tighten the nuts of the gland follower by 1/6 turn.
2.
Monitor the leakage for another five minutes.
Excessive leakage:
Repeat steps 1 and 2 until the minimum value has been reached.
Not enough leakage:
Slightly loosen the nuts at the gland follower.
No leakage:
Switch off the pump set immediately!
Loosen the gland follower and repeat start-up.
Checking the leakage
After the leakage has been adjusted, monitor the leakage for about two hours at
maximum fluid temperature.
Check that enough leakage occurs at the gland at minimum fluid pressure.
6.1.7 Shutdown
CAUTION
Heat build-up inside the pump
Damage to the shaft seal!
▷
Depending on the type of installation, the pump set requires sufficient after-
run time – with the heat source switched off – until the fluid handled has
cooled down.
ü
The shut-off element in the suction line is and remains open.
1.
Close the shut-off element in the discharge line.
2.
Switch off the motor and make sure the pump set runs down smoothly to a
standstill.
NOTE
If the discharge line is equipped with a non-return or check valve, the shut-off
element may remain open as long as there is some back pressure.
For prolonged shutdown periods:
1.
Close the shut-off element in the suction line.
2.
Close the auxiliary connections.
If the fluid handled is fed in under vacuum, also supply the shaft seal with
barrier fluid during standstill.
CAUTION
Risk of freezing during prolonged pump shutdown periods
Damage to the pump!
▷
Drain the pump and the cooling/heating chambers (if any) or otherwise protect
them against freezing.
Summary of Contents for Multitec A SX
Page 1: ...Sprinkler Pump Multitec A SX Installation Operating Manual ...
Page 67: ......
