Decommissioning; Maintenance - Wilo -VeroLine-IPH-O Einbau- Und Betriebsanleitung

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8.2

Decommissioning

9

Maintenance

Safety
28
• Open the stop valve on the suction side.
• Fill the system with water and vent it.
• Vent the pump using one of the venting screws until fluid comes out.
Then close the venting screw again.
WARNING! Danger due to extremely hot or extremely cold pressur-
ised fluid!
Depending on the temperature of the fluid and the system pres-
sure, when the venting screw is opened completely, extremely hot
or extremely cold fluid in liquid or vapour form may escape or shoot
out at high pressure.
• Always exercise caution when opening the venting screw.
CAUTION! Risk of damaging the pump!
Running dry will destroy the mechanical seal.
• Make sure that the pump does not run dry.
• Switch on briefly and check whether the direction of rotation corre-
sponds to the arrow on the pump housing. If the direction of rotation
is incorrect, proceed as follows:
• Swap the 2 phases on the motor terminal board (e.g. L1 for L2).
• Switch on the pump.
• Open the stop valve on the pressure side.
• Completely vent the pump and unit again.
NOTE
To avoid premature wear and resultant defects in the pump,
a minimum volume flow of 10–15% of the pump's rated volume flow
must be guaranteed.
NOTE
When pumping out of a tank, ensure that the liquid level is always
high enough above the suction port of the pump so that the pump
does not run dry. The minimum intake pressure must be observed.
WARNING! Danger of injury!
If the pump/system is installed improperly, liquid may be ejected
during commissioning. Individual components may also become
loose.
• Keep a safe distance from the pump during commissioning.
• Wear protective clothing and gloves.
• Close both stop valves. If necessary, drain the pump.
• Prime and vent the pump before any recommissioning.
Have maintenance and repair work carried out by qualified skilled
personnel only!
It is recommended to have the pump serviced and checked by Wilo
after-sales service.
DANGER! Risk of fatal injury!
There is risk of fatal injury from electrical shock when working on
electrical equipment.
• Work on electrical equipment may only be done by electricians
approved by the local electricity supplier.
• Before working on electrical equipment, switch it off and secure it
against being switched on again.
• Follow the installation and operating instructions for the pump,
level control device and other accessories.
WILO SE 11/2017