Commissioning; Filling And Venting - Wilo -VeroLine IPL Einbau- Und Betriebsanleitung

8

Commissioning

Safety
8.1

Filling and venting

Installation and operating instructions Wilo-IPL...N/DPL...N
DANGER! Risk of fatal injury!
Failure to install safety devices on the motor, terminal box or on
the coupling can cause electrical shock or contact with rotating
parts, potentially resulting in life-threatening injuries.
• Before commissioning and after maintenance work, all safety
devices (such as terminal box covers or coupling covers) that were
removed must be reinstalled.
• The tools used during maintenance work on the motor shaft (such
as an open-end wrench) can be flung out if they come into contact
with rotating parts and cause serious or even fatal injuries.
• The tools used during maintenance work must be removed com-
pletely before the pump is started up.
• Keep a safe distance during commissioning.
• Always wear protective clothing, protective gloves and protective
goggles when working.
WARNING! Risk of burns or freezing to the pump when body parts
come into contact with the pump!
Depending on the pump or system operating conditions (fluid tem-
perature), the entire pump can become very hot or very cold.
• Keep a safe distance during operation!
• In the case of high water temperatures and system pressures, allow
the pump to cool down before all work.
• Always wear protective clothing, protective gloves and protective
goggles when working.
• The area near the pump unit must be kept free of contaminants to
eliminate the chance of a fire or an explosion due to contact of con-
taminants with hot unit surfaces.
• Prime and vent the unit correctly.
CAUTION! Risk of damaging the pump!
• Protect the terminal box from any water escaping when bleeding.
CAUTION! Risk of damaging the pump!
Running dry will destroy the mechanical seal.
• Make sure that the pump does not run dry.
• To avoid cavitation noises and damage, a minimum intake pressure
must be guaranteed at the suction port of the pump. This minimum
intake pressure depends on the operation situation and the duty point
of the pump, and must be defined accordingly. The main parameters
for defining the minimum intake pressure are the NPSH of the pump
at its duty point and the vapour pressure of the fluid.
• Bleed the pumps by loosening the venting screw (Fig. 1/2/3, Item 9).
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.
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.
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