Switching On The Pump - Wilo Yonos GIGA-N 80 Installation And Operating Instructions Manual

7.5

Switching on the pump

Installation and operating instructions Wilo-Yonos GIGA-N
Commissioning
NOTICE
The flow value that is shown on the IR-Monitor/IR-Stick display or output to the
building management system must not be used to control the pump. This value is
merely an indicator of general trends.
A flow value is not output by every pump type.
CAUTION
Risk of material damage!
An inadequate volume flow can lead to damage on the mechanical seal; the min-
imum volume flow depends on the speed of the pump.
• Ensure that the volume flow does not fall below the minimum value Q
To calculate Q :
min
Q = 10 % x Q pump x actual speed/max. speed
min max
CAUTION
Risk of material damage!
• Do not operate the pump with the shut-off devices closed.
• Only operate the pump within the permissible operating range.
Once all preparatory work has been properly completed and all necessary precautionary
measures have been taken, the pump is ready to start.
Before starting up the pump, check whether:
ƒ
Filling and venting lines are closed.
ƒ
The bearings are filled with the right amount of lubricant of the right type (if applic-
able).
ƒ
All protective devices (coupling guard, module cover etc.) are correctly attached and
tightened.
ƒ
Pressure gauges with a suitable measurement range are installed on the suction and
discharge side of the pump. Do not install the pressure gauges on the bends in the
piping. The kinetic energy of the fluid can affect the measured values at these
points.
ƒ
All blind flanges are removed.
ƒ
The shut-off device on the suction side of the pump is completely opened.
ƒ
The shut-off device in the pressure pipe of the pump is completely closed or only
slightly opened.
WARNING
Risk of injury due to high system pressure!
The power and status of the installed centrifugal pumps must be constantly mon-
itored.
• Do not connect pressure gauges to a pressurised pump.
• Install pressure gauges on the suction and discharge side.
NOTICE
It is recommended to attach a flow meter to determine the exact pump delivery rate.
ƒ
Switch on the pump: Restore power supply.
ƒ
After reaching the speed, slowly open the shut-off device in the pressure pipe and
adjust the pump to the duty point.
ƒ
While the pump is starting, vent completely via the venting device.
en
.
min
37