Wilo COE-2 MHIL Série Notice De Montage Et De Mise En Service page 25

Complete the following steps:
Turn the change-over switch for 1 pump to "MANU"
Release the change-over switch when the desired switch-off
pressure for the pump is reached (pressure gauge reading).
Turn the change-over switch
for the pump to "AUTO" and hold
it there to check the settings.
Settings OK.
Put the cap
back on.
Remove the
cap from
the PR2
contactor.
Commissioning.
Installation and operating instructions Wilo-COE-2 MHIL
Remove the cap on the PR1 contactor.
Turn the nuts (positions 1 and 2)
fully clockwise without locking them.
and hold it there to increase the system pressure.
Turn the nut (position 1)
counter-clockwise until you hear it click.
Open the discharge valve to decrease
the pressure until the desired activation level for
the pump is reached (pressure gauge reading).
Turn the nut (position 2) counter-clockwise.
If it clicks
Inaccurate
settings.
See
"Settings"
and adjust.
Settings OK.
If it does not click
Check your duty
points and the tank
pre-charge pressure
(it must be 0.3 bar
below the pressure that
activates the pumps).
If needed, select 2 new
points and adjust the
pre-charge pressure.
English
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