Wilo Wilo-HiMulti 3 H Series - Page 22

(Routine 1)
Setting switch-off pressure
Domestic
water system
switches off
Remove cover of the pressure switch
Close shut-off device on the pressure
side
Establish electrical power supply and
observe readin
g
on
p
ressure
g
au
g
e
Turn switch-off pressure adjusting screw
anticlockwise until a clicking sound can be heard
Depressurise the domestic water
system on the consumer side: Open
shut-off device on the pressure side
and open nearest draw-off point
(Routine 2)
Check and adjust gas supply
pressure of the diaphragm vessel
Depressurise diaphragm
container on the water side:
- Open shut-off device on
the pressure side and open
a draw-off point
- Note remaining water
column and drain domestic
water system completely if
necessar
y
(Routine 3)
Increasing the difference between
switch-on pressure and switch-off
pressure
Close shut-off device on the
p
ressure side
Close shut-off device on the
p
ressure side
Slowly open shut-off device on
the pressure side and observe
pressure gauge
Turn pressure difference
adjusting screw clockwise until a
clicking sound can be heard
Remove cover of the pressure
switch
Shut off electrical power supply
and secure it to prevent it from
being restarted without
hi i
Shut off electrical power supply
Check container pressure on gas
filling valve and top up or vent
gas if necessary
Shut off electrical power supply and
secure it to prevent it from being
restarted without authorisation
Shut off electrical
power supply and
secure it to prevent it
from being restarted
w
ithout authorisation
Switch-off
pressure
setpoint
exceeded
Setpoint of switch-on
pressure reached
Pressure gauge of
domestic water
system displays 0
bar
Domestic water
system does not
s
wi
tc
h
o
ff
Turn switch-off
pressure adjusting
screw clockwise
Slowly open shut-
off device on the
pressure side and
observe pressure
g
au
g
e
Shut off electrical
power supply and
secure it to prevent
it from being
restarted without
authorisation
Shut off electrical
power supply and
secure it to prevent it
from being restarted
without authorisation
Switch-off
pressure
setpoint
reached
English
Installation and operating instructions Wilo domestic water systems HiMulti3..H.. /HMHI/HWJ 29