Wilo Helix EXCEL 22 Série Notice De Montage Et De Mise En Service page 50

English
Access lock
In order to lock the pump settings, it is possible
to use the « Access lock ».
To activate or deactivate it, proceed as follows:
• Put the switch 2 on ON position (Fig. A1, item 1).
The <7.0.0.0> menu is called up.
• Turn the encoder to activate or deactivate the
locking. The current state of the locking is repre-
sented with the following symbols:
• Return the switch 2 on OFF position (Fig. 4, item
S). The display returns to the status page.
8.3.6 Configurations
NOTE: If the pump is delivered as separate part,
not integrated into a system we mounted, the
standard configuration mode is
« Speed control ».
« Speed control » mode (Fig. 1, 2)
Setting of the frequency by hand or external
control.
• For the starting up, we recommend to set the
motor speed at 2400 RPM.
« Constant pressure » mode (Fig. A2, A3, A9)
Regulation with a pressure sensor and setting
point (internal or external).
• The addition of a pressure sensor (with tank;
sensor kit delivered as accessories) allows a
pressure regulation of the pump (with no water
in the tank, pressurize the tank to a pressure 0.3
bar less than the pressure regulation of the
pump).
• The accuracy of the sensor shall be ≤ 1% and it is
used between 30 % and 100 % of the measuring
scale range. The tank must have a useful volume
of 8L minimum.
• For the starting up, we recommend a pressure set
value at 60% of its maximum pressure.
« P.I.D. control » mode
Regulation with a sensor (temperature, flow...) by
P.I.D.control and setting point (internal or exter-
nal).
50
Lock active: Parameters are locked,
the access to menus is allowed only
on reading.
Lock inactive: Parameters can be
changed, the access to menus is allo-
wed for setting.
9. Maintenance
All servicing should be performed by an
authorized service representative!
WARNING! Electrical shock hazard!
Dangers caused by electrical energy must be
excluded.
All electrical work must be performed after the
electrical supply has been switched off and
secured against unauthorized switching.
WARNING! Risk of scalding!
At high water temperatures and system pressure
close isolating valves before and after the pump.
First, allow pump to cool down.
- These pumps are maintenance free.
- If needed, mechanical seal could be easily
replace thanks to its cartridge seal design. Insert
its adjusting wedge in its housing (Fig. 6) once
mechanical seal position is set.
- For pumps equipped with one grease feeder (Fig.
7, ref. 1) respect lubrication frequences men-
tioned on sticker glued on lantern part (ref.2).
- Always keep the pump perfectly clean.
- Pumps which are not being used during periods
of frost should be drained to avoid damage:
Close the guard valves, open completely the
drain-priming plug and the air bleed screw.
DANGER! Danger of death !
The rotor inside the motor is subjected to a per-
manent magnetic field and represents a severe
danger for the persons with a pacemaker. The
disregard gives death or serious injury.
• Don't open the motor!
• Do the dismantling / reassembly of the rotor in
purposes of repair only by the after-sales servi-
ce!
WILO SE 03/2013