Wilo COR-1HELIX VE5203/3/VR, Инструкция по установке и эксплуатации

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English
Installation and operating instructions Wilo-Economy CO-1, CO/T-1;-Comfort-Vario COR-1 31
• With system pressures greater than PN16, the
manufacturer’s filling instructions given in the
attached installation and operating instructions
must be observed for the diaphragm pressure ves-
sel.
CAUTION!
Excessive supply pressure (nitrogen) in the dia-
phragm pressure vessel can lead to damage or
destruction of the vessel and thereby also to
personal injury.
The safety measures for the handling of pressu-
rised vessels and technical gases must be
observed.
The pressure specifications in this documenta-
tion (Fig. 5) are given in bar. If other units of
pressure measurement are used, always be sure
to convert the figures correctly.
• In the case of an indirect connection, check that
the water level in the break tank is adequate, or
with a direct connection, that the inlet pressure is
adequate (minimum inlet pressure 1 bar)
• Correct installation of the right dry-running pro-
tection (section 7.2.4.)
• In the break tank, position the float switch or elec-
trodes for protection against low water so that the
system is switched off at the minimum water level
(section 7.2.4)
• Checking the direction of rotation of pumps with
a standard motor (without integrated frequency
converter): switch on briefly and verify that the
direction of rotation of the pumps (Helix V, MVI or
MHI) corresponds to the arrow on the pump hous-
ing. In the case of MVIS type pumps, the correct
direction of rotation is signalled by the operating
lamp in the terminal box lighting up. Swap two
phases if the direction of rotation is incorrect.
DANGER!
Switch off the system's main switch before
swapping the phases.
• Check the motor protection switch in the control
device to make sure that the right nominal current
is set according to the specifications on the motor
rating plate. Follow the installation and operating
instructions of the control device when doing so.
• The pumps should only briefly run against the
closed gate valve on the pressure side.
• Check and set the operating parameters required
on the control device according to the attached
installation and operating instructions.
With systems of types CO-1.../ER and
CO/T-1.../ER you may need to check and correct
the setting of the pressure switch. This setting is
tuned at the factory for the optimum volumetric
flow rate for operation without supply pressure.
DANGER!
Contact with live parts can cause death! Use an
insulated screwdriver when setting the pressure
switch.
Proceed as follows when setting the pressure
switch:
Use of pressure switch type FF4.... (Fig. 3a)
• Open the pressure switch cover
• Open the gate valve on the discharge side and one
tap
• Set the deactivation pressure using the adjusting
screw (item 19 in Fig. 3a). The pressure can be
read in bar on the dial (item 24 in Fig. 3a). Factory
setting is as shown on the attached acceptance
test certificate.
• Slowly close the tap
• Monitor the deactivation point on the pressure
gauge and correct it if necessary by turning the
adjusting screw (item 19 in Fig. 3a)
• Slowly open the tap
• Set the start-up pressure using the adjusting
screw (item 20 in Fig. 3a). The pressure difference
can be read on the dial (item 25 in Fig. 3a). (The
factory setting for the pressure difference p
between deactivation and start-up pressure is
about 1.0 bar.)
• Close the tap again.
• Put the pressure switch cover back in place.
The pressure switch of type FF4 is designed as a
single-pole two way switch. The switch contact is
wired at the factory to close when pressure drops
and is set to
pressure boosting mode (see instal-
lation and operating instructions for ER switch-
gear). If the pump needs to be run in
fire
extinguishing system mode (for setting n ER
switchgear, see the attached installation and
operating instructions),
a pressure switch is
needed which opens its contact when pressure
drops and closes when the target pressure is
reached (i.e. the pump runs with the switch con-
tact open). With the pressure switch of type FF4,
the switching logic can be changed by moving the
connecting cable in the pressure switch from
Contact 2 to Contact 4 (Fig. 3a, 26 and 27). After
this connection is swapped around, the contact
opens when pressure drops and closes when the
target pressure is reached.