Wilo Comfort-Vario COR-1***-/VR Series, Инструкция по установке и эксплуатации

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English
Installation and operating instructions Wilo-SiBoost Smart 1, Wilo-Comfort-Vario COR-1 ...-GE, .../VR 37
The scope of delivery of systems of the COR-
1…VR series includes a control device (2) which is
installed on the base frame by means of a standing
console and ready wired with the electrical com-
ponents of the system.
These installation and operating instructions
describe the overall system in general only with-
out going into a detailed description of the opera-
tion of the optional control device (see Section 7.3
and the accompanying documentation for the
control device).
High-pressure multistage centrifugal pump (1)
with three-phase AC motor (17) and frequency
converter (15):
Different types of high-pressure multistage cen-
trifugal pumps are installed in the system depend-
ing on the application and the performance
parameters required. Information on the pump
and the setting and operation of the frequency
converter is provided by the supplied installation
and operating instructions.
Pressure sensor/diaphragm pressure vessel kit
(Fig. 2):
Consists of:
• Diaphragm pressure vessel (9) with throughflow
fitting (10)
• Pressure gauge (11)
• Pressure sensor (12a)
• Electrical connection, pressure sensor (12b)
• Draining/venting (18)
• Stop valve (19)
Control device VR (2):
The VR CVV control device is used to control and
regulate some types of systems. Information on
this control device is provided by the separate
installation and operating instructions supplied
for this purpose.
• Systems of series COR-1...GE or SiBoost Smart-1…
do not have a separate control device. The system
is controlled by the pump's integrated frequency
converter (15). You can find out how to operate
and handle the pump in the respective installation
and operating instructions.
6.3 Function of the system
Systems of the Wilo-Comfort-Vario or Wilo-
SiBoost-Smart-1… series are equipped as a stand-
ard with a non self-priming horizontal or vertical
high-pressure multistage centrifugal pump with
three-phase AC motor(17) and integrated fre-
quency converter (15). The pump is supplied with
water via the inlet connection (4).
For suction mode from lower-lying tanks, a sepa-
rate, vacuum-proof and pressure-resistant suc-
tion line with a foot valve should be installed. It
should be positioned at a constant upward incli-
nation from the tank to the pump connection.
The pump increases the pressure and pumps the
water to the consumer through the pressure pipe
(5). It is switched on and off and controlled pres-
sure-dependently for this purpose. A pressure
sensor (12) (see also Fig. 2) is used to monitor the
pressure. The pressure sensor continuously meas-
ures the actual pressure value, converts it into an
analogue current signal and transmits it to the fre-
quency converter (15) of the pump or to the exist-
ing control device (2). Depending on the demand
and the control mode, the frequency converter or
control device switches the pump on or off or
changes the speed of the pump until the set con-
trol parameters are reached For a more precise
description of the control mode, control process
and setting options, refer to the installation and
operating instructions for the pump or control
device.
The diaphragm pressure vessel installed (9) (total
capacity of approx. 8 litres) exercises a certain
buffer effect on the pressure sensor and prevents
oscillation of the control when switching the
pump on and off. However, it also allows small
amounts of water to be extracted (e.g. due to
smallest leakages) from the available storage vol-
ume without switching on the pump. This reduces
the switching frequency and stabilises the operat-
ing state of the system.
CAUTION! Risk of damage!
To protect the mechanical seal or plain bearings,
do not allow the pumps to run dry. Leakages may
be caused by a pump running dry.
A device for protection against low water level
(WMS) (14) (for details, see Fig. 5a and 5b) is pro-
vided as an accessory for direct connection to the
public water supply network. It monitors the
existing supply pressure and sends a switching
signal which is processed by the frequency con-
verter or control device. The WMS kit is installed
on the pump's drainage opening (an additional
WMS connection kit (Fig. 5a, 14b) from the acces-
sories range is required here) or at an installation
point to be provided in the inlet pipe.
In the case of an indirect connection (system sep-
aration by non-pressurised break tank), a level-
dependent signal transmitter must be provided
and installed in the break tank as a dry-running
protection device. If a Wilo break tank is used, a
float switch (Fig. 9 a and 9b) is already included in
the scope of delivery. For tanks provided by the
customer, you can find various signal transmitters
for subsequent installation in the Wilo range (e.g.
WA65 float switch or low-water electrodes with
level relays).
WARNING! Health hazard!
Only materials that have no adverse effects on
the quality of the water may be used for potable
water systems!
An additional main switch is provided optionally,
which can be retrofitted on systems of the COR-
1…GE and SiBoost Smart-1.. series (see Fig 1a-1f
and Fig. 8, item 16). This main switch is used to