Wilo JET System 3-4-22, Iinstallation And Operating Instructions

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English
2.6 Safety instructions for installation and main-
tenance work
The operator must ensure that all installation
and maintenance work is carried out by authori-
sed and qualified personnel, who are sufficiently
informed from their own detailed study of the
operating instructions.
Work on the product/unit must only be carried out
when at a standstill. It is mandatory that the pro -
cedure described in the installation and operating
instructions for shutting down the product/unit
be complied with.
Immediately on conclusion of the work, all safety
and protective devices must be put back in posi-
tion and/or recommissioned
.
2.7 Unauthorised modification and manufacture of
spare parts
Unauthorised modification and manufacture of
spare parts will impair the safety of the product/
personnel and will make void the manufacturer’s
declarations regarding safety.
Modifications to the product are only permissible
after consultation with the manufacturer. Original
spare parts and accessories authorised by the
manufacturer ensure safety. The use of other
parts will absolve us of liability for consequential
events
.
2.8 Improper use
The operating safety of the supplied product is
only guaranteed for conventional use in accor-
dance with Section 4 of the operating instruc-
tions. The limit values must on no account fall
under or exceed those specified in the catalogue/
data sheet .
3. Transport and interim storage
When receiving the material, check that there has
been no damage during the transport. If shipping
damage has occurred, take all necessary steps
with the carrier within the allowed time
.
CAUTION!
Outside influences may cause dama -
ges.
If the delivered material is to be installed later on,
store it in a dry place and protect it from impacts
and any outside influences (humidity, frost etc.).
4. Product and accessories
4.1 Application
The domestic water system is designed to pres-
surise a water network in which the pressure is
too low or non-existent. For domestic applica -
tion.
Water supply and distribution possible from a
well, a stream or a tank.
4.2 Technical data
4.3 Description (Fig. 1, 2)
1 - Pump
2 - Filling plug
3 - Drain plug
4 - Diaphragm pressure vessel
5 - Manometer
6 - Power cable with plug
7 - Pressure contactor
8 - Pump/diaphragm pressure vessel connecting hose
9 - Pressure valve
HA- Maximum suction head
(See technical data)
Accessories (optional)
10 - Foot valve with strainer
(maximum opening width 1 mm)
11 - Suction valve
12 - Discharge valve
13 - Piping support
4.4 Motor protection
Thermal protection of motor integrated in win-
ding; automatic reset.
4.5 Dry-running protection
We recommend protecting it by a suitable device
(float switch, pressure switch, control box).
4.6 Operating principle
The pump in operation discharges water into
the diaphragm pressure vessel, compressing the
air in the tank. When the max. set pressure is
reached, the pump stops.
The air presses on the diaphragm, driving water
into the distribution pipe when a tap is opened.
When enough water is pumped off for the mini-
mum pressure to be reached, the pump starts to
deliver water and refill the diaphragm pressure
vessel.
The pressure contactor (pos. 7) automates the
operation of the domestic water system; the
pressures can be read on the pressure gauge.
The storage of water in the diaphragm pressure
vessel means that water can be pumped without
starting the pump
.
5. Installation and electrical connection
5.1 Place of installation
The domestic water system must be installed in
a shelter or in a room which is easily accessible,
normally ventilated, and protected from frost.
Max. f low rate See name plate
Max. del ivery head 7 m
Temperature range + 5 to 35 °C
Max. ambie nt temperature + 40 °C
DN suction / delivery G1»
Mains voltage 1~2 30 V, ± 10 % (50Hz)
Setting range of start /stop
pressure of the pump 3-4-22 = 1.4 / 2.8 bar
4-4-50 = 1.6 / 3.2 bar
Installation and operating instructions - Wilo-Initial JET system