050408.01
7
Pressurized-water system PFWS
5
Maintenance
Cleaning the Water Filter
• Unscrew and remove the cover (drawing 6).
• Clean the filter element thus exposed.
• Refit the cover.
Checking and Adjusting the Pressure Switch (drawing 7)
Switch on pressure:
• Open a tap a quarter of a turn only. As the water runs out slowly
the pressure will reduce. Now watch the manometer for the pres-
sure at which the pump is switched on.
Increase switch-on pressure : Turn nut 2 to the right.
Decrease switch-on pressure : Turn nut 2 to the left.
Switch-off pressure:
• Leave the tap open quarter of a turn, so that the water pressure in
the tank increases slowly. Now watch the manometer to read the
pressure at which the pump is switched off.
Increase switch-off pressure: Turn nut 1 to the right.
Decrease switch-off pressure: Turn nut 1 to the left.
N.B. Nut 1 adjusts the difference between switch-on and switch-off
pressure. After resetting the switch-on pressure, the switch-off pres-
sure must also be adjusted again.
Checking and pressurizing Pre-pressure and Air Cushion
• Remove the protective cap, turn
to the left and check pressure
with a tyre air pressure meter.
Reduce pressure: Push the Schrä-
der valve pin in; air will now es-
cape.
Increase pressure: Connect a car
tyre pump to the valve and bring
the air cushion to the required pressure.
Replacing the Membrane
Under normal circumstances the membrane should never need
replacement. However if it does leak, replace as follows:
- Ensure that the whole system is de-pressurized.
• Remove the hose between pump and T-piece, remove the 6 bolts
holding the flange to the top of the tank and remove flange com-
plete with T-piece.
• Remove the old membrane, refit a new one and reassemble in
reverse order to the above.
ENGLISH
Type
:
PFWS1219
PFWS2419
Electric motor,
type
:
Permanent magnet DC motor
Voltage
:
12 V DC
24 V DC
Current at 0.7 Bar (10 psi)
:
15 Amp
8 Amp
Pump,
type
:
Self-priming 5 valve diaphragm pump
Capacity at 2 Bar (30 psi)
:
20 litres/min (4.4 Imp.Gallon)
Max. pressure
:
4.2 Bar (61 psi)
Maximum riser height
:
1.8 m (6 ft)
Filter,
type
:
In-line
Mesh size
:
50 Mesh
Pressure switch
Settings,
Switch-on pressure
:
1.4 Bar (20 psi)
Switch-off pressure
:
2.8 Bar (40.6 psi)
Range,
Min. switch-on pressure
:
1 Bar (14.5 psi)
Max. switch-off pressure
:
5 Bar (72.5 psi)
Manometer
Meter range
:
0 to 6 Bar (0 - 87 psi)
Pressure tank
Capacity
:
19 litres (4.2 Imp.Gallon)
Pre-pressure, air cushion
:
1.2 Bar (17.4 psi)
Connections,
Hose
:
19 mm (3/4”)
Water temperature
:
0 to 50 degrees C. (32 to 122 degrees F.)
Weight
:
9.5 kg (20.9 lb)
6
Technical data
