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Anleitung_NPHW_4100_SPK7__ 01.03.13 07:25 Seite 11
as this would delay the escape of air bubbles
from the suction pipe and impede the priming
process.
Install the intake and discharge lines in such a
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way that they do not exert any mechanical
pressure on the equipment.
The intake valve should be low enough in the
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water to ensure that if the water level falls, the
equipment will not run dry.
A leaking intake line will draw in air and therefore
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not draw in any water.
5.2 Connecting the discharge line
The discharge line (min. 19 mm (3/4")) must be
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connected to the 33.3 mm (R1IG) female thread
discharge line connector of the equipment either
directly or with the aid of a threaded nipple.
With the right couplings it is also possible, of
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course, to use a 13 mm (1/2") delivery hose. The
smaller delivery hose results in a lower delivery
rate.
During the priming operation, fully open any shut-
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off mechanisms (spray nozzles, valves, etc.) in
the pressure line so that the air can escape
without obstruction.
5.3 Electrical connections
Connect the appliance to a 230 V ~ 50 Hz socket-
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outlet with earthing contact. Minimum fuse 10
ampere.
A built-in thermostat protects the motor from
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overloading and blocking. The pump is switched
off automatically by the thermostat if overheating
occurs and is switched on again automatically
after cooling.
6. Operation
Install the equipment on a solid and level surface.
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Remove the ventilation screw (6).
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Unscrew the coarse filter screw (5) using the
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supplied wrench (9) and remove the coarse filter
(7) together with the non-return valve (8) as
shown in Figure 2. Now you can fill the pump
housing with water via the coarse filter screw (5).
Filling the intake line accelerates the intake
process.
Assemble in reverse order.
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Open the discharge line.
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Connect the mains cable.
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The priming process starts automatically –
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priming can take up to 5 minutes at maximum
suction height.
The equipment will shut down when the cut-out
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pressure of 3 bar is reached.
After a loss of pressure due to water consumption
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the equipment will cut in again automatically (cut-
in pressure approx. 1.5 bar).
7. Replacing the power cable
If the power cable for this equipment is damaged, it
must be replaced by the manufacturer or its after-
sales service or similarly trained personnel to avoid
danger.
8. Cleaning, maintenance and
ordering of spare parts
The equipment is almost completely maintenance
free. In order to ensure a long service life, however,
we recommend that you regularly check and care for
the product.
Important!
The equipment must be disconnected from the power
supply (pull the power plug) prior to performing any
maintenance.
8.1 Servicing
If the equipment becomes clogged, connect the
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discharge line to the water line and disconnect
the suction hose. Open the water line. Switch on
the equipment several times for approx.
two seconds. This should resolve the majority of
clog-related problems.
Inside the pressure tank is an expandable water
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sack and an air compartment whose maximum
pressure should lie at approx. 1.5 bar. Pumping
water into the water sack causes the sack to
expand so that the pressure in the air
compartment rises to switch-off level. If the air
pressure is too low, you should raise it. To do so,
unscrew the plastic lid from the tank and top up
the pressure to the correct level using a tyre pump
with meter at the valve.
Important: Be sure to completely empty the
water bag first using the water drain screw
(3).
Replacing the mains cable: Important:
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Disconnect the equipment from the power
supply! A defective mains cable may only be
replaced by a qualified electrician.
There are no parts inside the equipment which
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require additional maintenance.
GBR
11
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