Manual Metabo HWW 3300-25 G (page 8 of 52) (English, German, Dutch, Danish, French, Italian, Polish, Portuguese, Swedish, Spanish, Norwegian, Finnish)

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ENGLISHen

When using universal swivel cou-

plings (bayonet couplings), only

use versions with an additional

securing ring to ensure safe seal-

ing.

See page 2. The illustrations serve as examples

for all devices.

1 Water drain screw

2 Pressure switch *

3 Pressure gauge (water pressure) *

4 Suction connection

5 Water filling screw

6 Pressure connection

7Pump

8 On/off switch

9 Air valve for pilot pressure *

10 Pressure vessel *

* depending on model

6.1 Setting pilot pressure

Set the pilot pressure before initial operation. See

section 9.4.

6.2 Installation

The device must be positioned on a horizontal, flat

surface that is suitable for the device weight with

water filling.

To avoid vibrations, the device should not be

bolted on but rather should be positioned on a

resilient base.

The place of installation should be well ventilated

and protect against weather influences. Protect

against frost - see section 8.2.

For operation in garden ponds and

swimming pools, the device must

be installed in a flood-proof loca-

tion and secured against falling in.

Additional statutory requirements

must be taken into consideration.

6.3 Connecting suction line

Caution! The suction line must be installed

such that no mechanical or twisting forces

are exerted on the pump.

Caution! Use an intake filter to protect the

pump against sand and contamination.

Caution! The check valve is absolutely

necessary to prevent the water from draining

when the pump is switched off. We recommend

the installation of check valves at the intake

opening of the suction hose and at the suction

connection (4) of the pump. Depending on the

model, a check valve may already be integrated

(see section 13. Technical Specifications).

Seal all screw-coupling with thread sealing tape.

Leaks result in air intake and reduce or prevent the

water intake.

The suction line should have an inside diameter of

at least 1" (25 mm); it must be kink- and vacuum-

resistant.

The suction line should be as short as possible

because the longer the line length, the lower the

conveying capacity.

The suction line should rise uniformly towards the

pump to prevent air inclusions.

A sufficient water supply must be guaranteed and

the end of the suction line should always be under

water.

6.4 Connecting the discharge line

Caution! The discharge line must be installed

such that no mechanical or twisting forces

are exerted on the pump.

Seal all screw-couplings with thread sealing tape

to prevent water discharge.

All components of the discharge line must be pres-

sure-resistant and installed correctly.

Danger! If non-pressure-resistant compo-

nents are installed, or assembly is incorrect,

the discharge line can burst during operation. Inju-

ries are possible if highly pressurised fluids are

ejected!

6.5 Connection to a pipe network

To reduce vibration and noises, the device should

be connected with flexible hose lines to the pipe

network.

6.6 Mains connection

Danger! Risk of electric shock!

Never operate the device in a

wet environment and only under

the following conditions:

- Connect only to an earthed outlet

that is properly installed, earthed

and tested.

- Mains voltage, mains frequency

and fuse protection must corre-

spond to those stated in the

'Technical Specifications'.

- The device must be supplied via

a residual-current device (RCD)

with a rated residual current of

max. 30 mA.

- The electrical connections must

not be under water and must be

located in a flood-proof area. The

connections must be splash-

proof for outdoor use.

- Extension cables must have

sufficient conductor cross

sections. Unroll cable reels fully.

- National installation specifica-

tions must be observed.

6.7 Filling pump and suction

Caution! In the case of a new connection,

water loss or air intake, the pump must be

filled with water. Operation of the pump without

water filling will destroy it!

- Unscrew water filling screw (5) including gasket.

- Slowly pour in clean water until the pump is filled.

- Screw in water filling screw (5) with gasket again.

- Open the discharge line (open water tap or spray

nozzle) so that air can escape during suction.

- Switch on the device (see section 7.).

- When water emerges evenly, the device is ready

for operation.

Note:

The suction line does not need to be filled

because the pump is self-priming. Depending on

the length and diameter of the line, however, it may

take some time until pressure is built up. To

shorten the suction time: install a check valve at

the intake opening of the suction hose and fill the

suction line too.

Caution! The pump and suction line must be

connected and filled (see section 6.).

Caution! The pump must not be allowed to

run dry. There must always be sufficient

conveying medium (water) available.

If the pump is blocked by foreign bodies or the

motor is overheated, a protective circuit shuts

down the motor.

7.1 Using the device

Pump

(device designation P...)

Functional principle: the device runs as long as the

on/off switch (8) is activated.

Danger! If the discharge line is closed, run the

pump for a maximum of 5 minutes because

otherwise overheating of the water in the pump can

cause damage.

1. Insert mains plug.

2. Turn on at switch (8).

3. Open the discharge line (open water tap or

spray nozzle).

4. Check that water emerges!

5. When work is complete, turn off the device at

the switch (8).

Domestic water system

(device designation HWW...)

Functional principle: the device switches on when

the removal of water causes the water pressure to

fall below the switch-on pressure; it switches off

again when switch-off pressure is reached. The

pressure vessel contains a rubber bellows, which

is under air pressure (pilot pressure) when deliv-

ered; this permits the removal of small volumes of

water without the pump starting up.

1. Insert mains plug.

2. Turn on at switch (8).

3. Open the discharge line (open water tap or

spray nozzle).

4. Check that water emerges!

Danger! Prior to all servicing:

- Unplug mains cable.

- Ensure that the device and connected accesso-

ries are depressurised.

- Repair and maintenance work other than

described in this section should only be carried

out by qualified specialists.

8.1 Regular maintenance

- Check device and accessories, in particular,

electrical and pressurised components, for

damage and repair if necessary.

- Check suction and discharge lines for leaks.

- If the conveying capacity decreases, clean intake

filter and filter element (if installed) and replace if

necessary.

- Check the pilot pressure of the pressure vessel

(10) (depending on features) and increase it if

necessary (see section 9.4 Increasing pilot pres-

sure).

8.2 Danger of frost

Caution! Frost (< 4 °C) destroys the pump

and accessories as both always contain

water!

- If there is a danger of frost, disassemble pump

and accessories and store in frost-free condi-

tions (see following section).

8.3 Removing and storing device

- Turn off at switch (8). Unplug mains cable.

- Open the discharge line (open water tap or spray

nozzle), allow water to drain off completely.

- Completely drain the pump (7) and vessel (10)

by:

- unscrewing the water drain screw (1).

- Remove suction and discharge lines from

device.

- Store device in a frost-free room (min. 5 °C).

Danger!

- Prior to all servicing:

- Unplug mains cable.

- Ensure that the device and connected accesso-

ries are depressurised.

9.1 Pump is not running

• No mains voltage.

- Check on/off switch, cables, plug, socket and

mains fuse.

• Mains voltage too low.

- Use an extension cable with sufficient

conductor diameter.

• Motor overheated; motor protection relay

tripped.

- After cooling the pump will switch on again.

- Guarantee sufficient ventilation, keep air slots

free.

- Observe maximum supply temperature.

• Motor hums, but does not start.

- With the motor switched off, insert a screw-

driver or similar object through the air slots on

the motor and turn the fan impeller.

5. Overview

6. Initial Operation

7. Operation

8. Maintenance

9. Troubleshooting

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Metabo HWW 3300-25 G Manual

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