Operation; Commissioning; Care And Maintenance; Danger Of Ffreezing - Metabo HWW 3000/20 G Manual De Instrucciones

Note: 
3
The suction line does not need to
be filled, the pump is self-priming. How-
ever, depending on length and diameter
of the suction line it may take some time
until pressure has built up.
1. Remove the water filler plug, com-
plete with gasket.
2. Slowly pour in clear water, until the
pump is filled.
3. To reduce the time needed for prim-
ing you can also fill the suction line.
4. Replace the water filler plug, com-
plete with gasket.
5. Open pressure line (open tap or
spray nozzle) for any air to escape
during priming.
6. Start pump (see "Operation").
7. Turn pump OFF when water runs
out steadily.

6. Operation

Pump and suction line must be con-
nected and filled (see "Prior to Opera-
tion").
Caution! 
A
The pump must not run dry.
Ensure there is always sufficient
pumping medium (water) available.

If the motor does not start, no pres-
sure is built up or similar effects are
evident, switch the pump OFF – and
try to resolve the fault (see "Trouble
Shooting").
Pump characteristic curve
The pump characteristic curve shows
which pump capacity is possible in
dependance on the delivery head.
(Pump characteristic curve for 0.5 m
suction head and 1" suction hose.)
(Pump characteristic curve for 0.5 m
suction head and 1" suction hose.)
6.1

Commissioning

3 
Note:
The pressure switch
 starts the pump when, by drawing
water, the water pressure in the tank
falls below the cut-in pressure;
 stops the pump when the cut-out
pressure is reached.
3 Note: 
In the tank is a rubber bag, factory-
charged with air ("precharge pressure");
this permits the drawing of small amounts
of water without the pump starting up.
1. Plug power cable in.
2. Open pressure line (open tap or
spray nozzle).
3. Check to see that the water comes
out!

7. Care and Maintenance

Danger! 
A
Prior to all servicing:
1. Turn OFF.
2. Unplug.
3. Ensure that pressure is relieved
from the pump and connected
accessories.
Service and repair work other than
described here must be left to quali-
fied specialists.
7.1

Danger of Ffreezing

Caution! 
A
Frost damages the pump and
accessories, as both always contain
water!

When there is danger of freezing,
dismount the pump and accessories
and store at a frost-free location
(see below).
7.2 Pump Dismounting and
Storing
1. Turn pump OFF and unplug.
2. Open pressure line (open tap or
spray nozzle) and drain water com-
pletely.
3. Completely drain pump and tank; to
do so remove the drain plug from
the underside of the pump.
4. Disconnect suction and pressure
lines from the pump.
5. Store pump in a frost-free location
(at least 5 °C).

8. Trouble Shooting

Danger! 
A
Prior to all servicing:
1. Turn OFF.
ENGLISH
2. Unplug.
3. Ensure that pressure is relieved
from the pump and connected
accessories.
8.1

Locating the Fault

Pump does not run:
 No mains voltage.
• Check cables, plug, outlet and
mains fuse.
 Mains voltage too low.
• Use only extension cables with
sufficient lead cross section (see
"Technical Specifications").
 Motor overheated, motor protection
relay tripped.
• After cooling off the pump will
start again.
• Ensure sufficient ventilation, keep
vent slots clear.
• Observe max. temperature of the
pumped medium.
 Motor hums but does not start.
• With the motor turned OFF, put
screwdriver or similar through the
fan cover's ventilation slots and
turn the fan.
 Pump blocked or out of order.
• Disassemble pump and clean.
• Clean diffusor, replace if neces-
sary.
• Clean impeller, replace if neces-
sary.
Pump does not prime correctly or
runs very noisily:
 Lack of water.
• Ensure there is a sufficient water
supply.
 Suction line leaky.
• Seal suction line, tighten screw
fittings.
 Suction head too high.
• Observe max. suction head.
• Install check valve, fill suction line
with water.
 Suction strainer (optional acces-
sory) blocked.
• Clean, replace if necessary.
 Check valve (optional accessory)
blocked.
• Clean, replace if necessary.
 Water leaks between motor and
pump, Duocone seal worn.
• Replace Duocone seal.
 Pump blocked or out of order.
• see above.
Pressure too low:
 Suction line leaky or too much suc-
tion head.
• see above.
 Pump blocked or out of order.
• see above.
 Pressure
switch
adjusted.
• Check cut-in pressure and cut-
out pressure, adjust if necessary.
incorrectly
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