Bosch GHP 5-55 Manual Original página 28

OBJ_BUCH-2319-004.book Page 28 Thursday, September 22, 2016 3:30 PM
28 | English
Equipment category: 27
Technical file (2006/42/EC, 2000/14/EC) at:
Bosch Lawn and Garden Ltd., PT-HG/ENS-PA2,
Stowmarket, Suffolk IP14 1EY, England
Henk Becker Helmut Heinzelmann
Executive Vice President Head of Product Certification
Engineering PT/ECS
Robert Bosch Power Tools GmbH
70538 Stuttgart, GERMANY
Stuttgart, 01.01.2017
Connecting to the water supply
(see figure F)
Note: Rated output pressure can only be achieved, if the flow
rate at the water input is sufficient. The flow rate is sufficient
if a 10 litre bucket can be filled in less than 1 minute.
CAUTION: Permanent operation with lack of water at the wa-
ter input can damage the pump.
NOTE: For a sufficient water supply use a short hose with a di-
ameter not thinner than 1/2" (13 mm). Hoses longer than
10 m should have a diameter of 3/4" (19 mm). Open the wa-
ter tap completely. All connections must be tight. Clean the
water filters periodically (see chapter Maintenance).
– It is recommended to use always an external water filter
(accessory). Check water filter for tight assembly.
– If necessary, screw on an hose adapter (not supplied with
the machine).
– Connect a suitable water hose, best with 1/2" (13 mm) or
3/4" (19 mm) diameter.
– Open the water tap completely and check all connections
for tightness.
Connecting to the mains (see figure G)
NOTE: Rated output pressure is only available, if the machine
is connected to a stable mains voltage. Using a long connec-
tion cable with a thin wire cross section, an uncoiled cable
drum, operating other machines concurrently at the same cir-
cuit or voltage fluctuations outside accessible tolerances im-
pede motor starting or result in low output pressure.
Bleeding high-pressure washer and
hoses (see figure G)
NOTE: Bleed the unit each time the water hose is connected
to the water tab according the following procedure:
Leave the main switch at OFF (0) position.
Disconnect the lance from the gun.
– As soon the trigger of the gun is operated, air and water ex-
its noisily. Hold the trigger until water exits steadily from
the gun. Release the trigger.
– Reconnect the lance.
1 609 92A 3EV | (22.9.16)
– Switch on the machine for operation.
– Press the safety release and operate the trigger of the gun.
Use with alternative water sources
(see figure I)
This high-pressure washer will self prime and can draw water
from water tanks and natural water sources. It's IMPORTANT
that the water is clean and both BOSCH inlet filter and exter-
nal filter are clear and fitted to the machine (see chapter Main-
tenance).
Open tanks/containers and natural
water sources (see figure I)
Use the Self Priming accessory kit comprising:
– Inlet strainer with non return valve
– 3 m reinforced supply hose
– Universal coupling to the pressure washer
This enables the pressure washer to draw water up to 0.5 m
above the water level in the source in approximately 25 – 50
seconds.
Submerge the 3 m hose in water to displace
the air. Connect the 3 m supply hose to the
pressure washer ensuring that the inlet strain-
er remains submerged in the water source.
Run the pressure washer with the lance discon-
nected until a steady flow of water appears
from the high pressure hose. Stop if this has not been
achieved within 25 – 50 seconds and check all the connec-
tions. Switch off and connect the lance and nozzle to operate.
It is important to ensure that all hose and coupling connec-
tions are of good quality, air tight and that all washers are in
good condition and correctly seated in place. Failure to do so
may affect the self priming performance.
Water Tanks with outlet connections
(see figure I)
When connecting the pressure washer to a water tank with a
suitable tap outlet, first connect the supply hose (not provid-
ed) to the tank outlet, open the tap to allow the water to dis-
place all the air in the hose and then connect to the pressure
washer.
Use of detergents (see figure J)
Only use detergents recommended by the manufacturer.
Comply with the application, disposal and warning instruc-
tions of the detergent manufacturers.
Pull out the suction hose at the rear and put it into a bottle
withdetergent (not supplied with).
Pull the nozzle of the lance into low pressure position.
Switch on the gun. After a few seconds foam exits at the nozzle.
Ajust the knob at the rear to dose the quantity.
Turn the nozzle left/right to adjust the water jet.
Bosch Power Tools