Bosch 2 609 390 308 Original Instructions Manual page 7

OBJ_BUCH-479-003.book Page 7 Thursday, August 3, 2017 10:43 AM
 Keep the water pump out of the reach of children.
 The safety warnings and working instructions for the
diamond drill and the accessories being used are to be
strictly observed!
 Observe valid national and international standards.
Product Description and
Specifications
Please fold out the fold-out page with the illustration of the
water pump and leave it open while reading the instruction
manual.
Intended Use
The water pump is intended exclusively for the water supply
of diamond drills suitable for wet drilling.
Product Features
The numbering of the product features refers to the illustra-
tion of the water pump on the graphics page.
1 Pump handle
2 Filling sieve
3 Pump
4 Safety valve
5 Pressure gauge
6 Button of the pressure relief valve
7 Hose connection of the water pump
8 Connector of the connection hose
9 Hose connection for water supply
10 Connection hose
11 Pressure container
12 Filling scale
13 Pump cams
14 Pump lid
15 Piston sealing ring
16 Pump sealing ring
Accessories shown or described are not part of the standard deliv-
ery scope of the product. A complete overview of accessories can
be found in our accessories program.
Technical Data
Water Pump
Article number
Safety valve
Max. filling capacity
Total capacity
Max. operating overpressure
Max. flow rate
Water temperature
Full pressure change (0–6 bar)
Hose length
Weight according to
EPTA-Procedure 01:2014
Bosch Power Tools
Operation
Initial Operation
Filling the Water Pump
Press the button of the pressure relief valve 6 until the
manometer 5 indicates that the water pump is pressure-free.
Push the pump handle 1 down to the stop. Unscrew the pump
3 with the handle, turning in anticlockwise direction.
Engage the pump handle 1 into the cams 13 of the pump and
lift the pump 3 out.
Remove the filling sieve 2 out of the housing. Fill the water
pump with clean water via the filling sieve 2.
Observe the maximum filling capacity of the pressure con-
tainer 11. Check the water level, if required (see "Checking
the Water Level", page 7).
Remove the filling sieve 2 and reinsert it into the housing. Re-
insert the pump 3 and firmly retighten it turning in clockwise
direction.
Connecting the Water Pump
Insert the connector 8 into the hose connection 7 of the water
pump. Check the locking by pulling on the connection hose.
Shut the water cock on the diamond drill. Insert the cock
connector of the diamond drill into the hose connection 9 for
the water supply. Check the locking.
Pressurising the Water Pump
Turn the pump handle 1 so that it does not engage into the
cams 13 of the pump. Apply pumping action via the pump
handle until the manometer indicates 6 bar.
The water pump is ready for operation.
The pressure supply is sufficient for approximately one con-
tainer filling. When the water pressure is no longer sufficient
during drilling, apply further pumping action with the pump
handle 1.
Emptying the Water Pump
Empty the water pump each time after using.
Press the button of the pressure relief valve 6 until the
manometer 5 indicates that the water pump is pressure-free.
Push the pump handle 1 down to the stop. Carefully turn the
pump 3 via the pump handle in anticlockwise direction and
allow the remaining pressure to escape.
Completely unscrew the pump 3 and remove it out of the
2 609 390 308
pressure container 11. Empty the pressure container, hang

the water pump upside down at a secure location and allow
the pressure container to dry.
l 10
l 13.7
Working Advice
bar 6
Checking the Water Level
l/min 4.42
Press the button of the pressure relief valve 6 until the
°C 0...+50
manometer 5 indicates that the water pump is pressure-free.
Max. 5000 load
change
m 3.5
kg 6.1
English | 7
1 609 92A 3ZG | (3.8.17)