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Operating Instructions HD 645 / HD 650 (SX) / HD 658 / HD 690 (SX) English
19
Using the cleaner for the
first time
Electrical connection
Caution!
The voltage specified on the model
rating plate must correspond to the
voltage supplied.
Caution!
Use an extension cable whose cable
cross-section is adequate (see
“Technical Specifications”) and unreel
it completely from the cable drum.
For connected loads see model rating
plate/Technical Specifications.
Water connection/suction
feed operation
Connection to water main
Caution!
Pay attention to the regulations of the
water supply company; according to
DIN 1988, the cleaner may not be
connected direct to the public drin-
king water supply. A short-term con-
nection via a non-return valve
(Order no. 6.412-578) is allowed.
For connected loads see Technical
Specifications.
Connect a supply hose (not supplied) to
the water outlet on the cleaner and to the
water inlet (e.g. water tap).
Open water inlet.
Suctioning water from an open
container
Screw suction hose with filter
(Order no. 4.440-238) to the water
outlet.
Venting the unit
To vent the unit, unscrew the nozzle and
leave the unit running until the water
exits with no air bubbles.
Switch off the unit and screw the nozzle
back on.
Operating the cleaner
Danger!
Observe the relative safety
regulations when using the cleaner at
filling stations or other high-risk
areas.
Caution!
Only clean engines in places which
have appropriate oil separators
(protection of the environment).
Caution!
Only wash animals with the low-
pressure fan jet (see “Selecting the
type of spray”).
Operating with high pressure
The cleaner is equipped with a pressure
switch. The motor only starts up when the
lever is retracted.
Unroll the required length of high-
pressure hose from the hose reel.
Fig. 9
Caution!
Should the hose-reel crank handle
protrude out in front, this should be
pulled out and put on again facing the
housing.
Press safety switch and retract lever.
Set unit switch to “I”.
Adjust operating pressure and flow rate
(+/–) by rotating the pressure/flow
control (infinitely variable).
!
19


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