Advice On Using Detergents; Maintenance - Delco DH 2004 Instruction Manual

REGULATING PRESSURE
AND USING STEAM.
(If available).
This chapter concerns only
those models provided with
the "pressure regulating" de-
vice. The pressure regulator,
fig. 11, allows the operator to
adjust the working pressure.
When knob C is turned in
an anti-clockwise direction
(B) (minimum), the working
pressure is reduced.
Turn the thermostat knob "B" (fig. 7) to steam position to obtain
an increase in the temperature of the water at delivery.
At work temperatures higher than 95°C (203°F), the work
pressure must be < 32 bar (460 PSI).
Use the steam nozzle (supplied as an accessory).
! During use with boiling water, "Steam Phase", keep
away from the openings for fumes discharge (risk of bur-
ning).
When you have finished using the "Steam Phase", turn
the thermostat knob "B" to position "0" (fig. 7) and let
the machine cool down for about 3 minutes with the gun
turned on.

ADVICE ON USING DETERGENTS

This cleaner has been designed for use with the detergents
supplied or recommended by the manufacturer.
The use of other detergents or chemicals may influence the
safety of the cleaner.
1)
For environmental compatibility, we recommend a rea-
sonable use of detergents, according to the instructions
on the pack.
2) From the range of recommended products, choose the
one most suited to the washing job to be done and dilute
it with water according to the instructions on the pack or
in the catalogue of the detergents most suited for the
type of hot or cold water cleaner.
3) Ask your dealer for the detergents catalogue.
English
OPERATING PHASES FOR CORRECT CLEANING WITH
DETERGENTS.
1) Prepare the solution of detergent at the concentration
C
most suitable for the type of dirt and the surface that is
B
to be washed.
2)
Start the cleaner, turn on the detergent tap (if present),
switch on the detergent suction control on the lance and
spray the dirty surface with the diluted product, working
from bottom to top.
Let it work for a few minutes.
3) Rinse the whole surface well from top to bottom with hot
FIG.11
or cold water at high pressure.
4) After use with detergent, rinse the high pressure water
circuit by operating the pump for one minute with the
detergent tap completely closed.
ONLY THE OPERATIONS AUTHORIZED IN THIS IN-
STRUCTIONS MANUAL MAY BE CARRIED OUT BY
ALL OTHER OPERATIONS ARE FORBIDDEN.
For maintenance of the boiler, high pressure pump, the
!
electrical parts and all parts with a safety function, please call
an authorized dealer.
Disconnect the water cleaner from the main electrical
!
supply via the ON/OFF switch or by unplugging the plug from
the socket and close the water supply tap (see chapters on
connecting to the electricity and water mains) before carrying
out any maintenance jobs. Once maintenance has been
completed, ensure that the closing panels have been correctly
reassembled and anchored with the screws provided before
reconnecting the cleaner to the power supply.
Failure to do so may cause a risk of electric shock.
PRECAUTIONS AGAINST FROST
The cleaner must not be exposed to frost.
If the cleaner is left in premises where it is exposed to frost,
when work is over or for storage, antifreeze must be used to
prevent serious damage to the hydraulic unit.
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MAINTENANCE

THE USER.