Kärcher HD 4000 C Manual Del Usuario página 55

HD 4000 C / HD 6000 C
Interval Procedure
monthly, or Check
after 200 overflow valve
operating
hrs.
Check
low-water
sensor
Clean
strainers
Check float
valve
Check
pressure relief
valve
Check run-on
interval
Check
automatic
switching on
Tighten hose
clamps
5.956-648 A10369 (06/98)
E. Maintenance
Subject Assembly
Overflow valve
Float switch in float
reservoir
Dirt trap upstream of float
reservoir,
Pressure controller
Float reservoir
Pressure relief valve on
pump
System control
Pressure switch
All hose clamps in/on the
unit
Activity
Dependent on the number of
high-pressure handguns used, the
pressure reading fluctuates between
the preset value and approx. 15 bar
below the same. On closing all
handguns, the gauge will read
approx. 0 bar. In the event of
malfunction, call customer service.
For about 5 seconds press down the
float of the low water protection
facility and check the fault indication
on the printed circuit board. If
necessary remove any deposits.
Switch OFF unit, turn OFF water,
release pressure. Disassemble and
clean strainers.
Water level must stand 40 mm
below the overflow weir. With float
valve closed, no water may exit. For
adjustment information, refer to the
Service Manual.
When functioning correctly, the
motor must reach full RPM within
2 seconds. If required, clean the
strainer upstream of the pressure
release valve. Prior to cleaning:
Shut OFF water, set Emergency-
STOP master switch to OFF.
Close utiliser (e.g. handgun).
After the after running time (approx.
15 sec) the pump must switch off.
The pump is stationary as no water
is being drawn. Open the handgun.
When the pressure in the
high-pressure network drops below
25 bar, the pump must switch on.
Tighten hose clamps with torque
wrench.
Torque:
28 mm nominal diameter: 2 Nm
29 mm nominal diameter: 6 Nm
English
By whom
Operator
Customer
service
Trained
operator
authorised
to open
control
cabinet
Operator
Operator
Operator
Operator
Operator
Operator
E4