Proper Use; Safety Devices; Overflow Valve - Kärcher HD 7/11-4 Cage Manual De Instrucciones

Transport
The engine is to be brought to a standstill
and the appliance is to be fastened properly
during transportation.
Maintenance
– Switch off the appliance and, in case of
appliances connected to the mains, pull
out the power cord before cleaning and
performing any maintenance tasks on
the machine.
– Relieve the high pressure system of all
pressure prior to all work on the appli-
ance and the accessories.
– Maintenance work may only be carried
out by approved customer service outlets
or experts in this field who are familiar
with the respective safety regulations.
– Mobile industrial apliances are subject
to safety inspections according to the
local regulations (for e.g. the following
are applicable in Germany: VDE 0701).
Accessories and Spare Parts
– To avoid risks, all repairs and replace-
ment of spare parts may only be carried
out by the authorised customer service
personnel.
– Only use accessories and spare parts
which have been approved by the man-
ufacturer. The exclusive use of original
accessories and original spare parts
ensures that the appliance can be oper-
ated safely and trouble free.

Proper use

Use this high pressure cleaner exclusively for
– cleaning with a high pressure jet without
detergent (e.g. cleaning of facades, ter-
races, garden appliances, vehicles and
similar objects).
For stubborn dirt, we recommend the use of
the dirt blaster as a special accessory.
Quality requirements for water:
ATTENTION
Only clean water may be used as high
pressure medium. Impurities will lead to in-
creased wear and tear or formation of de-
posits in the appliance.
If recycled water is used, the following limit
values must not be exceeded.
pH value
electrical conductivity *
settleable solids **
total suspended solids *** < 50 mg/l
Hydrocarbons
Chloride
Sulphate
Calcium
Total hardness
Iron
Manganese
Copper
Active chloride
free of bad odours
* Maximum total 2000 µS/cm
** Test volume 1 l, settling time 30 min
*** no abrasive substances

Safety Devices

Safety devices serve to protect the user
and must not be rendered in operational or
their functions bypassed.
The trigger safety on the trigger gun prevents
accidental switch-on of the appliance.
– While reducing the water supply/quanti-
ty regulation at the pump head, the
overflow valve opens and part of the
water flows back to the pump suck side.
– If the hand spray gun is closed, the
overflow valve opens and the entire wa-
ter volume will flow back to the pump
suction side.
The overflow valve is set by the manufacturer
and sealed. Setting only by customer service.
The safety valve opens when the overflow
valve is defective.
The safety valve is set by the manufacturer
and sealed. Setting only by customer service.
Not all unit models are equipped with a
safety valve.
– 4
EN
6,5...9,5
Conductivity
fresh water
+1200 µS/cm
< 0,5 mg/l
< 20 mg/l
< 300 mg/l
< 240 mg/l
< 200 mg/l
< 28 °dH
< 50 °TH
< 500 ppm
(mg CaCO
< 0,5 mg/l
< 0,05 mg/l
< 2 mg/l
< 0,3 mg/l
Trigger safety

Overflow valve

Safety valve
/l)
3
19