![background image](http://html2.mh-extra.com/html/karcher/hd-7-16-4-st/hd-7-16-4-st_manual_3621555023.webp)
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6
Maintenance schedule
Time
Activity
Assembly affected
Performance
of whom
daily
Check hand-
spray gun
Hand spray gun
Check whether the hand-spray gun closes tightly
without any leaks. Check the protection mechanism
against accidental switching. Replace defective
hand-spray guns.
Operator
opinion
Power cord
(Only with appliance versions
with power cable and mains
plug).
Check the mains cable regularly for damage such
as aging or formation of cracks. If you find a dam-
age, then the cable must be replaced before using
it any further.
Operator/
Customer
Service
Test fill level
Detergent tank, Installation
water softener (optional)
Check filling level, refill if necessary.
Operator
Check high
pressure hoses
Outlets, hoses towards work-
ing machine
Check hoses to see if there are damages. Replace
defect hoses immediately. Danger of accident!
Operator
weekly or after
40 operating
hours
Check the unit
for leaks
Entire plant
Check pumps and pipes for leaks. Inform Customer
Service if there is oil loss or if there is a leakage of
more than 10 drops of water per minute.
Operator/
Customer
Service
Check oil level
Oil tank at the pump
If the oil is milky, it needs to be replaced. It is rec-
ommended likewise in this case that the pump's oil
seal be changed (Customer Service).
Operator/
Customer
Service
Check oil level
Oil tank at the pump
Check oil level of the pump. Refill oil if required (Or-
der no. 6.288-016)
Operator
Clean filter
Filter at the detergent suck
hose
Clean filter at the detergent suck hose.
Operator
Test vibration
dampener
Vibration dampener
If the vibration of the pump increases it indicates
that the pressure tank is defective. Replace the vi-
bration dampener.
Customer
Service
monthly or after
200 operating
hours
Cleaning the
sieve
Sieve in water inlet
Check, dismantle sieve and clean it.
Operator
Test swimmer
valve
Float tank
When the swimmer valve is closed no water can es-
cape the overflow.
Operator
Test automatic
start
Pressure switch
Pump is at a standstill, because no water removal
has taken place. Turn on the hand spray gun. If the
pressure in the high pressure network falls below 3
MPa, the pump must be turned on.
Operator
Tighten hose
clips
All hose clips
Tighten the hose clips using a torque wrench. Tight-
ening torque up to a diameter of 28 mm = 2Nm,
from 29 mm = 6 Nm.
Operator
annually or af-
ter 1000 operat-
ing hours
Oil change
High-pressure pump
Drain off oil. Refill oil. Check oil level in the oil tank. Operator
Check unit for
calcium depos-
its.
entire water system
Improper functioning of valves or pumps can be an
indication of calcium deposits. If necessary decalci-
fy.
Operator
trained in
decalcifica-
tion
annual
Safety check
Entire plant
Safety check according to the guidelines for fluid
spraying equipment.
Technical
expert
23
EN
Summary of Contents for HD 7/16-4 ST
Page 2: ...2...
Page 37: ...5 o K rcher Karcher CHEM 5 120 0 0 0 1 0 0 CHEM 25 37 EL...
Page 38: ...6 40 10 6 288 016 200 3 MPa 28 mm 2 Nm 29 mm 6 Nm 1000 38 EL...
Page 40: ...8 CHEM CHEM 3 40 EL...
Page 42: ...10 A 3 4 B M 22x1 5 C D E 42 EL...
Page 45: ...13 40 C IEC 60364 1 VDMA 24416 Beuth Verlag K ln www beuth de DN 15 1 2 DN 8 1 mm 1 5 m 45 EL...
Page 47: ...15 47 EL...
Page 67: ...5 I K rcher K rcher CHEM 5 120 0 1 0 I 0 1 0 0 CHEM 25 67 RU...
Page 68: ...6 40 10 6 288 016 68 RU...
Page 70: ...8 RM 81 K rcher CHEM CHEM 70 RU...
Page 71: ...9 3 71 RU...
Page 73: ...11 A 3 4 B M 22x1 5 C D E 73 RU...
Page 78: ...16 78 RU...
Page 143: ...5 I K rcher Karcher CHEM 5 120 0 1 0 I 0 1 0 0 CHEM 25 143 UK...
Page 144: ...6 40 10 6 288 016 144 UK...
Page 145: ...7 K rcher K rcher 15 1 2 MAX BGV A1 RM 100 6 287 008 200 3 28 2 29 6 1000 145 UK...
Page 146: ...8 RM 101 6 287 013 RM 100 RM 81 K rcher CHEM CHEM 146 UK...
Page 147: ...9 3 147 UK...
Page 149: ...11 A 3 4 B M 22x1 5 C D E 149 UK...
Page 154: ...16 154 UK...
Page 155: ......
Page 156: ...http www kaercher com dealersearch...