Kranzle 122 Silent User manual

Operating manual
High-pressure cleaners
Read and conform safety instructions before use!
Keep instructions in a safe place for later use and pass them
on to any future user.
- GB -
122 Silent

Description
Kränzle 122 Silent
Ergonomically shaped handle
High-pressure gun
Pump head made of special brass
for a long service life
Large stainless steel manometer
Continuously adj. pressure
control
Cable reel with 5 m cablel
On/Off switch with motor
protection
Receptacle for washing lance
Receptacle for high-pressure
gun
Trolley suited for difficult terrain
and stairs
2

Description of appliance 2
Contents 3
Technical data 4
Overview “This is what you have purchased” 5
General rules 6
Safety precautions – accident prevention 6
Extremely important: Water connection–electr. connection 7
Kränzle- technology 10
Water and cleaning system 12
Lance and spray gun 12
Pressure control valve – safety valve 12
Motor protecting switch 12
High pressure hose and spray device 13
Putting into operation 13
Connection to water mains 14
Direct suction 14
When using detergents 18
To shut down the pump / frost protection 19
Small repairs – do it yourself ! 20
EG – Declaration of Conformity 24
Guarantee 25
Accessories for high-pressure cleaners 26
Spare parts list 28
Complete assembly 28
Motor 30
Transmission 32
Valve housing 34
Gun with lance 36
Wiring diagram 37
Inspections/inspection reports 38
Contents Page
3

4
Operating press. continuously adj 10 - 120 bar (1700 PSI)
Nozzle size 20 028
Permissible overpressure 135 bar
Water output at 1.400 r.p.m. 7 l/min
Water inlet temperature max. 60 °C
Sucton height 1,5 m
Steel-weave high-pressure hose 10 m
Detergent suction special accesories
Connected load 230 V~, 7.5 A, 50 Hz
Power input P 1 - 1.6 kW
Power output P 2 - 1.0 kW
Weight 25 kg
Dimens. incl. pulling handle in mm 300 x 330 x 800
Sound level acc. to DIN 45 635 71 dB (A)
Acoustic power LWA 84 dB (A)
Recoil at lance ca. 27 N
Vibration at lance 1.9 m/s2
Order no. 41.221
Permissible tolerance for figures ± 5 % acc. to VDMA uniform sheet 24411
Kränzle 122 Silent
Tecnical data

5
This is what you have purchased
1. Kränzle high-pressure cleaner
122 Silent
2. Safety spray gun with insulated handle
and screw connection
3. Washing lance with Kränzle knife jet
nozzle
4. Steel-weave high-pressure hose
10 m, NW 6
5. Operating manual

6
General rules
Range of application
Use machines for cleaning tasks with high-pressure water jet and detergents or with
high-pressure water jet without detergents only.
Inspections
The machine must be inspected according to the “Guidelines for Liquid Spray Devices”
at least once every 12 months by a qualified person, to ensure that continued safe ope-
ration is guaranteed. The results of the inspection are to be recorded in writing. This
may be done in any form. For inspection reports see pages 38-39.
High-pressure cleaners used for commercial purposes have to
be checked by a qualified person at least every 12 months!
Accident prevention
The machine is designed for accidents to be impossible if used correctly.The operator is
to be notified of the risk of injury from hot machine parts and the high pressure water jet.
The “Guidelines for Liquid Spray Devices” must be complied with. (see pages 8 and 9).
Oil change:
1. The first oil change should be carried out after approximately 50 operating hours.
After that no further oil change will be necessary for the life cycle of the high-pressure
cleaner. UPut the machine into a horizontal position, then open the oil discharge screw at
the bottom of the device over a collection reservoir. The oil is to be caught in the reser-
voir and disposed of in an approved manner.
New oil: 0.25 l - Motor oil W 15/40.
Oil leakage: If oil leaks contact your nearest after-sales
service (dealer) at once. (Ecological damage, damage to
the transmission)
In case of increased humidity or fluctuations in
temperature development of condensed water is possible;
if the oil turns grey, you must change it.

7
Safety precautions
Bear in mind that during cleaning tasks
with a high-pressure water jet a significant
recoil at the lance arises (see technical
data on page 4).
Apply the safety catch on the spray
gun after each use, in order to prevent
unintentional spraying!
Always aim the underbody lance! Bear in
mind when using a curved or angled
spraying lance that there is a significant
amount of torque in the recoil!

8
Safety precautions - This is prohibited!
Never direct the water jet at people
or animals!
Only use power cables which are in
perfect working order! Do not dama-
ge the power cable or repair it incor-
rectly!
Never pull the high pressure hose
if it has formed kinks or “nooses”!
Never pull the hose over sharp
edges!

9
Safety precautions - This is prohibited!
Never allow children to use the
high pressure cleaner!
Never direct the water jet at the
machine itself!
Never expose the machine to the
spray mist of the high-pressure water
jet!
Never direct the water jet at a
power socket!

10
Please note - important:
Lack of water
Lack of water occurs more often than you
probably believe. The more powerful a
high-cleaner is the greater is the danger
that a lack of water occurs. If there is only
an insufficient amount of water available,
cavitation (water-gas mixture) arises inside
the pump, which is normally noticed too late
or even not at all. .
The pump will be destroyed!
Please check the available quantity of water
by filling a bucket with litre scale for one
minute .
If the metered quantity of water is too small, you have to use a diffe-
rent water connection, guaranteeing the necessary output.
Lack of water leads to an accelerated wear of the joints (no guaran-
tee)
A minimum water quantity of 7 litres per minute must be available to guarantee a
trouble-free operation of the Kränzle 122 Silent.
Water supply
Please pay attention to the regulations of your waterworks company!
In accordance with DIN EN 61770, the machine may not be directly
connected to the public drinking water supply lines. A brief connection
however is permissible according to DVGW (German Association
for Gas and Water Affairs) if a non-return valve with tube ventilator
(Kränzle order no. 41.016 4) is built into the water supply . Once the
water has passed through the non-return valve it is no longer con-
sidered as drinking water.
Also indirect connection to the public drinking water supply lines is permissible by way
of free emission in accordance with EN 61 770; e.g. by using a reservoir with a float
valve.
Direct connection to a non-drinking water supply line is permissible.

Insufficient quantity of electricity
If there are too many collectors in your
proximity connected to the network at the
same time, the available voltage and the
current intensity may decline. Consequent-ly
the motor of the high-pressure cleaner does
not start or even blows.
The power supply may also be insufficient
if the power cable is too long or too thin. If
extension cables are too long, this may lead
to a voltage drop causing malfunctions or
start-up difficulties.
Check the line fusing and have the voltage and the available current
intensity checked by an expert in case of uncertainty.
11
Kränzle 122 Silent:
230 V ~, 7.5 A, 50 Hz
Electrical connection
The machine is supplied with a 5 meter electrical power cable with plug. The mains plug
must be fitted to a standard grounded socket with a 30mA residual current operated
device. The socket must be protected with a 16A delay action fuse on the mains side.
When using an extension cable, this must have an earthed lead which is properly
connected to the socket. The conductors in the extension cable must have a minimum
cross section of 1.5 mm².
Plug connections must be of a spray-proof design, and may not be located on a wet
floor. With extension cables of more than 10 m the minimum cross section must be
2.5 mm! When using a cable drum, always keep the cable wound as far as possible.

12
Kränzle technology
Wasser and cleaning system
Water can be connected at mains pressure (1-8 bar pre-pressure9) to the high pressure
pump or it can be sucked directly from a storage tank. The water is then forced under
pressure by the high pressure pump to the lance. The high pressure jet is formed by the
nozzle at the end of the lance.
Environmental, refuse disposal and water protection
regulations must be observed!
Lance with spray gun
The machine can only be operated when the safety trigger of the gun is squeezed. When
the lever is squeezed, the spray gun opens. The liquid is then pumped to the nozzle.
The spray pressure increases and quickly reaches the selected operating pressure.
When the trigger is released, the trigger gun closes and any further spraying of liquid
from the lance is stopped.
The increase in pressure when the trigger gun is closed causes the pressure control
valve-safety valve to open.
The pump remains switched-on and works with recuced overpressure in by-pass. When
the spray gun is opened, the pressure control valve - safety valve closes and the pump
resumes pressure spraying from the lance with the selected operating pressure.
The spray gun is a safety device. Repairs should only
be performed by qualified persons. Should replacement
parts be required, use only components authorized by the
manufacturer.
Pressure control valve - safety valve
The pressure control valve - safety valve protects the machine from a build up of
excess pressure, and is designed not to permit an excess pressure to be selected for
operation. The limit nut on the handle is sealed with a spray coating. The operating
pressure and spray rate can be steplessly adjusted by turning the handle .
Replacements, repairs, new adjustments and sealing
should only be performed by qualified persons.

13
Motor protection switch
The motor is protected from overload by a motor protection switch, which cuts out the
motor in the event of overload. However should the switch trip frequently, the cause of
the malfunction should be located and rectified (see page 11).
Replacements and inspection work should only be performed
by qualified persons when the machine is disconnected from
the power supply, i.e. with plug pulled out from the electrical
socket.
High pressure hose and spray device
The high pressure hose and spraying device supplied with the machine are made of high
grade material, they are also optimized for the machine and marked as required by the
appropriate regulations. (max. hose length 20 m)
If replacement parts are required, only such parts that are
authorized by the manufacturer and which bear the markings
required by the appropriate regulations may be used. The high
pressure hose and spray device must be connected in a pres-
sure-tight manner (without leakage).
The high pressure hose may not be driven over, pulled exces-
sively, or twisted.
The hose may under no circumstances be pulled over sharp
edges, since otherwise the guarantee is automatically void.

Setting up - location
Neither set up or operate the machine in rooms where
there is a risk of fire or explosion nor put it into puddles.
Do not use the machine under water.
14
Putting into operation
4. Insert spray lance into gun.
2. Check water inlet filter for cleanli-
ness prior to putting the machine into
operation!
Manually unscrew hose attachment. Take
out the serial water inlet filter using needle
nose pliers and clean if filter is soiled.
1. Move high-pressure cleaner to the job
site. The Kränzle Silent 120 is a movable
machine with sturdy trolleys ideally suited for
difficult terrain and stairs.
3 . Each time check oil level at oil-level
glass prior to putting HP cleaner into
operation. (Take care that cleaner is in
horizontal position!)
The oil level must be visible in the centre
of the oil-level glass .

15
6. Unwind high-pressure hose straight
and without nooses. (When using hose
extensions take care that the max. length
of 20 m is not exceeded!)
9. Put HP cleaner into horizontal position.
These machines must be operated in
horizontal position! Connect high-pressu-
re hose to pump and connect tightly.
7. Push on HP hose to gun.
8. Tightly screw together HP hose and
gun.
5. Screw together lance and gun.
Be careful when using hot water!
When running your high pressure cleaner with hot water
of 60° C raised temperatures occur. Do not touch the
metal parts of the cleaner without safety gloves!

16
Putting into operation
12. Steplessly adjust operating pressure
with handwheel. The maximum pressure
is adjusted ex work.
13. Switch on high-pressure cleaner
with opened spray gun. Bleed appliance:
Gun has to be opened and closed several
times. Start cleaning task.
11. Connect to circuit.
Kränzle 122 Silent:
230 V ~, 7.5 A, 50 Hz
The socket must be protected with a 16A
delay action fuse on the mains side.
10. Connect water hose to water inlet.
The cleaner may be connected to a water
mains (1-8 bar pre-pressure) with either
cold or up to 60°C warm water.

17
Direct suction
Sucking in water from ponds, rain butts etc.
Due the suction capacity of its pump (up to 1.5 m suction height, max. hose length 2 m)
this high-pressure cleaner can suck in water for cleaning purposes from separate contai-
ners or ponds.
Attach suction hose. The inner diameter of
the hose must be at least 3/4“ = 16 mm.
Best use suction hose with suction filter
from the Kränzle accessories: Order no.
15.038 3
Use clean water only!
Prior to starting the first suction the pump resp. the suction
hose has to be filled with water!

Detergent suction set (Kränzle accessories order no.13 376 5)
By installing a detergent injector between pump and high-pressure hose, detergents can
be sucked in and mixed into the water jet.
Observe specifications of detergent manufacturer!
e.g.: protective equipment, rules for waste water treat-
ment etc.
Caution: dissolvents!
Never suck in liquids containing solvents like
varnish solvents, petrol, oil or similar liquid! Observe
specifications of detergent manufacturers
! Seals inside
the appliance are no resistant against solvents! The spray
mist of solvents is highly inflammable, explosive and
poisonous.
18
Suction of detergents
To be able to do this it is necessary to
use a sucton set lance with adjustable
regulation nozzle from high to low pres-
sure, as the suction process only works
if the machine operates in low pressure.
By adjusting the regulation nozzle to
high-pressure the supply of detergents is
stopped.
1. Unscrew high-pressure hose and
mount detergent injector to the high-pre-
sure outlet and connect to HP hose.
2. Insert injector hose with filter into the
container with the detergent.
3. Switch on cleaner with opened gun
and set the regulation nozzle of the lance
to low pressure. (detergent admixture 3
- 5 %)
4. Let detergent act and then spray off
with high-pressure water jet.

19
To shut down the pump
01. Switch off the machine
02. Cut off the water supply
03. Open the spray gun briefly until the pressure is released
04. Apply the safety catch on the spray gun
05. Remove the water hose and spray gun
06. Drain the pump: switch on the motor for approx. 20 seconds
07. Pull the plug from the socket
08. Clean HP hose and wind up
09. Clean power cable and wind up
10. Clean water filter
11. Winter: store the pump in rooms above 0°C
Due to their compact and space saving
design the Kränzle Silent cleaners can be
stored practically anywhere
Store in a place-saving manner

20
Small repairs - do it yourself
No water from the nozzle but the gauge shows full pressure:
Most likely the nozzle is blocked.
The pressure gauge shows full pressure,
but from the nozzle comes only little water
or no water at all.
(Inside the pressure gauge is no water but
a filling with glycol to damp the vibration of
the pointer.)
Proceeding:
Switch off the cleaner. Pull plug from
the socket. Operate gun seveal times to
decrease the pressure.
First unscrew gun and lance, then rinse
hose from any residues.
Check water inlet filter for soiling.
If the problem still exists, take wire (paper
clip) and push through nozzle opening.
CAUTION! Pull plug from socket prior to starting
any repair work!
If this procedure is not successful, the nozzle has to be dismantled and cleaned or even
replaced, if necessary.