Kranzle therm 895 ST, therm 1165 ST Operating Manual
www.kraenzle.com
Operating manual
High-pressure cleaner
Read and conform safety instructions before use!
Keep instructions in a safe place for later use and
pass them on to any future user.
- EN -
therm 895 ST
therm 1165 ST
3
Contents
Page
Contents ......................................................................................................................... 3
Overview “This is what you have purchased” ........................................................................... 4
Description of appliance ........................................................................................................... 5
Technical data ......................................................................................................................... 6
General rules - accident prevention .......................................................................................... 7
Safety precautions .................................................................................................................... 8
That‘s what you have to observe ........................................................................................ 10
Kränzle- technology .............................................................................................................. 12
Water and cleaning system ............................................................................ 12
Lance with trigger gun .................................................................................... 12
Total stop system ........................................................................................... 12
High-pressure hose and spraying device ....................................................... 13
Pressure control valve – safety valve ............................................................ 13
Setting for pressure, quantity and temperature .............................................. 13
Thermostat ..................................................................................................... 14
Heat exchanger .............................................................................................. 16
Fuel System ................................................................................................... 17
Adjusting ignition electrodes .......................................................................... 17
Commissioning ..................................................................................................................... 18
Usage as cold water high pressure cleaner ................................................... 19
Usage as hot water high pressure cleaner ..................................................... 19
Suction of detergents ..................................................................................... 20
Decommissioning - frost protection ......................................................................................... 21
Care and Maintenance (weekly/yearly) ................................................................................. 22
Changing the oil ............................................................................................. 22
Decalcifying the heating coil .......................................................................... 23
Particular rules, directives and inspections ............................................................................. 24
Pipeline plan ....................................................................................................................... 25
Circuit diagram ....................................................................................................................... 26
Troubleshooting .................................................................................................................... 28
Excess temperature release ................................................................................................... 29
Hot water mode ...................................................................................................................... 30
Small repairs – do it yourself! ................................................................................................. 32
Spare part lists ...................................................................................................................... 34
Water inlet ..................................................................................................... 34
Water supply ................................................................................................. 35
Electronics switchbox .................................................................................... 36
Fuel supply..................................................................................................... 38
Combustion chamber ..................................................................................... 40
Combustion chamber II .................................................................................. 42
Flow monitoring device - safety block (Flow-Safety-Block) ............................ 44
Motor bearing ................................................................................................. 46
Pump .............................................................................................................. 47
Motor .............................................................................................................. 48
Unloader and pressure switch ........................................................................ 50
Valve housing ................................................................................................. 52
Trigger gun with safety catch „Starlet“ ........................................................... 54
Water filter ...................................................................................................... 55
Inspection report for HP cleaners ........................................................................................... 56
EC – Declaration of Conformity .............................................................................................. 58
Guarantee ....................................................................................................................... 59
Inspection sheet ...................................................................................................................... 60
4
This is what you have purchased
1.
Kränzle hot water high-pressure cleaners
therm 895 St, therm 1165 ST
2.
10 m steel-
weave high-pressure hose DN 8
3.
Safety trigger gun with insulated handle
and screw connection
4.
Spray lance
5.
Operating manual
5
Operating panel
front door of housing 1 , lockable
High-pressure outlet
Water inlet with filter
front door of housing 2, lockable
Housing made of stainless steel
Electric cable, 3 m (without plug)
Description of appliance
Kränzle therm 895 ST, 1165 ST
Master switch (appliance ON-OFF)
Heating switch (heating
ON-OFF
)
Brief operating instructions
Pressure gauge - high pressure
Digital thermostat for adjusting
water temperature
Detergent switch (ON-OFF)
6
Tecnical data
Operating pressure, continuously adjust. 30 - 195 bar / 3 - 19.5 MPa 30 - 165 bar / 3 - 16.5 MPa
Admissible overpressure 215 bar / 21,5 MPa 180 bar / 18 MPa
Water output Qmax 14.9 l/min (895 l/h) 19.4 l/min (1165 l/h)
Hot water output temp. (water supply 12 °C) 12 - 80 °C 12 - 80 °C
Steam level max. 140 °C max. 140 °C
Nozzle size, flat jet nozzle 25045 2507
Heating oil jet - Oil pressure 1.5 Gph - 10 bar 1.65 Gph - 13 bar
Heating oil consumption at max. heat. output 6.0 kg/h = 7,1 l/h 7.1 kg/h = 8,5 l/h
Heating oil consumption at ∆T 45 ° 4.3 kg/h (5,1 l/h) 5.6 kg/h (6,6 l/h)
Heating output 65 kW 78 kW
Exhaust gas mass flow 0.035 kg/s 0.041 kg/s
Steel fabric high-pressure hose 10 m 10 m
Motor speed 1,400 rpm 1,400 rpm
Connected load
400 V, 11 A, 50 Hz
400 V, 11 A, 50 Hz
Power input P 1 - 7.5 kW P 1 - 7.5 kW
Power output P 2 - 5.5 kW P 2 - 5.5 kW
Weight 235 kg 240 kg
Dimensions in mm (w x d x h)
800 x 650 x 1600
800 x 650 x 1600
Sound level acc. to DIN 45 635 89 dB (A) 91 dB (A)
Guaranteed sound level L
WA
91 dB (A) 91 dB (A)
Recoil at lance approx. 22 N approx. 22 N
Vibrations at lance 2.2 m/s
2
2.2 m/s
2
Order no. 41.352 5 41.353 5
Permissible tolerance for figures ± 5 % in acc. with VDMA uniform sheet 2 24411
therm 895 ST therm 1165 ST
7
General rules
Range of application
This machine may only be used for cleaning facades, vehicles, containers, pavement
slabs, stables, machines and smilar objects.
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 operation
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 56 - 57.
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 according to these
instructions). Please read safety notes included in this manual carefully before using the
machine and act correspondingly. Operating staff has to be instructed according to this
manual. The “Guidelines for Liquid Spray Devices” must be complied with.
Setting up - Location
Neither set up and 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.
During the combustion process air is needed and exhaust gas
emerges. If the machine is operated in a confined space, precautions
have to be taken to safely exhaust the fumes. Furthermore a sufficient
ventilation has to be provided for.
Never shut the exhaust gas outlet on top of the machine. Never stoop
over this aperture and never reach into it. Emerging gases are extremely hot!
Do not jam the trigger of the gun during operation!
When carrying through service and maitenance tasks the machine has to
be cut off the power supply system. Put main switch to „0“ and pull plug
out of socket
.
Never operate the machine if cables or other safety-relevant parts (e.g.
excess pressure valve, high-pressure hose, spraying devices, etc.) are
defective.
Safety notes
Never operate the machine without supervision. The machine may only
be operated by persons who have been instructed accordingly.
Some parts inside the machine, all water conducting components and all
metal parts of gun and lance are hot during hot water operation. Keep all
hoods and protective covers closed during operation and never touch
any metal parts of gun or lance.
Persons operating the machine should wear the necessary protective
clothing, i.e. waterproof clothing, rubber boots, safety goggles, headwear
etc. It is prohibited to use the machine in close vicinity to people lacking
suitable protective clothing.
The high-pressure jet can generate a high level of noise. If noise exceeds
the maximum allowed levels, users and others in the vicinity must wear
suitable ear protection
.
Do not spray against matter containing asbestos or other hazardous substances.
For safety reasons always switch the main switch to „0“- postion after
having finished the cleaning task (disconnection from power supply).
8
Safety notes
Bear in mind that during cleaning tasks
with a high-pressure water jet a significant
recoil at the lance arises.
Additionally angled lances produce a
clearly perceivable amount of torque.
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!
9
Never allow children or untrained
persons to use the high-pressure
cleaner!
Never direct the water jet at the
machine itself!
The machine may not be placed within
reach of the water jet spray mist!
Never direct the water jet at a power
socket!
Never direct the water jet at people or
animals!
Only use power cables which are in
perfect working order! Do not damage
the power cable or repair it incorrectly!
Never pull the high-pressure hose if it
has formed kinks or “nooses”!
Never pull the hose over sharp edges!
Lack of water
Lack of water occurs more often than you
probably believe. The more powerful a highpressure cleaner is the greater is the danger
that a lack of water occurs. If there is only
an insufficient amount of water available,
cavitation 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
different water connection, guaranteeing the necessary output.
Lack of water leads to an accelerated wear of the joints
(guarantee void).
Necessary minimum quantity of water: see technical data.
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 considered 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 oat valve. Direct connection to a non-drinking
water supply line is permissible.
10
Please note - important!
11
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.
Consequently 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.
Connected load:
Kränzle therm 895 ST: 400 V, 50 Hz (direction of rotation of no importance)
Kränzle therm 1165 ST: 400 V, 50 Hz (direction of rotation of no importance)
Electrical connection
The machine is supplied with an electrical power cable with plug. The mains plug must
be fitted to a standard grounded socket with a 30 mA 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.
Check the line fusing and have the voltage and the available current
intensity checked by an expert in case of uncertainty.
12
Water and Cleaning System
The water is fed to the high-pressure cleaner under pressure (2-8 bar pre-pressure). A
float valve regulates the water flow in the storage tank. Then the water is sucked directly
from the storage tank by the high-pressure pump and forced with the adusted pressure
through the heat exchanger to the safety spray lance. The high pressure jet is formed by
the nozzle at the end of the safety lance.
Environmental, refuse disposal and water protection regulations
must be observed!
Kränzle technology
Lance with trigger gun
The machine can only be operated when the safety trigger 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 motor stops.
When actuating the gun once more the pressure control valve - safety valve closes
and the motor is started again. The pump resumes feeding water to the spraying lance
with the selected operating pressure. When the gun is closed, the water hammer opens
the pressure control valve - safety valve and the motor is switched off by the pressure
switch.
The trigger 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.
Total stop system
The machine is fitted with a Total-Stop-System. If the gun is closed for longer than
approx. 20 seconds, the machine switches off automatically, after 20 minutes the machine moves to safety switch off and you must use the main switch to turn it back on.
The machine restarts automatically when the gun is operated, provided the master
switch is on.
13
High-pressure hose and spraying 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.
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 spraying device must be connected in a
pressure-tight manner.
The high-pressure hose may not be driven over, pulled excessively, or twisted. The hose may under no circumstances be pulled over sharp edges,
since otherwise the guarantee is automatically void.
Hoses are wearing parts. The guarantee only covers defects of fabrication no external damages whatsoever.
Defective high-pressure hoses and spraying devices may not be
repaired. They always have to be replaced.
Pressure control valve-safety valve
The pressure control valve allows full adjustment of the quantity and pressure of the
water. The safety valve protects the machine from excessive pressure and cannot be
adjusted beyond the admissible operating pressure. The setting nuts are sealed with
lacquer
.
Replacements, repairs, new adjustments and sealing operations may
only be performed by trained personnel.
Setting for pressure, quantity and temperature
The pressure control valve on the pump
head is used to control the operating
pressure plus the water flow and consequently the water temperature as well.
Turn right to increase the pressure,
turn left to reduce the pressure.
14
Kränzle technology
The thermostat controls the spray water
temperature.
After you switch on the device, “888” appears in both displays for approx. 1 second
as a test of the functioning of the displays.
The thermostat also monitors the mini-
mum fuel level in the tank with a oating
switch. If the level is below the minimum
amount, the thermostat switches the oil
burner off and the “OIL” sign ashes in
the set temperature display (Pos. 1). If the
unit displays “FLA” in the upper display, a
malfunction in burning exists.
Thermostat
12 3 4 5 6
The thermostat has two operating modes:
1. Temperature mode
This mode is always activated when the unit is switched on or can be selected using the
“°C°” button (Pos. 3). The red LED above the “°C” button and next to the set temperature
display lights up. The desired “Set” temperature is set using the two buttons (+/-, Pos.
5+6) and can be read in the upper display (Pos. 1). If you press the button for a longer
time, the set temperature is quickly adjusted in 5°C increments.
The last set value set is also stored after the unit is switched off and is available again
immediately after switching back on. The current spray temperature can be read from the
bottom display (Pos. 2).
2. Percentage mode
This mode is activated by pressing the “%” button (Pos. 4). The yellow LED above the “%”
button and next to the set temperature display ashes.
In the temperature control system in conventional high-pressure cleaners, and in
temperature mode for this unit, the water temperature is measured at the outlet of the
heater, and the heater is switched On an Off according to the temperature desired by the
user. Due to the large amount of water in the heating coil, it takes a long time until the
temperature sensor registers that the burner has switched on and the desired temperature
has been reached. This means that the temperature increases far above the desired value
or falls far below the desired value
.
15
Thermostat - percentage mode
The innovative new percent mode now lets the user specify the switching duration of
the heater in percent using the “+” and “-” buttons (Pos. 5+6) (100% being the max.
temperature) rather than setting the desired temperature. Now the result of the setting
must be checked by using the “Actual” temperature display. If the desired temperature has
not yet been reached, the percentage must be increased. By setting percentages of the
heating duration, the temperature of the high pressure jet is kept constant in a very narrow
range. The last value set is also saved after the unit is switched off in percent mode.
Operating hour meter
The cleaner is equipped with an operating hour meter. If during normal operation the
momentary operating mode button ( “°C” or “%” ) is actuated for more then 2 seconds,
the operating time of the pump is displayed for 5 seconds and afterwards the combustion
time for 5 seconds as well. Thereafter the display shows the original values again. As
long as the operating hours are displayed no further inputs on the monitor are possible.
The operating time is displayed in hours [ h ] either in the “TARGET” or in the „ACTUAL“
window. The 1000 and 100 hours are displayed in the „TARGET“ window and the 10, 1
and 1/10 hours in the “ACTUAL” window:
Pump operating time: Target-Display: P 9 9 Actual-Display: 9 9. 9 for 9 999.9h
Combustion time: Target-Display: F 9 9 Actual-Display: 9 9. 9 for 9 999.9h
e.g.: F00 27.3 = Cumbustion time 27 hours and 18 minutes
16
Kränzle technology
Heat exchanger
The water is forced through a heating coil by the high pressure pump. Heating coil: 38 m
long - Content: 5 l of water - Heating capacity: max. 90 kW
The fuel pump draws the oil from the tank through a filter and pumps it to the injector
nozzle. The oil pressure is shown on the fuel manometer.
The heat exchanger is heated by a high pressure fan heater.
A ventilator draws in the cold, fresh air from the bottom end of the machine and forces it
upwards between the outer cladding and the inner cladding. In the process, the fresh air
is pre-heated and the outer cladding of the heat exchanger is cooled.
The pre-heated air is pressed through a mixing unit. Here finely atomized fuel is injected
via a nozzle and mixed with the air. The electrodes located below then ignite the fuel-air
mixture.
The flame burns from top to bottom, turns round and the hot gas flows past the heating
coil on its way back up. The burned gases collect in the exhaust chamber and are emit-
ted from the chimney.
Chimney
Mixing unit
Nozzle
Electrodes
Inner cladding
Outer cladding
Oil filter
Fuel pump
Heating coil
Fan
17
Detergent and dirty fuel must be disposed of responsibly.
Adjusting ignition electrodes:
For a smooth ignition, the setting of the ignition electrode must be controlled regularly
(after 500 operating hours at the latest).
Fuel System:
Your fuel may contain particles of dirt, or impurities or water may get into the tank during
refuelling. To protect the fuel pump the machine is equipped with a fuel filter. Check this
filter regularly for impurities and clean if necessary.
Check the tank for impurities on a regular basis. Clean the tank when necessary. Empty
the fuel tank using the drainage screw at the bottom of the tank. Clean tank and fuel
pipes thoroughly. Screw drainage screw back in.
1. Connect to power circuit. Make sure that the main switch is in the „OFF“ position.
2.
Connect machine to water mains (2 - 8 bar pre-pressure). Inside diameter of hose minimum 1/2“. The water storage tank is filled with water. The float valve shuts the water intake
as soon as the tank is full.
3.
Screw HP hose tightly to the cleaner.
4.
Push on HP hose to gun.
5.
Screw together HP hose and gun
pressure-tightly.
18
Commissioning
6.
Always check oil level prior to operation!
Open the machine.
Do not start the machine if the oil level is not
between the two markings on the oil-level
glass. Refill with oil if necessary. See page 23.
Take care that all screw connections are pressure-tight. A leakage of
gun, high-pressure hose or hose drum has to be repaired at once.
Leakages lead to an increased wear and to a possible malfunction of the
delayed motor cut-out.
1.
Ignition switch to -OFF- position
Detergent valve must be closed!
(Turn knob to extreme left position „close“)
2.
Switch on main switch with disen gaged
spray gun. Vent high-pressure cleaner: Pull
and release trigger of spray gun various
times.
Start cleaning process.
Usage as cold water high-pressure cleaner
1.
a) Temperature mode: Set desired tem-
perature at the thermostat. (Min. temperature 40 °C)
b) Percentage mode: Set percentage
value of the heat output
2.
Switch on main switch with disengaged
spray gun. Vent high-pressure cleaner:
Pull and release trigger of spray gun
various times.
Detergent switch must be closed!
(switch in left end position)
3.
Start heating. The water is heated up
and constantly kept at the set
temperature.
Start cleaning process.
Usage as hot water high pressure cleaner
19
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