KONVEKTA TAURUS User manual

Konvekta AG
Am Nordbahnhof 5
34613 Schwalmstadt
Germany
+49 ( 0 ) 66 91 / 76 – 0
+49 ( 0 ) 66 91 / 76 - 200
[email protected]
www.konvekta.com
Operating Instructions
for KONVEKTA
air conditioning units
with climate control KS40
Version:
- 24 Volt DC
- Recirculated air
ID#: BBA-KL9T0102A
Version: A00

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Contents
Page:
•Introduction....................................................................................................................... 3
•Information on the operating instructions ...................................................................... 4
1. Technical data..................................................................................................................4
1.1. Compressor .......................................................................................................................4
2. Generally information for a/c unit...................................................................................5
2.1. Intended Use .....................................................................................................................5
2.2. Operating Conditions .........................................................................................................5
3. Operation..........................................................................................................................5
3.1. General description KS40 .................................................................................................6
3.2. Control / Key function with "ignition on" (ZE)......................................................................6
3.3. Key function with "Motor on" (ME) and active controller .....................................................6
3.4. Display function .................................................................................................................7
4. Functional description KS40...........................................................................................7
4.1. Display...............................................................................................................................7
4.2. Room temperature control .................................................................................................7
4.3. Ventilation..........................................................................................................................7
4.4. Circulating air.....................................................................................................................8
4.5. Additional key functions .....................................................................................................8
4.5.1. Temperature request .........................................................................................................8
4.5.2. Switchover unit °C / °F.......................................................................................................8
4.5.3. Contrast LCD.....................................................................................................................8
4.6. Background functions ........................................................................................................8
4.6.1. Procedures for switching on the power supply (KL15) ignition ...........................................8
4.6.2. Operations when the motor is switched on/off (release D+/climate) ...................................9
4.6.3. Automatic blower configuration ..........................................................................................9
5. Error handling diagnosis.................................................................................................9
6. Maintenance / Service .....................................................................................................9
6.1. Troubleshooting ...............................................................................................................10
7. Warranty Conditions......................................................................................................10
8. Waste disposal in accordance with legal provisions ..................................................11
9. History of modification..................................................................................................11
Appendix:
•Maintenance Schedule........................................ WP07050618

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Introduction
These operating instructions have been written for drivers, operators and the maintenance staff of
your air conditioning unit.
In this context, we refer implicitly to the compliance with our general installation guidelines.
These can be obtained from the KONVEKTA technical after sales service:
[e-mail].
Please observe our valid safety instructions, available under www.konvekta.de/asv.html. In
case of order placement or any other conclusion of contract the safety instructions get in-
tegral part of the contract.
These operating instructions have to be read carefully and made use of before the first start-up and
after that regularly by each person who is involved in handling the machine:
⇒Operation including troubleshooting and waste disposal of fuels and auxiliary agents
⇒Servicing, inspection, repair
⇒Transport
This facilitates the handling and avoids trouble caused by improper operation. Working in compli-
ance with these operating instructions increases operation reliability and service life of the air con-
ditioning unit and reduces life cycle costs.
Please complete these instructions by adding the national provisions for prevention of ac-
cidents and environmental protection.
These instructions are part of the air conditioning unit. Always have a copy at hand in the
driver’s cabin.
You will certainly understand that we will not recognize any warranty claims due to improper han-
dling, inadequate maintenance, applications that do not correspond with the determined use, utili-
zation of non-admitted fuels or the non-observance of safety provisions.
KONVEKTA will annul without notice all obligations concerning guarantee, service contracts etc.
regardless if granted by KONVEKTA or its distributors in case other than original KONVEKTA
spare parts or parts bought from KONVEKTA AG have been used for maintenance and repair.
These operating instructions contain all necessary information to operate your air conditioning unit.
In case you need more explanations please contact the next KONVEKTA service station.

On our website www.konvekta.com in category >service< you will find a survey of contact details
of all our service partners close to your location .
Information on the operating instructions
These operating instructions are valid for the air conditioners type:
•TAURUS
When taking the unit into operation we recommend adding the following data. This will also be im-
portant for your orders of spare parts, and in case of warranty
Serial number of the unit: ...........................................
Order No.: ..........................................
Year of construction: ................../ .............. ................. (MM/JJ)
Date of first operation: ................../ ............../................. (TT/MM/JJ)
The machine is in accordance with the EC machinery directive 2006/42/EC.
The unit contains or needs fluorinated greenhouse gas for operation and is subject
to identification requirements in accordance with F-Gas Regulation 517/2014.

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Due to the fact that scope of supply depends on the order, equipment of your product may
differ in some parts of description.
In case your product is equipped with details not shown or described in the operating in-
struction, your KONVEKTA -Service-Station will always be at disposal for informing you
about correct operation.
In the course of further developments we reserve the right to technical modifications without notice.
Guarantee and liability conditions of KONVEKTA AG’s general business conditions are not en-
larged by the above notes.
Indications and photos should neither be copied and circulated nor used for competitor’s purposes.
All rights according to the copyright remain expressly reserved.
Manufacturer: KONVEKTA AG, Postfach 2280, D-34607 Schwalmstadt
1. Technical data
Important!
In vehicles that are equipped with an a/c unit with heating function the heating medium has to con-
sist of water/glycol – antifreeze protection (conform the mixing ratio to manufacturers` instructions).
This is absolutely necessary to prevent the heaters from frost damage!
(The prevalent antifreeze filling of the vehicle manufacturers goes down to -40°C.)
Type: TAURUS
Refrigerant: R134A
GWP 1.430
Refrigerant charge: [kg] approx. 5,2
Operating voltage: [Volt DC] 26
Current consumption: [Ampere] 100 - 115
Cooling capacity with KVX40/655:[W] 41.000 – 43.000*
Evaporator – Air volume [m
3
/h] 6.000 – 8.000*
Measurements:
- Length: [mm] 3.580
- Width: [mm] 1.914
- Height *: [mm] 230
Weight [kg] approx. 170 -175*
*installation height (centerline)
1.1. Compressor
Carry out the first oil change with the first maintenance, then every 3 years. Also clean the oil in-
take strainer. The oil charge is dependent on the compressor type.
Important to avoid leakages at the shaft seal of the compressor:
The compressor should be started every 4 weeks for approx. 15 minutes!
This also applies when the vehicle is not into operation for a longer period or when the air condi-
tioning unit is not used!
C
ompressor
t
yp
e
:
KVX40 / 655
Weight approx. [kg] 35
Refrigerant oil / Quantity (Liter) Esteröl SE55 / (2)
Magnetic clutch 24V DC

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2. Generally information for a/c unit
Attention in case of roof top a/c units: Never switch on the a/c unit during car-wash!
The a/c unit is operational with running engine only.
At cooling operation the humidity inside the vehicle is decreased, which avoids steamed up
windows.
The a/c unit works most effectively with windows and doors shut. If, however, the interior of the
standing vehicle has been heated up severely by exposure to sunlight, short-time opening of
windows and doors may accelerate the cooling down process.
At high outside temperature and humidity condensate might drip off the evaporator and make a
puddle under the vehicle. This is quite normal and no sign for a leakage.
The filter in the return air grid (optional) retains pollution. If the external air is contaminated with
gas switch over to return air operation. The filter should be cleaned or replaced respectively on
a regular basis so that the capacity of the a/c unit is not affected.
If you think that the air conditioning unit has been damaged switch it off immediately in order to
avoid further damage. The air conditioning unit may be taken into operation again only after it
has been checked at a KONVEKTA Service Station.
2.1. Intended Use
The KONVEKTA air conditioner represents an air conditioning system that works with the ozone
friendly refrigerant R 134a and which creates a pleasant and individually adjustable room tempera-
ture by means of forced convection. The determined use includes also the observance of the Op-
erating instruction and the proof of regular inspections as well.
2.2. Operating Conditions
NOTE: KONVEKTA uses components made of copper and aluminium, which last a whole unit life-
time under normal environmental conditions. Should the units be operated under aggressive envi-
ronmental conditions, i.e. air containing salt-, phosphate- or ammoniac extremely, a corrosion of
the cupper- and aluminium components cannot be ruled out. The cupper- and aluminium compo-
nents of the KONVEKTA systems are not suitable for such extreme application conditions. We
indicate emphatically, that corrosion is not subject to warranties for defects. KONVEKTA does not
take over any warranties for defect, neither for corrosion nor for consequential damage resulting
there from, nor for damages caused by cleaning the systems with highly compressed or corrosion
advancing substances.
3. Operation
Danger of accidents!
•Focussing your attention on the road traffic is of top priority.
•Only operate your air conditioning unit when the traffic situation allows it!
•Make sure you can clearly recognize and read all operation- and display-elements at any time.
•Protect all displays against irritating sun glare and any other optical disturbances.
•Please note that the control panel keys have not been designed for heavy stressing.
•Excessive or fast pressing of the keys for adjusting the set temperature does not accelerate the
cooling down process. It possibly damages the control panel and so affects the general perfor-
mance of the air conditioning unit.

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3.1. General description KS40
The KS40 climate control is used to control a bus air-conditioning
system consisting of compressor, condenser, evaporator and recircu-
lation flap.
The interior temperature is recorded by a sensor in the return air of
the air-conditioning system, the outside temperature is also optionally
recorded by a sensor.
The control unit can be mounted directly in a cut-out in the instrument
panel or via the Konvekta adapter housing B59-AA3-097 and the
mounting frame T11-000-108 in a radio DIN shaft.
Cut-out size: 90,5/+0,5/-0mm x 43,5/+0,5/-0mm and wall thickness cut-out: 2mm - 4mm.
Operation is via a safety shutdown mat, which also serves as a seal. Information is displayed on a
segment LCD.
The device can be used in vehicles with 12V or 24V on-board power supply. It is connected to the
vehicle via a 16-pin male connector. The permissible ambient temperature is -40°C...85°C.
3.2. Control / Key function with "ignition on" (ZE)
Key
Signific
a
nce
Key function
T3 On/ Off key Switching the device on/off
T7 Blower Minus key Switching off blower
T8 Blower Plus key Switching on blower(max.
1 level for 5 minutes)
T1+T2
simulta-
neously
Temperature
request
Displays outdoor or indoor
temperature for 10 sec-
onds
T1+T8
simulta-
neously
Contrast Increasing contrast by 1
level
T7+T8
simulta-
neously
Temperature unit Temperature unit change-
over from °
C to °F and vice
versa
3.3. Key function with "Motor on" (ME) and active controller
Key
Significance
Key function
T1 Setpoint tempera-
ture Plus key
Increasing the setpoint temperature by 1°C or 1-2°F per key-
stroke
T2 Setpoint tempera-
ture Minus key
Reducing the setpoint temperature by 1°C or 1-2°F per key-
stroke
T3 On/Off key Switching the device on/off
T4 Economy (AC-lock) Locking the cooling function
T5 Automatic Activation of the automatic blower and recirculation control
T6 Recirculation key Switching between fresh air and recirculation mode
T7 Blower Minus key Reducing the manual blower level
T8 Blower Plus key Increasing the manual blower level
T1+T2 simulta-
neously
Temperature
request
Displays indoor temperature for 10 seconds, after pressing
again the keys the ambient temperature is displayed if an am-
bient sensor is installed (point 3.5.1)
T1+T8 simulta-
neously
Contrast Increasing contrast by 1 level (point 3.5.3)
T7+T8 simulta-
neously
Unit temperature Change-over temperature unit °C to °F and vice versa (point
3.5.2)
Attention! Setting data is only
saved if the engine or D+ is ON!

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3.4. Display function
Display
Significance
LCD Standard display Setpoint temperature
L1 Warning / Error display
L2 Air conditioner active
L3 Economy aktiv / Air conditioner locked
L4 Automatic blower and recirculation con-
trol active
L5 Manual blower control active
L6 Recirculation mode active
L7 Display blower level 0...4
4. Functional description KS40
4.1. Display
The setpoint temperature is displayed as the basic display
when the device is active. The display and keypad are backlit.
When the device is inactive, the display is dark with a flashing
decimal point.
When certain functions are called up, the corresponding in-
formation is briefly displayed.
During the test mode, the display is used for information out-
put.
4.2. Room temperature control
When the unit is active, the room temperature control starts after starting the engine. The desired
room temperature can be set using the plus/minus keys T1 and T2 . The adjustable temper-
ature range is 15°... 35°C or 59°... 95°F.
If a room temperature sensor error occurs ( on), the unit will operate at an equivalent value of
22°C. This makes operation possible despite an error (s. item 4).
The air conditioning system is controlled to the room temperature with a hysteresis of +/- 2K.
At outside temperatures below 5°C the cooling function remains disabled and above 7°C it is ena-
bled again. If no outdoor temperature sensor is connected, the cooling function is always possible.
The cooling function can be disabled via the "Economy" function. (Key T4 ).
4.3. Ventilation
When the unit is active and the motor is running, the plus/minus keys T7 and T8 can be
used to set the desired ventilation stage in 3 or 4 stages respectively.
Optionally, the automatic blower function can be activated by pressing the key T5 :
If the motor (D+ off) is switched off, the ventilation can only be activated on the smallest stage and
switches off completely after 5 minutes.
If the door signal is active, the ventilation is switched to the lowest level. After closing the door the
lowest level remains active for 10 seconds. Then, the controller returns to the previously set venti-
lation stage.

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4.4. Circulating air
After switching on the power supply, the recirculation mode is
switched on. When the motor is running, the function can be
switched over manually via key T6 .
The flap moves in 15 seconds into the set position.
Function when automatic control is switched on (T5
on):
Recirculation mode, if:
-no manual operation in the last 10 minutes AND
-ambient temperature > 35°C OR
-room above 4K too warm
Fresh air operation, if:
-no manual operation during the last 10 minutes AND
-ambient temperature < 33°C AND
-room too cold
4.5. Additional key functions
4.5.1. Temperature request
T1 T2 press simultaneously:
Pressing the key combination in the basic state (setpoint display), switches to the display of the
room temperature. Pressing the key combination again during the room temperature display,
switches to the outdoor temperature display.
The temperature display first shows 1 second "in" (room temperature) or "out" (outside tempera-
ture), then for 10 seconds the appropriate temperature.
4.5.2. Switchover unit °C / °F
Press T7 T8 simultaneously for 4 seconds:
Switching over the temperature unit immediately causes the setpoint and temperature to be dis-
played in the selected unit.
The internal processing of the setpoint value continues in Celsius degree steps. This is why the
Fahrenheit display usually jumps by 2 digits when adjusting the setpoint.
4.5.3. Contrast LCD
Press T1 T8 simultaneously:
Pressing the key combination switches the contrast of the LCD display up one level. When the
highest level 7 is reached, the display switches back to minimum contrast.
The factory setting is level 4.
4.6. Background functions
The background functions run automatically without operator intervention.
4.6.1. Procedures for switching on the power supply (KL15) ignition
After switching on the power supply, "314" is displayed for 1 second:
Stored settings are accepted:
- Setpoint temperature
- Operating status Auto/blower level or OFF
- Contrast LCD
- Temperature display mode Celsius/Fahrenheit
- Blower 3- or 4-stage
Attention! Setting data is only
saved if the engine or D+ is ON!

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Evaluation of the supply voltage 12/24V. The distinction threshold is 15.8V. The lighting bright-
ness is thereby adapted to the on-board voltage.
4.6.2. Operations when the motor is switched on/off (release D+/climate)
When the motor is switched on, the auto/blower stage state is taken over from the last setting. .
If no data is available (e.g. initial switch-on), the Auto function is activated.
When the motor is switched off, the blowers are switched back to stage 1 if the blower or auto
function is active. The flap moves to recirculation position.
In addition, the setting values are stored, if the data has been changed:
- Setpoint temperature
- Operating status Auto/blower level or OFF
- Contrast LCD
- Temperature display mode Celsius/Fahrenheit
- Blower 3- or 4-stage
4.6.3. Automatic blower configuration
The climate control can be operated with 3- or 4-stage units. The configuration is automatically
detected when the fans are switched on for the first time and saved when the motor is switched off.
5. Error handling diagnosis
During operation, the indoor temperature sensor is moni-
tored for cable break and short circuit, the outdoor tem-
perature sensor for short circuit.
If an error occurs, the symbol L1 ( ) is displayed in the
LCD.
When interrogating the temperature values, the character
sequence " 0-" is displayed in the case of a short circuit, a
cable break by " -0".
If the outdoor sensor is missing, "-84°C" is shown in the
display.
If a fault is detected in the interior sensor, the replacement value of 22°C is used in the tempera-
ture control and fan automatic. This allows emergency operation of the air-conditioning system by
adjusting the setpoint. At the setpoint setting ≤20°C the cooling mode is started. In the automatic
blower and recirculating air mode ( ) stage 2 or higher is activated. In the manual blower ad-
justment mode the stages 1 to max. 3 or 4 can be selected. The air-conditioning system is moni-
tored after the compressor is switched on.
When a fault occurs (high or low pressure), the compressor and the condenser fans are switched
off and remain locked until the ignition is switched off. The error is also indicated by the symbol L1
( ) in the LCD.
6. Maintenance / Service
Please arrange regular dates for maintenance works and services with a KONVEKTA service sta-
tion, as indicated in maintenance schedule bus no.: WP07050618.
- Only qualified staff is allowed to carry out these works! -
For general instructions on repair– and maintenance works please contact via email:
[e-mail]

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Danger of accidents!
Qualified staff in charge of installation and maintenance have to be trained in accordance with EN
378-Part 4 and (EC) No.307/2008 and must strictly follow the legal provisions.
Any works or modifications at the air conditioner which are carried out improperly can lead to mal-
function and so endanger operational reliability. We recommend having all works and modifica-
tions carried out at an authorized KONVEKTA Service Station.
Before carrying out any maintenance works at your air conditioning unit, carefully read the
KONVEKTA safety provisions (TD00052A

) in order to avoid any dangers and accidents!
1
On our website www.konvekta.com in category >service< you will find a survey of contact details of all our service
partners close to your location .

Source of supply: KONVEKTA AG, P.O. Box 2280, D-34607 Schwalmstadt
6.1. Troubleshooting
– Only qualified staff is allowed to carry out these works! –
Trouble Cause Repair by authorized Service Station only
a/c is not
running
thermostat open
−
check inside temperature
1
−re-adjust thermostat
1
electric connection disconnected
−
check electric connections at switchboard
relay defective
−
check relay, replace if necessary
defrost thermostat has switched off
−
check evaporator blower, replace if neces-
sary
outside temperature too low (possible
icing of evaporator)
−
switch on „ventilation“ only
evaporator coil dirty
−
clean evaporator coil with compressed air
magnetic clutch
−
check connections at magnetic clutch
compressor does not compress
−
check high and low pressure, replace com-
pressor if necessary
excess pressure (pressure too high)
−
check axial fans
−check fuses at switchboard
−clean condenser coil with compressed air
excess pressure caused by high out-
side temperature
−
run unit until pressure has stabilized
1
leakage in a/c unit, lack of refrigerant
−
check a/c unit for leakages
−refill refrigerant
low pressure, screen of expansion
valve clogged
−
clean screen; replace dryer
Loud noise
at compres-
sor
defective bearing at compressor
−
replace either bearing or entire compressor
slack V-belt
−
check V-belt at compressor drive
1
Durch Betreiber
7. Warranty Conditions
The current „General Warranty Conditions” KONVEKTA AG“ will apply. A copy will be furnished by
the warranty department. Please contact [email protected].

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8. Waste disposal in accordance with legal provisions
After the phase of use the last proprietor is responsible for the adequate waste manage-
ment. The environmental regulations in the exporting country must be observed.
The following list contains the most important regulating literature, valid for the Federal Rep. of
Germany:
•
Resolution for dangerous substances
•Law for waste circulation (KRW/AfgG))
•Resolution for the proofs of utilization
and removal
•Criminal Code (StGB) 28th section „cri-
minal acts against the environment”
§326 - Environment jeopardizing waste
management
•Law of chemicals § 27 - penal prescrip-
tions
•
Resolution for used oil
•Law of water balance
•Resolution for the waste management of old
cars and the adaptation of road prescriptions
•Resolution (EC) No. 2037/2000 of the Euro-
pean Parliament and of the Council for mate-
rials that affect the ozone layer
•Resolution to prohibit certain ozone destroying
halogen hydrocarbons.
The used refrigerant endangers the environment. When dealing with refrigerants the existing pre-
scriptions and regulations are to be followed. Only qualified staff is allowed to carry out these
works!
Water endangering substances - acc. to §§19g-19l - are solid, liquid, and gaseous substances.
e.g.: mineral and tar oils (cooling oils), halogen containing organic combinations (refrigerants).

Source of supply:
- Bundesanzeiger
- Beuth Verlag
- dtv (Deutscher Taschenbuch Verlag
9. History of modification
Vers
i
on
Dat
e
Name
Remark
File
A00 06.02.2019 B Keßler Source file BAKL9T0102A