WELBA RM-20 User manual

Exchange Milking Control
for the installation into the
Westfalia rinsing machine TURBOSTAR
RM-20
Repair kit for
- rear derailleur
- time relay
- mech. thermostats
- level controller
Installation and
Operating Instructions*
welba.de
Measuring - Controlling - Regulating
All from the same source
* the latest version of the operating instructions
can be found on our website.
RM-20 104180 02/2022 - V0.8
Firmware V08

Page 3Page 2
Contents Intended use
These operating instructions contain important technical
and safety information.
Please read carefully before installation and before any
work on or with the regulator.
The RM-20 must be installed by an authorised specia-
list observing local safety regulations.
Access to the environment when connected must be
restricted to specialised personnel.
The RM-20 contains live components and must not be
opened up.
lt must not be used if the housing or connection
terminals are damaged.
No fluids must penetrate the housing.
The exchange milking system control RM-20 is exclusively intended
for the installation into Westfalia rinsing machines, type Turbostar, in
order to replace the mechanical switching mechanism. It is used to
control vacuum pumps, solenoid valves, heaters and dosing pumps in
milking plants. Any other use of the device is permitted only with prior
written permission from the manufacturer.
The universal milking control is ready for use once the parameters
have been set. lt should not be used before this has been done as this
might result in damage to the plant and the item to be cleaned.
The device is fitted with a resistance temperature sensor
The device must not be installed in potentially explosive
atmospheres. The universal milking control type RM-20 fulfils
the EC requirements for electromagnetic compatibility (EMC)
and the Low Voltage Directive (LVD).
The safety components meet the VDE regulations.
Satefty
Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Appliance description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Procedure for installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Functional test after installation . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Electronics terminal plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Flow chart cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Description of program steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Description of flow chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
------------------------------------------------------------------------------------------
Parameterization
Working level description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Operation of the working level . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Adjustment of parameters in general . . . . . . . . . . . . . . . . . . . . . . 22
Level “Plant parameters” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Level “Service parameters” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Level “Error memory” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Error codes on the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
RM-20 106180-E 02/2022 - V0.8RM-20 106180-E 02/2022 - V0.8

Page 3Page 2
Contents Intended use
These operating instructions contain important technical
and safety information.
Please read carefully before installation and before any
work on or with the regulator.
The RM-20 must be installed by an authorised specia-
list observing local safety regulations.
Access to the environment when connected must be
restricted to specialised personnel.
The RM-20 contains live components and must not be
opened up.
lt must not be used if the housing or connection
terminals are damaged.
No fluids must penetrate the housing.
The exchange milking system control RM-20 is exclusively intended
for the installation into Westfalia rinsing machines, type Turbostar, in
order to replace the mechanical switching mechanism. It is used to
control vacuum pumps, solenoid valves, heaters and dosing pumps in
milking plants. Any other use of the device is permitted only with prior
written permission from the manufacturer.
The universal milking control is ready for use once the parameters
have been set. lt should not be used before this has been done as this
might result in damage to the plant and the item to be cleaned.
The device is fitted with a resistance temperature sensor
The device must not be installed in potentially explosive
atmospheres. The universal milking control type RM-20 fulfils
the EC requirements for electromagnetic compatibility (EMC)
and the Low Voltage Directive (LVD).
The safety components meet the VDE regulations.
Satefty
Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Appliance description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Procedure for installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Functional test after installation . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Electronics terminal plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Flow chart cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Description of program steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Description of flow chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
------------------------------------------------------------------------------------------
Parameterization
Working level description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Operation of the working level . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Adjustment of parameters in general . . . . . . . . . . . . . . . . . . . . . . 22
Level “Plant parameters” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Level “Service parameters” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Level “Error memory” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Error codes on the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
RM-20 106180-E 02/2022 - V0.8RM-20 106180-E 02/2022 - V0.8

2
1 3
Appliance description
Page 5
RM-20 106180-E 02/2022 - V0.8
Page 4 RM-20 106180-E 02/2022 - V0.8
The RM-20 is an exchange control as replacement of
defective timers in the Westfalia "TURBOSTAR" rinsing
machines. Furthermore, the exchange control is also
suitable for the replacement of relays, the level control-
lers and the mechanical thermostats. (For the replace-
ment of the mechanical thermostats it is necessary to
order the optional temperature sensor "TF-1A").
After the installation of the
RM-20 button 1 replaces
the old rotary switch.
The RM-20 is installed in the existing stainless-steel box
and is invisible to the user. Only for the start of the clean-
ing process, start button 1 is installed which is included in
the scope of delivery. The selection of the operating
modes is still made via the operating mode selector
switch 2. The green operating lamp indicates by different
flashing frequencies during the cleaning process in
which rinsing process the control is currently working.
The RM-20 milking system control distinguishes between three different
operating modes:
!OFF mode
The operating mode selector switch 2 is on position “0”.
Both lamps are off. All output relays are deactivated.
ATTENTION:
Even when switched off, the control is under voltage!
!Mode MILKING
The operating mode selector switch 2 is on position “COW”.
The vacuum pump is switched on via the control.
!Mode CLEANING
The operating mode selector switch 2 is on position “TANK”.
The green lamp flashes permanently and signals: READY TO START.
!Press start button 1 “briefly”:
The rinsing program starts and runs the complete program.
!“Hold” start button 1 until the green lamp flashes:
Only the last rinsing (after-rinse) is performed.
The wash timer automatically controls the water dosage. The running
times from the heating, the pump and the detergent are pre-set at the
factory.
The various processes and times for careful cleaning are controlled
fully automatically by the RM-20.
When the cleaning is complete and faultless, this is finally indicated by
a slow flashing of the green lamp.
After a power failure:
!during the modes OFF or MILKING: The control starts in the mode
in which it was before the power failure
!)during the mode CLEANING: The green lamp flashes and signal-
ises: Error! (Restart only possible via position “0”).
Installation
Scope of delivery
Disposal
Incorrect electrical connection can cause damage to
the tank control and to the equipment.
The mains voltage should not be switched on until all
components including the sensor are connected.
No appliances with current levels in excess of the
maximum values indicated on the relays should be
connected to the relay contacts
For the purposes of disposal, the device is classified as waste
electronic equipment within the meaning of European Directive
2002/96/EC (WEEE) and must not be included with household waste.
It must be disposed of through the correct channels.
Local and current legislation must be observed.
!Exchange control with wiring harness
!Start button
!Protective cap for start button
!Installation and operating instruction

2
1 3
Appliance description
Page 5
RM-20 106180-E 02/2022 - V0.8
Page 4 RM-20 106180-E 02/2022 - V0.8
The RM-20 is an exchange control as replacement of
defective timers in the Westfalia "TURBOSTAR" rinsing
machines. Furthermore, the exchange control is also
suitable for the replacement of relays, the level control-
lers and the mechanical thermostats. (For the replace-
ment of the mechanical thermostats it is necessary to
order the optional temperature sensor "TF-1A").
After the installation of the
RM-20 button 1 replaces
the old rotary switch.
The RM-20 is installed in the existing stainless-steel box
and is invisible to the user. Only for the start of the clean-
ing process, start button 1 is installed which is included in
the scope of delivery. The selection of the operating
modes is still made via the operating mode selector
switch 2. The green operating lamp indicates by different
flashing frequencies during the cleaning process in
which rinsing process the control is currently working.
The RM-20 milking system control distinguishes between three different
operating modes:
!OFF mode
The operating mode selector switch 2 is on position “0”.
Both lamps are off. All output relays are deactivated.
ATTENTION:
Even when switched off, the control is under voltage!
!Mode MILKING
The operating mode selector switch 2 is on position “COW”.
The vacuum pump is switched on via the control.
!Mode CLEANING
The operating mode selector switch 2 is on position “TANK”.
The green lamp flashes permanently and signals: READY TO START.
!Press start button 1 “briefly”:
The rinsing program starts and runs the complete program.
!“Hold” start button 1 until the green lamp flashes:
Only the last rinsing (after-rinse) is performed.
The wash timer automatically controls the water dosage. The running
times from the heating, the pump and the detergent are pre-set at the
factory.
The various processes and times for careful cleaning are controlled
fully automatically by the RM-20.
When the cleaning is complete and faultless, this is finally indicated by
a slow flashing of the green lamp.
After a power failure:
!during the modes OFF or MILKING: The control starts in the mode
in which it was before the power failure
!)during the mode CLEANING: The green lamp flashes and signal-
ises: Error! (Restart only possible via position “0”).
Installation
Scope of delivery
Disposal
Incorrect electrical connection can cause damage to
the tank control and to the equipment.
The mains voltage should not be switched on until all
components including the sensor are connected.
No appliances with current levels in excess of the
maximum values indicated on the relays should be
connected to the relay contacts
For the purposes of disposal, the device is classified as waste
electronic equipment within the meaning of European Directive
2002/96/EC (WEEE) and must not be included with household waste.
It must be disposed of through the correct channels.
Local and current legislation must be observed.
!Exchange control with wiring harness
!Start button
!Protective cap for start button
!Installation and operating instruction

Page 7Page 6
Procedure for installation
Disconnect the entire system from the power supply
and secure it against an unintentional restart!
Procedure for installation
The following describes how the exchange milking control RM-20 is
installed and connected to the existing TURBOSTAR rinsing machine.
Proceed as follows:
!Remove all red and white cables from the control.
!Remove the blue cables for the time- and level relays.
!Remove from the top of the terminal block X1 the cable
bridge (blue) from terminal 10 to 23.
!Remove the level relay 4.
!Remove the three existing timers 5.
!Disassemble the existing rear derailleur 1
Access to the connected environment
is only permitted for qualified personnel !
Remove the old cables and components
!Fit the push button supplied into the hole in which the
rear derailleur was previously installed.
!Install the push button protection cap.
!Close the two small holes next to the push button with
the screws / nuts supplied.
!Check if the cable connection (blue) of terminal block
X1 clamp 20 to terminal block 1x1 clamp “N” does exist,
if not: Please install it.
!Check if the cable connection (blue) of terminal block
1x1 clamp “N”
- to contactor 1K11 clamp “A2”
- further on to contactor 1K12 clamp “A2”
- further on to dosing pump M11 and M12
does exist - if not: Please install it.
!Check if the cable connection 6 (blue) of the pneumatic
valves (Y13 - Y15) to the terminal block X1 clamp 21
does exist - if not: Please install it.
Installation of the new components
2
2
4
1
4
5
5
Attention:
If installed - the 24-hour timer
will remain in the unit.
The wiring heating / contactors
3 will remain in the unit
6
!Unscrew the cover of the exchange control and install
the plastic housing into the stainless steel box onto the
upper top-hat rail.
!Plug all the cable shoes of the new cable harness sup-
plied onto the corresponding components according to
their labelling.
See next pages.
Do not pay attention to unused cables (e.g. optional
timer).
ATTENTION: The existing cables remain
partially preserved! Follow the instruc-
tions described below EXACTLY!
3
! Remove the complete wiring harness 2.
!ATTENTION
DO NOT REMOVE the cables of external system components con-
nected at the bottom of the terminal block X1 !
EXCEPTION: The following cable bridges must be removed from
the bottom of the terminal block X1:
- 7/8
- 11/12
- 13/14
- 15/16
!Open the rinsing machine and remove the cover.
X1X1X1
2
RM-20 106180-E 02/2022 - V0.8RM-20 106180-E 02/2022 - V0.8

Page 7Page 6
Procedure for installation
Disconnect the entire system from the power supply
and secure it against an unintentional restart!
Procedure for installation
The following describes how the exchange milking control RM-20 is
installed and connected to the existing TURBOSTAR rinsing machine.
Proceed as follows:
!Remove all red and white cables from the control.
!Remove the blue cables for the time- and level relays.
!Remove from the top of the terminal block X1 the cable
bridge (blue) from terminal 10 to 23.
!Remove the level relay 4.
!Remove the three existing timers 5.
!Disassemble the existing rear derailleur 1
Access to the connected environment
is only permitted for qualified personnel !
Remove the old cables and components
!Fit the push button supplied into the hole in which the
rear derailleur was previously installed.
!Install the push button protection cap.
!Close the two small holes next to the push button with
the screws / nuts supplied.
!Check if the cable connection (blue) of terminal block
X1 clamp 20 to terminal block 1x1 clamp “N” does exist,
if not: Please install it.
!Check if the cable connection (blue) of terminal block
1x1 clamp “N”
- to contactor 1K11 clamp “A2”
- further on to contactor 1K12 clamp “A2”
- further on to dosing pump M11 and M12
does exist - if not: Please install it.
!Check if the cable connection 6 (blue) of the pneumatic
valves (Y13 - Y15) to the terminal block X1 clamp 21
does exist - if not: Please install it.
Installation of the new components
2
2
4
1
4
5
5
Attention:
If installed - the 24-hour timer
will remain in the unit.
The wiring heating / contactors
3 will remain in the unit
6
!Unscrew the cover of the exchange control and install
the plastic housing into the stainless steel box onto the
upper top-hat rail.
!Plug all the cable shoes of the new cable harness sup-
plied onto the corresponding components according to
their labelling.
See next pages.
Do not pay attention to unused cables (e.g. optional
timer).
ATTENTION: The existing cables remain
partially preserved! Follow the instruc-
tions described below EXACTLY!
3
! Remove the complete wiring harness 2.
!ATTENTION
DO NOT REMOVE the cables of external system components con-
nected at the bottom of the terminal block X1 !
EXCEPTION: The following cable bridges must be removed from
the bottom of the terminal block X1:
- 7/8
- 11/12
- 13/14
- 15/16
!Open the rinsing machine and remove the cover.
X1X1X1
2
RM-20 106180-E 02/2022 - V0.8RM-20 106180-E 02/2022 - V0.8

S4
(w / blk)
S1
(w / trp)
S3
(gr / pk / br)
H11
(bl / trp)
H12
(rd / bl)
S2
(w / bl / rd
Ground bar
casing
(w)
Terminal strip 1X1
(blk)
Terminal strip X1
(according to the wiring diagram)
B13
(br / w)
K11
(w)
K12
(w)
B12
(org / w)
Y11
(gr)
Y12
(rd
Y13
(w)
Y14
(viol)
Y15
(rd/w)
M11
(pk)
M12
(br)
E1
(bl/w)
E2
(rd/w)
right
left
middle
Page 9Page 8
Procedure for installation Procedure for installation
Terminal strip 1X1
S1 - Start button
(cable transp./white)
S4 - Button
sponge valve
(cable white/black)
S2 - Selector switch
milking/cleaning
(cable red/blue/white)
S3 - Selector switch
alkaline/acidic
(Cable pink/brown/grey)
Connect the new wiring harness
according to the connection diagram / wiring diagram
H11 - Lamp green (cable transp./blue)
H12 - Lamp red (cable red/blue)
Wiring harness on the left
Middle wiring harness
Terminal strip X1
RM-20 Connection diagram
23.03.2016
23.03.2016
RM-20 Wiring diagram
H12 H11
S1
S2
S3 S4
RM-20
right
left
Y13
w
Circulation
valve
Y14
Suction
valve
viol
Y15
Ventilation
valve
rd/w
br
acid
N
Level
switch
B13
1
br
3
K11
A1
A2
K12
A1
A2
w
Heater
contactors
N
16 17 24
H11
H12
trp
rd
22
bl
Lamp green
Lamp red
Operation
Fault
rd/w
org
910 11 12 13 14
br
gr
S2
1a
12
cleaning milking
rd
bl
w
w
S4
1
2
bl
Button
sponge
valve
1
2
w
trp
Start button
E1
E2
Level
bl/w
rd/w
Ground bar
casing
1 2 3 456
w/ye
23
bl
Terminal strip X1
middle
to 1H11
Switch
alkaline/acid
12
gr
br
pk
S3
bl
S1
Selector
switch
blk
viol
Terminal strip 1X1
L1 L2 L3 N N L
blk
PE
w
boil-dry
protection
alkaline
M12
M11
Dosing pumps
existing
wiring
N
11
B12
w
12
14
org
Thermostat
Y11
Cold
water
valve
rd
Y12
gr
N
Warm
water
valve
7815
20
2118 19
bl/w
pk
trp
w
w
w
ATTENTION:
Use normally
open contact
with thermostat
1B12
existing
wiring
existing
wiring
existing
wiring
pk
RM-20 106180-E 02/2022 - V0.8RM-20 106180-E 02/2022 - V0.8

S4
(w / blk)
S1
(w / trp)
S3
(gr / pk / br)
H11
(bl / trp)
H12
(rd / bl)
S2
(w / bl / rd
Ground bar
casing
(w)
Terminal strip 1X1
(blk)
Terminal strip X1
(according to the wiring diagram)
B13
(br / w)
K11
(w)
K12
(w)
B12
(org / w)
Y11
(gr)
Y12
(rd
Y13
(w)
Y14
(viol)
Y15
(rd/w)
M11
(pk)
M12
(br)
E1
(bl/w)
E2
(rd/w)
right
left
middle
Page 9Page 8
Procedure for installation Procedure for installation
Terminal strip 1X1
S1 - Start button
(cable transp./white)
S4 - Button
sponge valve
(cable white/black)
S2 - Selector switch
milking/cleaning
(cable red/blue/white)
S3 - Selector switch
alkaline/acidic
(Cable pink/brown/grey)
Connect the new wiring harness
according to the connection diagram / wiring diagram
H11 - Lamp green (cable transp./blue)
H12 - Lamp red (cable red/blue)
Wiring harness on the left
Middle wiring harness
Terminal strip X1
RM-20 Connection diagram
23.03.2016
23.03.2016
RM-20 Wiring diagram
H12 H11
S1
S2
S3 S4
RM-20
right
left
Y13
w
Circulation
valve
Y14
Suction
valve
viol
Y15
Ventilation
valve
rd/w
br
acid
N
Level
switch
B13
1
br
3
K11
A1
A2
K12
A1
A2
w
Heater
contactors
N
16 17 24
H11
H12
trp
rd
22
bl
Lamp green
Lamp red
Operation
Fault
rd/w
org
910 11 12 13 14
br
gr
S2
1a
12
cleaning milking
rd
bl
w
w
S4
1
2
bl
Button
sponge
valve
1
2
w
trp
Start button
E1
E2
Level
bl/w
rd/w
Ground bar
casing
1 2 3 456
w/ye
23
bl
Terminal strip X1
middle
to 1H11
Switch
alkaline/acid
12
gr
br
pk
S3
bl
S1
Selector
switch
blk
viol
Terminal strip 1X1
L1 L2 L3 N N L
blk
PE
w
boil-dry
protection
alkaline
M12
M11
Dosing pumps
existing
wiring
N
11
B12
w
12
14
org
Thermostat
Y11
Cold
water
valve
rd
Y12
gr
N
Warm
water
valve
7815
20
2118 19
bl/w
pk
trp
w
w
w
ATTENTION:
Use normally
open contact
with thermostat
1B12
existing
wiring
existing
wiring
existing
wiring
pk
RM-20 106180-E 02/2022 - V0.8RM-20 106180-E 02/2022 - V0.8

Page 11Page 10
Procedure for installation Procedure for installation
Wiring harness on the right
Y11 - Cold water valve (grey/blue cable)
Y12 - Hot water valve (red/blue cable)
Y13 - Circulation valve (cable white/blue)
Y14 - Suction valve (violet/blue cable)
Y15 - Ventilation valve (red/white/blue wire)
E1 - Level (cable blue/white)
E2 - Level (cable red/white)
1B13 - Level switch (cable white/brown)
M11 - Dosing pump (cable pink/blue)
M12 - Dosing pump (cable brown/blue)
1B12 - Thermostat (orange/white wire)
K11 - Heater contactor
K12 - Heater contactor
M12
M11
Y13 Y14 Y15
Y12 Y11
Carry out a function test - as described on the next page
1B13
ATTENTION: Use normally open
contact with thermostat 1B12!
RM-20 106180-E 02/2022 - V0.8RM-20 106180-E 02/2022 - V0.8

Page 11Page 10
Procedure for installation Procedure for installation
Wiring harness on the right
Y11 - Cold water valve (grey/blue cable)
Y12 - Hot water valve (red/blue cable)
Y13 - Circulation valve (cable white/blue)
Y14 - Suction valve (violet/blue cable)
Y15 - Ventilation valve (red/white/blue wire)
E1 - Level (cable blue/white)
E2 - Level (cable red/white)
1B13 - Level switch (cable white/brown)
M11 - Dosing pump (cable pink/blue)
M12 - Dosing pump (cable brown/blue)
1B12 - Thermostat (orange/white wire)
K11 - Heater contactor
K12 - Heater contactor
M12
M11
Y13 Y14 Y15
Y12 Y11
Carry out a function test - as described on the next page
1B13
ATTENTION: Use normally open
contact with thermostat 1B12!
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Page 13
Test of the outputs
Parameter “t1” (cold water valve) is displayed.
With the arrow keys all outputs [t1 to t13] can be selected and test as
follows:
!Select the required parameter with the arrow keys.
!Press the SET-button und hold it: The display shows “0” or “1”
(depending on the present adjustment of the corresponding
parameter).
!Hold the SET-button and change the setting with the arrow key.
The component selected (example cold water valve) is switched
on or off.
When the SET-button is released, the component remains switched
on, until it is manually switched off again in the same way.
That makes it possible to switch on different components at the
same time.
t1 cold water valve
t2 hot water valve
t3 breast pump
t4 vacuum pump
t5 heating
t6 pneumatic bypass valve
t7 pneumatic suction valve
t8 pneumatic release valve
t9 dosing pump
t10 vacuum increase
t11 sponge valve
t12 signal lamp green
t13 signal lamp redt14 unused
Check the correct wiring (one after another) of
the following outputs:
Functional test after installation
SET
Page 12
Functional test after installation
After all cables are plugged according to their
labelling, check the function of all inputs and
outputs as described below.
!Switch the selector switch “milking/cleaning”
to position “0”.
!Energise the system
The exchange control RM-20 performs a self-
test. The display shows “OFF”.
Note:
After approx. 1 hour, the display goes out. When
pressing the key, the display lights up again
A function check prior the commissioning is of highest
importance!!!
SET
The function test may only be performed by an
authorised specialist.
Switch back to the operating level:
(The switching back is possible from each parameter).
!Press UP- and DOWN button simultaneously for about 5
seconds.
RM-20 106180-E 02/2022 - V0.8RM-20 106180-E 02/2022 - V0.8
Enter code ‘5-6-7’ :
!Press the two arrow keys simultaneously for approx. 5 seconds. A
request to enter the code follows.
!The display shows “000” - the first “0” flashes.
!Adjust with the arrow keys the first digit “5” and confirm with “SET”.
The second “0” flashes.
!Adjust with the arrow keys the second digit “6” and confirm with
“SET”. The third “0” flashes.
!Adjust with the arrow keys the third digit “7” and confirm with
“SET”. The first parameter “t1” appears.
If an incorrect code was entered, the control goes back to the OFF-
mode.
Check if the wiring is correct as described on the next two pages.

Page 13
Test of the outputs
Parameter “t1” (cold water valve) is displayed.
With the arrow keys all outputs [t1 to t13] can be selected and test as
follows:
!Select the required parameter with the arrow keys.
!Press the SET-button und hold it: The display shows “0” or “1”
(depending on the present adjustment of the corresponding
parameter).
!Hold the SET-button and change the setting with the arrow key.
The component selected (example cold water valve) is switched
on or off.
When the SET-button is released, the component remains switched
on, until it is manually switched off again in the same way.
That makes it possible to switch on different components at the
same time.
t1 cold water valve
t2 hot water valve
t3 breast pump
t4 vacuum pump
t5 heating
t6 pneumatic bypass valve
t7 pneumatic suction valve
t8 pneumatic release valve
t9 dosing pump
t10 vacuum increase
t11 sponge valve
t12 signal lamp green
t13 signal lamp redt14 unused
Check the correct wiring (one after another) of
the following outputs:
Functional test after installation
SET
Page 12
Functional test after installation
After all cables are plugged according to their
labelling, check the function of all inputs and
outputs as described below.
!Switch the selector switch “milking/cleaning”
to position “0”.
!Energise the system
The exchange control RM-20 performs a self-
test. The display shows “OFF”.
Note:
After approx. 1 hour, the display goes out. When
pressing the key, the display lights up again
A function check prior the commissioning is of highest
importance!!!
SET
The function test may only be performed by an
authorised specialist.
Switch back to the operating level:
(The switching back is possible from each parameter).
!Press UP- and DOWN button simultaneously for about 5
seconds.
RM-20 106180-E 02/2022 - V0.8RM-20 106180-E 02/2022 - V0.8
Enter code ‘5-6-7’ :
!Press the two arrow keys simultaneously for approx. 5 seconds. A
request to enter the code follows.
!The display shows “000” - the first “0” flashes.
!Adjust with the arrow keys the first digit “5” and confirm with “SET”.
The second “0” flashes.
!Adjust with the arrow keys the second digit “6” and confirm with
“SET”. The third “0” flashes.
!Adjust with the arrow keys the third digit “7” and confirm with
“SET”. The first parameter “t1” appears.
If an incorrect code was entered, the control goes back to the OFF-
mode.
Check if the wiring is correct as described on the next two pages.

Page 14
Test of inputs
With the arrow keys all inputs [t21 to t32] can be selected and tested as
follows:
!Select the required parameter with the arrow keys.
!Press SET-button: The display shows “0” or “1” (depending on the
present adjustment of the corresponding parameter).
!Change of switching status (e.g. start button). The display switches
back and forth between “0” and “1”.
!Press SET-button once again: The display shows the present
parameter name again
After completion of the function test, the control must be
parameterised as described below.
Commissioning without the corresponding parameter
setting is not advisable and may also cause damage to the
milking system.
Functional test after installation
Switch back to the operating level:
(The switching back is possible from each parameter).
!Switch selector switch "Milking/Cleaning" to position "0":
!Press UP- and DOWN button simultaneously for about 5
seconds. The display shows “OFF
Page 15
Electronics terminal plan
The maximum possible switching current of relays K1
to K11 is 230V / 6 A AC1
The two semi-conductor switches (terminals 22/23)
may only be used to control the existing indicator
lamps of the control.
The digital inputs (terminals 1 to 8) may only be con-
nected with the potential provided on terminal "GND".
Only potential-free contacts may be used for the
switching process.
t21 Rotary switch position "cleaning"
t22 Rotary switch position "milking"
t23 "Milking parlor" switch (external remote start)
t24 Safety switch *
t25 Button sponge valve
t26 Start button
t27 Unused
t28 Timer input (if present)
t29 Temperature 1 (sensor or digital input)**
t30 Temperature 2 (unused)**
t31 Level 1 down***
t32 Level 2 above***
Check the correct wiring (one after another) of the
following inputs:
* 0 = no release
1 = release
** 0 = temperature not achieved
1 = temperature achieved
*** 0 = no level
1 = level achieved
SET
With parameter C90 it can be set that the rinse
cycles can be advanced by one step at a time.
The program sequence of the exchange milking control RM-
20 is pre-parameterised at the factory and is suitable for the
most common systems. However, adjustments or fine adjust-
ments can be made at any time.
Note
SET
Stard button
unused
Temperature 1
Display
230VAC +/-10%
50/60 Hz
Lamp red
Lamp green
Warm water
Cold water
Water withdrawal
Air intake
Circulation
vacuum increase
K1
K2
K3
K4
K5
K6
K7
K8
K9
K13
K14
K10
GND
K12
K11
unused
Sponge valve
Heater
Dosing pump
L1
Vacuum pump
Milk pump
Level E2 (above)
Level E1 (below)
Cleaning active
Milking active
Remote stard milking
Safety blkitch
Button sponge valve
Timer
unused
Digital inputs
trp
rd
blk
org
RM-20
21
2223
24 20 17
18
19 16 A1 b
b
15 a
aNL1112
gr
w
viol
rd/w
blk
pk
trp
bl/w
br
blk
gr
rd
bl
13
14 13
14
10 9
Sen1
876 5 432 1
Sen2
Lev1
Lev2
rd/w
bl/w
org
br
trp
blk
viol
gr
bl
rd
w/ye
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Page 14
Test of inputs
With the arrow keys all inputs [t21 to t32] can be selected and tested as
follows:
!Select the required parameter with the arrow keys.
!Press SET-button: The display shows “0” or “1” (depending on the
present adjustment of the corresponding parameter).
!Change of switching status (e.g. start button). The display switches
back and forth between “0” and “1”.
!Press SET-button once again: The display shows the present
parameter name again
After completion of the function test, the control must be
parameterised as described below.
Commissioning without the corresponding parameter
setting is not advisable and may also cause damage to the
milking system.
Functional test after installation
Switch back to the operating level:
(The switching back is possible from each parameter).
!Switch selector switch "Milking/Cleaning" to position "0":
!Press UP- and DOWN button simultaneously for about 5
seconds. The display shows “OFF
Page 15
Electronics terminal plan
The maximum possible switching current of relays K1
to K11 is 230V / 6 A AC1
The two semi-conductor switches (terminals 22/23)
may only be used to control the existing indicator
lamps of the control.
The digital inputs (terminals 1 to 8) may only be con-
nected with the potential provided on terminal "GND".
Only potential-free contacts may be used for the
switching process.
t21 Rotary switch position "cleaning"
t22 Rotary switch position "milking"
t23 "Milking parlor" switch (external remote start)
t24 Safety switch *
t25 Button sponge valve
t26 Start button
t27 Unused
t28 Timer input (if present)
t29 Temperature 1 (sensor or digital input)**
t30 Temperature 2 (unused)**
t31 Level 1 down***
t32 Level 2 above***
Check the correct wiring (one after another) of the
following inputs:
* 0 = no release
1 = release
** 0 = temperature not achieved
1 = temperature achieved
*** 0 = no level
1 = level achieved
SET
With parameter C90 it can be set that the rinse
cycles can be advanced by one step at a time.
The program sequence of the exchange milking control RM-
20 is pre-parameterised at the factory and is suitable for the
most common systems. However, adjustments or fine adjust-
ments can be made at any time.
Note
SET
Stard button
unused
Temperature 1
Display
230VAC +/-10%
50/60 Hz
Lamp red
Lamp green
Warm water
Cold water
Water withdrawal
Air intake
Circulation
vacuum increase
K1
K2
K3
K4
K5
K6
K7
K8
K9
K13
K14
K10
GND
K12
K11
unused
Sponge valve
Heater
Dosing pump
L1
Vacuum pump
Milk pump
Level E2 (above)
Level E1 (below)
Cleaning active
Milking active
Remote stard milking
Safety blkitch
Button sponge valve
Timer
unused
Digital inputs
trp
rd
blk
org
RM-20
21
2223
24 20 17
18
19 16 A1 b
b
15 a
aNL1112
gr
w
viol
rd/w
blk
pk
trp
bl/w
br
blk
gr
rd
bl
13
14 13
14
10 9
Sen1
876 5 432 1
Sen2
Lev1
Lev2
rd/w
bl/w
org
br
trp
blk
viol
gr
bl
rd
w/ye
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Page 17
Description of program stepsFlow chart cleaning
Page 16
see C30
see C13
see C14
Cleaning stage
Program step
Cleaning cycle
P21P10 P11 P12 P13 P14 P15 P20 P23P22 P25P24 P27P26 P28 P31P30 P32 P34P33 P35 P37P36
Main-rinse
see C35
Lev2 Lev2 Lev2 Lev2 Lev2 Lev2 Lev2 Lev2 Lev2
Program step
Pre-rinse (cold) Main-rinse After-rinse (cold)
Vacuum pump
Vacuum increase
Cold water
Warm water
Dosing
Y13 Circulation
Y14 Suction
Y15 Ventilation
Heater
Milk pump
Sponge valve
Lev1 = Below the lower level
Lev2 = Reached the upper level
T1 = Target temperature
Heat at/after
Timeout at
Generates flushing
Number adjustable in C31
Warm-up time
C10
Temperature reached
C11 timed out
Circulation time
C12
Within this time, the system is automatically
filled with water and flushing is generated
Generates flushing
Number adjustable in C32
Cleaning stage 1 (Pre-rinse) Range Default
P10 intake of cold water up to level 2 Timeout C20 10 min.
Skips P11, as level 2 has already been achieved.
P11 intake of warm water up to level 2 Timeout C20 10 min.
In C30 “cold water only” can be adjusted to 2.
P12 extraction up to level 1 Timeout C21 10 min.
If the water level falls below level 1, a step back to P11 takes
place to get another water intake. This process is repeated
until the set number of water intakes C31 is achieved.
Then the control continues to programme step P13.
P13 Extraction time C3 15 sec.
P14 Draining C4 180 sec.
P15 Final pumping C7 30 sec.
Cleaning stage 2 (Main-rinse)
P20 Intake of warm water up to level 2 Timeout C20 10 min.
P21 Overfilling C8 0 sec.
Water continues to run after achieving level E2
for time C8 to have more water available for the
first rinse.
P22 Dosing of detergent C1 120 sec.
P23 Heating up to temperature T1 Timeout C22 10 min.
Skips P24, as level 2 is already achieved.
P24 Intake of warm water up to level 2 after delay C13 Timeout C20 10 min.
If level 2 is achieved by the water flowing back from
the circulation, the control continues to P25.
P25 Extraction up to level 1 Timeout C21 10 min.
If the water level falls below level 1, further water pulses are
sent through the milking system until all criteria of the main
rinse are fulfilled. Now the control continues to program
step P26 (see also page 19)
P26 Extraction time C3 15 sec.
P27 Draining C4 180 sec.
P28 Final pumping C7 30 sec.
Cleaning stage 3 (After-rinse)
P30 Intake of cold water up to level 2 Timeout C20 10 min.
Skips P31, as level 2 is achieved.
P31 Intake of cold water up to level 2 Timeout C20 10 min.
P32 Extraction up to level 1 Timeout C21 10 min.
If the water level falls below level 1, a step back to P31
takes place to get another water intake. This process is
repeated until the set number of water intakes C32 is
achieved. Then the control continues to programme
step P33.
P33 Extraction time C3 15 sec.
P34 Draining C4 180 sec.
P35 Sponge valve C5 0 sec.
P36 Break/draining C6 120 sec.
P37 Final pumping C7 30 sec.
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Page 17
Description of program stepsFlow chart cleaning
Page 16
see C30
see C13
see C14
Cleaning stage
Program step
Cleaning cycle
P21P10 P11 P12 P13 P14 P15 P20 P23P22 P25P24 P27P26 P28 P31P30 P32 P34P33 P35 P37P36
Main-rinse
see C35
Lev2 Lev2 Lev2 Lev2 Lev2 Lev2 Lev2 Lev2 Lev2
Program step
Pre-rinse (cold) Main-rinse After-rinse (cold)
Vacuum pump
Vacuum increase
Cold water
Warm water
Dosing
Y13 Circulation
Y14 Suction
Y15 Ventilation
Heater
Milk pump
Sponge valve
Lev1 = Below the lower level
Lev2 = Reached the upper level
T1 = Target temperature
Heat at/after
Timeout at
Generates flushing
Number adjustable in C31
Warm-up time
C10
Temperature reached
C11 timed out
Circulation time
C12
Within this time, the system is automatically
filled with water and flushing is generated
Generates flushing
Number adjustable in C32
Cleaning stage 1 (Pre-rinse) Range Default
P10 intake of cold water up to level 2 Timeout C20 10 min.
Skips P11, as level 2 has already been achieved.
P11 intake of warm water up to level 2 Timeout C20 10 min.
In C30 “cold water only” can be adjusted to 2.
P12 extraction up to level 1 Timeout C21 10 min.
If the water level falls below level 1, a step back to P11 takes
place to get another water intake. This process is repeated
until the set number of water intakes C31 is achieved.
Then the control continues to programme step P13.
P13 Extraction time C3 15 sec.
P14 Draining C4 180 sec.
P15 Final pumping C7 30 sec.
Cleaning stage 2 (Main-rinse)
P20 Intake of warm water up to level 2 Timeout C20 10 min.
P21 Overfilling C8 0 sec.
Water continues to run after achieving level E2
for time C8 to have more water available for the
first rinse.
P22 Dosing of detergent C1 120 sec.
P23 Heating up to temperature T1 Timeout C22 10 min.
Skips P24, as level 2 is already achieved.
P24 Intake of warm water up to level 2 after delay C13 Timeout C20 10 min.
If level 2 is achieved by the water flowing back from
the circulation, the control continues to P25.
P25 Extraction up to level 1 Timeout C21 10 min.
If the water level falls below level 1, further water pulses are
sent through the milking system until all criteria of the main
rinse are fulfilled. Now the control continues to program
step P26 (see also page 19)
P26 Extraction time C3 15 sec.
P27 Draining C4 180 sec.
P28 Final pumping C7 30 sec.
Cleaning stage 3 (After-rinse)
P30 Intake of cold water up to level 2 Timeout C20 10 min.
Skips P31, as level 2 is achieved.
P31 Intake of cold water up to level 2 Timeout C20 10 min.
P32 Extraction up to level 1 Timeout C21 10 min.
If the water level falls below level 1, a step back to P31
takes place to get another water intake. This process is
repeated until the set number of water intakes C32 is
achieved. Then the control continues to programme
step P33.
P33 Extraction time C3 15 sec.
P34 Draining C4 180 sec.
P35 Sponge valve C5 0 sec.
P36 Break/draining C6 120 sec.
P37 Final pumping C7 30 sec.
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Page 19
Description of flow chart
+Heating (relay K5)
Serves to control the heating depending on thermostat B12.
+ Safety switch when cleaning
(Parameter C40)
If safety switch [C40] is parameterised with “1” and selector
switch 2 is on “cleaning (right)”:
If the contact of the safety switch is not closed, the cleaning is
not started. The green lamp flashes quickly (red lamp is off) and
F4 is displayed.
If the error is eliminated (green lamp flashes permanently again)
the cleaning process can be restarted by pressing the start
button.
If an error of the safety switch is detected during the cleaning
process, the process stops.
Description of flow chart
Page 18
+Vacuum pump (relay K4)
- Selector switch 2 is on "milking”:
The vacuum pump works permanently.
(If C41 is activated, the vacuum pump runs in
dependence on the switch position)
- Selector switch 2 is on “rinse”:
The vacuum pump operates according to the flow
chart.
+Milk pump (relay K3)
The milk pump operates according to the flow chart.
+Warm water valve Y12 (relay K2)
+Cold water valve Y11 (relay K1)
The water valves switch according to the flow chart.
+Dosing pump alkalini M11
+Dosing pump acidic M12
(relay K9)
- Selector switch 3 is on “red (left)”:
Acidic detergent is dosed.
- Selector switch 3 is on “blue (right)”:
Alkaline detergent is dosed.
+Circulation valve 13 (relay K6)
The valve controls whether the water returning
from the system is drained or circulates in the
system.
+Suction valve Y14 (relay K7)
The valve controls that the water of the storage
tank of the RM-20 can be sucked into the milking
system.
+Ventilation valve Y15 (relay K8)
In case of a closed suction valve the valve allows
that the residual water in the milking system can
circulate into the RM-20.
+ Thermostat B12 (Input Sen1)
if existing thermostat is functional:
(Parameter C80 - Default 0)
The switching contact of the mechanical thermostat
is “queried” and the heating is controlled accord-
ingly.
If existing thermostat is defective
(Parameter C80 - Default 1)
A sensor KTY 81-210 must be connected at input
Sen1 (optional). If this is the case, the desired
target temperatures are to be set via parameters
C83 and C84.
from the
milking system
Stop function at the end of the pre-rinse:
See picture on the left
Between pre-rinse and main-rinse a STOP can be
programmed with C42. To start this STOP three
different options are available:.
1. Cleaning can be restarted at a certain time by a
timer. For this purpose, the timer sends a
signal to the corresponding digital input at the
time programmed.
2. The cleaning can be restarted by pressing the
start button.
3. The cleaning can be started acc. to a program-
med time (3…999 minutes).
cold water
hot water
to the
milking system
Drain
Heater
E1
E2
alkaline
acid
Y13
Y14
Y15
B12
Main rinse
In the main rinse, rinse pushes are constantly generated. It com-
promises three phases:
1. Heating time [C10]: is for the heating of the rinse water and the
filling of the milking system. The water heated in P23 is pulled
into the system. P24 and P25 are repeating constantly depend-
ing on the level and thus create the rinse-pushes. The control
fills the system automatically with water. If C10 is finished,
follows phase 2
2. Temperature achieved [C11]: Wait until the return flow tempera-
ture of the water is achieved. In this section the temperature is
checked at the end of program step P24. If the temperature is
achieved, follows phase 3, however, after the thermostop-
limitation C11 at the latest.
3. Circulation time [C12]: For the time C12 rinse-pushes are con-
stantly created. The hot water with the detergent circulates in
the system. .
2
1 3
ATTENTION:
In case of
thermostat 1B12
use N/C contact
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Page 19
Description of flow chart
+Heating (relay K5)
Serves to control the heating depending on thermostat B12.
+ Safety switch when cleaning
(Parameter C40)
If safety switch [C40] is parameterised with “1” and selector
switch 2 is on “cleaning (right)”:
If the contact of the safety switch is not closed, the cleaning is
not started. The green lamp flashes quickly (red lamp is off) and
F4 is displayed.
If the error is eliminated (green lamp flashes permanently again)
the cleaning process can be restarted by pressing the start
button.
If an error of the safety switch is detected during the cleaning
process, the process stops.
Description of flow chart
Page 18
+Vacuum pump (relay K4)
- Selector switch 2 is on "milking”:
The vacuum pump works permanently.
(If C41 is activated, the vacuum pump runs in
dependence on the switch position)
- Selector switch 2 is on “rinse”:
The vacuum pump operates according to the flow
chart.
+Milk pump (relay K3)
The milk pump operates according to the flow chart.
+Warm water valve Y12 (relay K2)
+Cold water valve Y11 (relay K1)
The water valves switch according to the flow chart.
+Dosing pump alkalini M11
+Dosing pump acidic M12
(relay K9)
- Selector switch 3 is on “red (left)”:
Acidic detergent is dosed.
- Selector switch 3 is on “blue (right)”:
Alkaline detergent is dosed.
+Circulation valve 13 (relay K6)
The valve controls whether the water returning
from the system is drained or circulates in the
system.
+Suction valve Y14 (relay K7)
The valve controls that the water of the storage
tank of the RM-20 can be sucked into the milking
system.
+Ventilation valve Y15 (relay K8)
In case of a closed suction valve the valve allows
that the residual water in the milking system can
circulate into the RM-20.
+ Thermostat B12 (Input Sen1)
if existing thermostat is functional:
(Parameter C80 - Default 0)
The switching contact of the mechanical thermostat
is “queried” and the heating is controlled accord-
ingly.
If existing thermostat is defective
(Parameter C80 - Default 1)
A sensor KTY 81-210 must be connected at input
Sen1 (optional). If this is the case, the desired
target temperatures are to be set via parameters
C83 and C84.
from the
milking system
Stop function at the end of the pre-rinse:
See picture on the left
Between pre-rinse and main-rinse a STOP can be
programmed with C42. To start this STOP three
different options are available:.
1. Cleaning can be restarted at a certain time by a
timer. For this purpose, the timer sends a
signal to the corresponding digital input at the
time programmed.
2. The cleaning can be restarted by pressing the
start button.
3. The cleaning can be started acc. to a program-
med time (3…999 minutes).
cold water
hot water
to the
milking system
Drain
Heater
E1
E2
alkaline
acid
Y13
Y14
Y15
B12
Main rinse
In the main rinse, rinse pushes are constantly generated. It com-
promises three phases:
1. Heating time [C10]: is for the heating of the rinse water and the
filling of the milking system. The water heated in P23 is pulled
into the system. P24 and P25 are repeating constantly depend-
ing on the level and thus create the rinse-pushes. The control
fills the system automatically with water. If C10 is finished,
follows phase 2
2. Temperature achieved [C11]: Wait until the return flow tempera-
ture of the water is achieved. In this section the temperature is
checked at the end of program step P24. If the temperature is
achieved, follows phase 3, however, after the thermostop-
limitation C11 at the latest.
3. Circulation time [C12]: For the time C12 rinse-pushes are con-
stantly created. The hot water with the detergent circulates in
the system. .
2
1 3
ATTENTION:
In case of
thermostat 1B12
use N/C contact
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Page 21
Operation of the working level
Mode „cleaning“ - selector switch 2 on position “tank“
The green lamp flashes and signalises “ready to start”. All outputs are
still switched off.
!Press start button 1 “briefly”: The rinse-program starts and
performs the complete program.
!Hold start button 1 until the green lamp flashes: On the last rinse-
cycle (after-rinse) is made.
A running rinse-program is signalised by the flashing of the green
lamp.
The flashing rhythm indicates in which rinse-cycle the control is.
Rinse-cycle 1 (pre-rinse)
Rinse-cycle 2 (main rinse)
Rinse-cycle 3 (after rinse)
During the “main-rinse” the red lamp flashes during the heating phase.
If the cleaning is completely finished without an error it is indicated by a
slow flashing of the green lamp.
Mode „OFF“ (selection switch 2 on position 0)
All relays are switched off. Both lamps are off.
Mode „Milking“ - selection switch 2 on position “cow”
The vacuum pump is switched on via the control.
Both lamps are off.
"If in parameter C41 the milking level switch activated, the
vacuum pump can be switched on or off.
"(Only if in parameter C40 the safety switch is activated):
The safety switch indicates that the hose is incorrectly
inserted so that the vacuum pump is switched off and “F5”
is displayed.
Working level description
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The RM-20 is operated on different levels:
Operating level:
... for normal daily operation .
!OFF mode
!MILK mode
!CLEAN mode
The various modes are selected using the existing selector switch on
the TURBOSTAR.
The subordinate parameter pages can only be accessed after a
code has been entered. This is to avoid an accidental adjustment
of the parameters.
Plant parameters
Basic milking system parameters are set here.
Service parameters
Parameters for commissioning the system.
Error memory
The last 10 error codes are saved here. These can be called up for
service purposes.
Working level
for normal daily operation
Code 471
Plant parameters
Code FFF
Error memory
Code 567
Service parameters
For control:
During cleaning the dis-
play shows the current
cleaning step.
If the display is dark, just
press a button
Error messages of the indicator lamps:
Cleaning completed,
Green flashes slowly – red flashes constantly
Error: P24/25 thermostop limitation exceeded [C11] or
P22 heat up the timeout [C20].
The last error is indicated - see error list.
Cleaning interrupted,
green flashes quickly, red is off.
Error: Cleaning interrupted – has to be repeated!
Mains failure, safety switch has been triggered or time out
during water intake (C20 or C21 was exceeded).
The last error is indicated – see error list.
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RM-20 106180-E 02/2022 - V0.8RM-20 106180-E 02/2022 - V0.8
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