Winterhalter PT-L, Operating Instructions Manual

Page: 39 / 44

External dosing devices
37
18.2 Electrical connection
IMPORTANT maximum current drain at the transfer strip: 0.5 A.

Connect the external dosing device to the 5-pin plug.
Terminals (arranged from top to bottom)
Terminal Voltage is on Condition Restriction Setting
L1 continuous voltage
N
Rinse
(O18)
parallel to solenoid valve (O7)

while the machine is filling

during rinsing
a) c) P709 = 0
Wash
(O20) while the circulating pump is
running
a) c), d), e)
Fill / Water
(O17)
while the machine is filling a), b) P704 = 0
parallel to solenoid valve (O7)

while the machine is filling

during rinsing
a) c) P704 = 1
a) hood / door closed
b) minimum water level in the tank
c) not in the self-cleaning programme
d) not while the machine is filling
e) not in descaling or basic cleaning programme
The parameters P704 and P709 control when a voltage is present at the Fill/Water and Rinse terminals.
Connecting an external detergent dosing device
Example 1:
Hose pump with time-delay
relay and fixed output Example 2:
Hose pump with adjustable
output Example 3:
Hose pump with fixed output
(e. g. ESP 166, ESP 166C,
SP 166Z)
 Connect to “Wash” terminal.

Set time-delay relay on the
dosing device.

Connect to
“Fill/Water” ter-
minal.

Set P704=1.

Set output on the dosing
device.
 Connect to “Fill/Water” termi-
nal.

Set P704=2.

Set both potentiometers to
maximum.

Set dosing amount on the
machine.

If the capacity is not equal to
166 ml/min, set P706 (see
service instructions).
Connecting an external rinse aid dosing device
Example 1:
Hose pump with adjustable
output Example 2:
Hose pump with fixed output
(16 ml/min) (e.g. SP 16K )
 Connect to “Rinse” terminal.

Set P709 = 0.

Set output on the dosing
device.
 Connect to “Rinse” terminal.

Set P709=2.

Set potentiometer to maxi-
mum.

Set dosing amount on the
machine.