english
GB
5
When the controller is switched on a single line
appears on the display for 3 seconds to indicate the
autotest period.
After this period the air temperature measured by
the T1 probe is displayed.
LDU 15 Controller
Switching On
Important Note: If the refrigeration panel has
been laid down at any time it must be left in
the vertical position for at least one hour before
switching ON.
(For water cooled models proceed to step 18).
Plug the lead into a suitable socket and switch ON
the power to the unit.
Switch the unit on using the ON/OFF switch on the
control panel.
Do not load product into the coldroom until it has
achieved the correct working temperature.
Temperature.
High Temperature coldroom +1˚C to +4˚C.
Low Temperature coldroom -18˚C to -21˚C.
STEP 16.
Water Cooled
Condensing System Connection Procedure
STEP 18.
Check temperature set point.
Check set point by pressing the
‘set’
button
To increase set point press
‘set’
+
To decrease set point press
‘set’
+
Factory Temperature Set Point +1˚C.
Exit from set up occurs after 10 seconds if
no button is pressed.
Alarms and Warnings
HI
High Temperature Alarm
LO
Low Temperature Alarm
E1
T1 Probe Failure
DF
Defrosting in Progress
CLN
Clean Condenser
Control Panel
STEP 17.
Temperature
controller
Mains
ON/OFF
switch
Interior
light
switch
2
3
High Temperature Room Control Panel
When the unit is switched on the display shows “- - -”
for a period of five seconds, during which the
controller performs a self-check. The display then
shows the air temperature measured by probe 1.
Low Temperature Room Control Panel
set
"
-
#
"
-
#
"
-
#
"
-
#
aux
lae
aux
❆
3:2
CDC Controller
CDC 122
❆
❆
ALT
ALT
❆
❆
❆
5
6
7
1
4
❆
Check Set Point
Low point of temperature band.
Press and hold button 1 ( )
Increase Set Point
Press and hold button 1 ( ). Press button 3 ( )
until required temperature is displayed.
Decrease Set Point.
Press button. 1 ( ). Press button 4 ( ) until
required temperature is displayed.
Manual Defrost
Press and hold button 2 ( ). Press button 4 ( )
a timed defrost will follow.
Indicators
LED 5 Compressor on ( ).
LED 6 Evaporator Fan on ( ).
LED 7 Defrost on ( )
Alarms and Warnings
PF1
indicates air probe failure.
PF2
indicates evaporator probe failure.
Water cooled condensing kit.
Heat Exchanger complete with fan and cable.
2 x 30 metres flexible hoses.
4 x jubilee clips.
Tools required
Flat bladed screwdriver
Funnel
5 litre container for water
Step ladder
Determine the position of the Heat Exchanger (see
fig 29) before proceeding further with the installa-
tion. Unit can be mounted up to 5 metres vertically away
from the compressor and up to 25 metres horizontally.
Weather proof housing to the remote system means it is
suitable for outdoor location.
It should be positioned in a cool area and out of
direct sunlight with no restriction to the airflow.
Either attach it to a wall by the fixing points, using
screws and wall plugs, or position on a flat roof
firmly securing it in place.
Once positioned connect the flexible water pipes to
the Water Inlet (A) and Water Outlet (B) connection,
securing them to the pipes using the jubilee clips
provided.
Run the flexible pipes to the refrigeration system
panel avoiding any sharp bends that could result in
kinks in the flexible pipes therefore impeding the
water flow.
Water Inlet ‘A’
Water Return ‘B’
Figure 29
Open the cover of the refrigeration system panel as
previously described.
Cut the pipes to the required length allowing suffi-
cient surplus so that the pipes are not stretched.
Slide the jubilee clip over the end of the flexible
pipe. Connect the pipe connected to the top of the
condenser (Water Inlet 'A') to the 15mm copper
pipe (Water outlet 'A') at the left of the left-hand
side of the compartment. Slide the jubilee clip
over the connection and tighten securely to avoid
leakage.
Slide the jubilee clip over the end of the second
flexible pipe. Connect the pipe connected to the
bottom connection (Water return ‘B’) of the
heat exchanger to the 15mm pipe (Water Inlet ‘B’)
attached to the stainless steel tank. Slide the jubilee
clip over the connection and tighten securely to
avoid leakage.
Electrical Connection
Run the remote condenser fan cable to the
condensing unit with the water pipes.
Plug the male cable connector attached to the end
of the fan wire in to the female cable connector
attached to the wire next to the water fill pipe.
Leave any surplus cable on the top of the coldroom
Filling the system with water
Fill the 5-litre container with clean water.
Note: Anti-freeze
Where pipework to heat exchanger may be at risk
of freezing, add anti-freeze at 40% of total liquid
requirement.
Remove the plastic cap from the end of the
‘Water Fill Pipe’.
Insert the funnel in to the end of the Water Fill Pipe.
Slowly and with care, avoiding any spillage, poor 2
litres of the water into the tank.
Plug the mains lead in to the power source and turn
the unit ON.
After a short period the water pump will start to
circulate the water round the system.
Leave the pump to run for a further 2 minutes.
Switch the unit Off before adding the remaining 3
litres of water.
Switch the unit On and leave running for a few
minutes to check that the water is circulating
correctly.
Check the water level in of the tank by placing a
hand against the front, the tank if filled with
sufficient water will be warm half way up, if not it
may be necessary to add more water.
Refit the plastic cap to the water fill pipe.
On completion return to step 16.
Water Fill Pipe
Water Outlet ‘A’
Water Inlet ‘B’
remote
condenser fan
electrical
connection
Figure 30
