Foster FD2-10 User manual

Foster Prep Station
with
FD2-10 Controller
Service Manual
Issued August 2010
ISO 14001
ISO 9001

1
Contents
Manual Information & Health & Safety Notes
1
Environmental Management Policy
2
Disposal Requirements
2
Cabinet & Counter Description
3
Controller Relevance Table & Operation
3-4
User Functions
4-5
Defrost Operation & Fuzzy Logic
5
Wiring Diagram for Defrost & Technical Data
6
Configuration of Parameters
6
Prep Station Controller Default
7-10
Cabinet Arrangement Diagrams
11-12
Technical Data
13
Individual Unit Controller Parameter Values
14-16
Wiring Diagrams & Probe details
17-18
Troubleshooting & Notes
19-21
Service Manual Information
The products and all information in this manual are subject to change without prior notice.
We assume by the information given that the person(s) working on these refrigeration units are fully trained and
skilled in all aspects of their workings. Also that they will use the appropriate safety equipment and take or meet
precautions where required.
The service manual does not cover information on every variation of this unit; neither does it cover the
installation or every possible operating or maintenance instruction for the units.
Health & Safety Warnings and Information
Make sure the power supply is turned off before making any electrical repairs.
To minimise shock and fire hazards, please do not plug or unplug the unit with wet
hands.
During maintenance and cleaning, please unplug the unit where required.
Care must be taken when handling or working on the unit as sharp edges may cause
personal injury, we recommend the wearing of suitable PPE.
Ensure the correct moving and lifting procedures are used when relocating a unit.
Do NOT use abrasive cleaning products, only those that are recommended. Never
scour any parts of the refrigerator. Scouring pads or chemicals may cause damage by
scratching or dulling polished surface finishes.
Failure to keep the condenser clean may cause premature failure of the
motor/compressor which will NOT be covered under warranty policy.
Do NOT touch the cold surfaces in the freezer compartment. Particularly when hands
are damp or wet, skin may adhere to these extremely cold surfaces and cause frostbite.
Please ensure the appropriate use of safety aids or Personnel Protective Equipment
(PPE) are used for you own safety.

2
Environmental Management Policy for Service Manuals and Duets.
Product Support and Installation Contractors
Foster Refrigerator recognises that its activities, products and services can have an adverse impact upon the
environment.
The organisation is committed to implementing systems and controls to manage, reduce and eliminate its
adverse environmental impacts wherever possible, and has formulated an Environmental Policy outlining our
core aims. A copy of the Environmental Policy is available to all contractors and suppliers upon request.
The organisation is committed to working with suppliers and contractors where their activities have the potential
to impact upon the environment. To achieve the aims stated in the Environmental Policy we require that all
suppliers and contractors operate in compliance with the law and are committed to best practice in
environmental management.
Product Support and Installation contractors are required to:
1. Ensure that wherever possible waste is removed from the client‟s site, where arrangements are in place all
waste should be returned to Foster Refrigerator‟s premises. In certain circumstances waste may be
disposed of on the client‟s site; if permission is given, if the client has arrangements in place for the type of
waste.
2. If arranging for the disposal of your waste, handle, store and dispose of it in such a way as to prevent its
escape into the environment, harm to human health, and to ensure the compliance with the environmental
law. Guidance is available from the Environment Agency on how to comply with the waste management
„duty of care‟.
3. The following waste must be stored of separately from other wastes, as they are hazardous to the
environment: refrigerants, polyurethane foam, and oils.
4. When arranging for disposal of waste, ensure a waste transfer note or consignment note is completed as
appropriate. Ensure that all waste is correctly described on the waste note and include the appropriate six-
digit code from the European Waste Catalogue. Your waste contractor or Foster can provide further
information if necessary.
5. Ensure that all waste is removed by a registered waste carrier, a carrier in possession of a waste
management licence, or a carrier holding an appropriate exemption. Ensure the person receiving the waste
at its ultimate destination is in receipt of a waste management licence or valid exemption.
6. Handle and store refrigerants in such a way as to prevent their emission to atmosphere, and ensure they
are disposed of safely and in accordance with environmental law.
7. Make arrangements to ensure all staff who handle refrigerants do so at a level of competence consistent
with the City Guilds 2078 Handling Refrigerants qualification or equivalent qualification.
8. Ensure all liquid substances are securely stored to prevent leaks and spill, and are not disposed of to
storm drains, foul drain, or surface water to soil.
Disposal Requirements
If not disposed of properly all refrigerators have components that can be harmful to the environment. All old
refrigerators must be disposed of by appropriately registered and licensed waste contractors, and in accordance
with national laws and regulations.

3
Foster Prep Station Descriptions
The range consists of 2 to 5 door models with a storage capacity ranging from 270 to 720 litres.
The cabinets are manufactured as a one piece foam shell with easy clean stainless steel exterior
All conform to current legislation and exceed the Montreal protocol using zero ODP refrigerants and insulation.
The temperature is controlled by a LAE microprocessor control with digital temperature display.
Easy accessible condensing unit fitted at the rear for ease of servicing.
The standard refrigeration system is integral with an air-cooled condensing unit with the refrigerant distribution
into the evaporator controlled by capillary.
The cooled air is circulated through the evaporator, via the fan into the storage area.
Coated coils prevent corrosion and prolong refrigeration life.
Easy to read temperature display with wipe clean finish.
Wide magnetic gasket giving a positive door seal.
Temperature and Capacities
Model
FPS 2HR
FPS 3HR
FPS 4HR
FPS 5HR
Counter Base Storage Temperature
+1 to +4°C
+1 to +4°C
+1 to +4°C
+1 to +4°C
Pan Storage Temperature (with Lids Fitted)
+3 to +5°C
+3 to +5°C
+3 to +5°C
+3 to +5°C
Nett Capacity (litres)
270
420
570
720
Pan Clear Opening
1058 x 305
1640 x 305
2222 x 305
2804 x 305
Max Number of 1/3 Pans per Opening
6
9
12
16
Door Opening (w x h) Per Door
450 x 604
450 x 604
450 x 604
450 x 604
Door Opening Depth
1345
1345
1345
1345
Shelf Size
417 x 410
417 x 410
417 x 410
417 x 410
Number of Shelves Supplied Per Unit
4
6
8
10
Number OF Castors Supplied
5
5
5
6
Controller Relavance Table
Model
1st Serial Number
Issued
Manufacturer
Date from
Counter
E5269275
05.07.2010
Controller Operation
FD2-10 Controller (00-556241)
Probe Evap 2.5M SN4K15H2 (00-556251)
Probe Air 2.5M SN4K15H1 (00-556248)
LCD 5S Display (00-555992)
LCD5 Connecting Ribbon 1.5m (00-555741)
LCD5 Connecting Ribbon 3m (00-555814)
(Normally only used on FPS4 & 5’S Models)
LCD 5S Display (00-555992)
Indicators and Buttons
Symbol
Reason
Button
Use
Alarm
Info / Set Point Button
Thermostat Output
Manual Defrost / Decrease Button
Fan Output
Increase Button / Manual Activation
Defrost Output
Stand-by Button
Activation of 2nd parameter set

4
Display
During normal operation the display shows either the temperature measured or one of the following indicators:
Information Menu
The information available in the menu is shown below:
* Displayed only if enabled (see configuration parameters)
** Displayed only if ACC > 0
User Functions
Start Sequence
For normal operation
Press and hold the button for 3 seconds then release.
If pressed and held for 5 seconds then released this will start the „Test Sequence‟.
The test function is a defined sequence of events that will follow a prescribed pattern (dependent upon
parameter values). In turn it will operate all electrical elements of the system, simulating a short operating
pattern. This was designed to provide a quick and simple evaluation tool to use either during manufacturing or
when servicing.
To cancel the Test Sequence
Press and release the button during the test sequence.
If not pressed the test will continue and when complete the controller will wait for 1 min, then resume normal
operation. (The controller will count to 530 then show „end‟. It will then show the current unit temperature)
Access to the menu and information displayed
Press and immediately release button
With button or select the data to be displayed
Press button to display the value
To exit from the menu, press button or wait for 10 seconds.
Set point: Display and modification
Press button for at least half a second to display the set point.
By keeping button pressed, use button or to set the desired value (adjustment is within the
minimum SPL and the maximum SPH limit)
When button is released, the new value is stored.
Symbol
Reason
Symbol
Reason
Defrost in progress
Condenser high pressure alarm
Controller in stand-by
Room high temperature alarm
Condenser clean warning
Room low temperature alarm
Door open alarm
Probe T1 failure
Condenser high temperature alarm
Probe T2 failure
Symbol
Reason
Symbol
Reason
Instant probe 1 temperature
Minimum probe 1 temperature recorded
Instant probe 2 temperature *
Compressor working weeks **
Instant probe 3 temperature *
Keypad state lock
Maximum probe 1 temperature recorded

5
Reset of THI, TLO, CND recordings
With button or select the data to be reset
Display the value with button
While keeping button pressed, use button .
Standby
When pressing the button for 3 seconds, will allow the controller to be put on a standby or output control to
be resumed (with SB = YES only). When on Standby will be displayed.
Selection of second parameter group
It is possible to select control parameters between two different pre-programmed groups, in order for the
fundamental control parameters to be adapted to changing needs. Changeover from Group I to Group II (and
visa versa) may take place Manually by pressing for 2 seconds (with IISM = MAN), or Automatically when
heavy duty conditions are detected (with IISM = HDD), or when IISM =D12 and the Auxiliary Input D12 is
activated (the activation of D12 selects Group II). If IISM = NON, switchover to Group II is inhibited. The
activation of Group II is signalled by the lighting up of relevant LED on the controller display.
Defrost
Automatic Defrost.
Defrost starts automatically as soon as the time set with parameter DFT has elapsed.
Time Defrost With DFM = TIM defrost takes place at regular intervals when the timer reaches the value
DFT. For example, with DFM = TIM and DFT = 06, a defrost will take place every 6 hours.
Defrost time count backup At the power–up, if DFB = YES, the defrost timer resumes the time count
from where it was left off before the power interruption. Visa versa with DFB=NO, the time count re-
starts from 0. In stand-by the accumulated time count is frozen.
Defrost type
Once defrost has started, compressor and defrost outputs are controlled according to parameter DTY. If FID
=YES, the evaporator fans are active during defrost.
Resuming Thermostatic Cycle
When defrost is over, if DRN is greater then 0, all outputs will remain off the DRN minutes, in order for the ice to
melt completely and the resulting water to drain.
Manual Defrost
To initiate a manual defrost press and hold the defrost button for 2 seconds.
Fuzzy Logic.
This setting is not available with any of these units.

6
Parameter Setting Wiring Diagram for Synchronising Defrost Start and Termination
Technical Data
Power Supply
FD2-10 230Vac±10%, 50/60Hz, 3W
Relay Output
Compressor 16(8) A 240Vac
Defrost 16(4) A 240Vac
Evap. Fan 16(4) A 240Vac
Auxiliary Loads 1 8(2) A 240Vac
Input
NTC 10KΩ@25°C
Measurement Range
-50…120°C, -55…240°F
-50 / -9.9…19.9 / 80°C (NTC 10K Only)
Measurement Accuracy
<0.5°C within the measurement range
CE (Reference norms)
EN60730-1; EN60730-2-9
EN55022 (Class B)
EN50082-1
Configuration Parameters
To get access to the parameter configuration menu, press + for 5 seconds
With button or select the parameter to be modified.
Press button and hold briefly to display the value. On releasing the button the controller will then
show the next parameter.
By keeping button pressed, use button or to set the desired value. On releasing the button
the controller will store the amended value and then show the next parameter.
To exit from the setup, press button or wait for 30 seconds.

7
FPS Controller Default Parameter Values
Parameter
Range
Description
Default FD2-10
SCL
Readout Scale:
2°C
1°C
Range -50/-9.9…. 19.9/80°C (With INP = SN4 Only)
2°C
Range -50 …. 120°C
°F
Range -55 …. 240°F
SPL
-50 … SPH
Minimum Limit for SP setting
1
SPH
SPL …120°
Maximum limit for SP setting
3
SP
SPL … SPH
Temperature set point to be achieved
2
C-H
Temperature Control mode:
REF
REF
Refrigeration
HEA
Heating
HYS
1 … 10°
Off/On Thermostat differential
3
CRT
0 … 30min
Compressor Rest Time
2
CT1
0 … 30min
Thermostat run time with faulty T1 probe.
(CT1 = 0 output with faulty T1 will always be off)
6
CT2
0 … 30min
Thermostat off time with faulty T1 probe.
(CT2=0 & CT1 = >0 output with faulty T1 will always be on)
4
CSD
0 … 30min
Compressor stop delay after door has been opened
(Only if DS = YES)
1
DFM
Defrost Start Mode:
TIM
Non
Defrost function is disabled
TIM
Regular time defrost
FRO
Defrost time elapses only in condition of frost accumulation
DFT
0…99 Hours
Time interval between defrosts
6
DFB
Defrost timer clock
YES
YES
Following mains interruption, timer resumes count
NO
Following mains interruption, timer restarts from zero
DLI
-50.. 120°
Defrost end temperature
(Only if T2 = EPO)
N/A
DTO
1 … 120min
Maximum defrost duration
20
DTY
Defrost Type:
OFF
OFF
Timed off cycle defrost (compressor and heater off)
ELE
Electric heater defrost (compressor off, heater on)
GAS
Hot gas defrost (compressor and heater on)
DPD
0 … 240 sec
Evaporator pump down. Timed pause at start of defrost
0
DRN
0 … 30min
Drain down period
2
DDM
Defrost display mode:
DEF
RT
Real (actual) air temperature
LT
Last temperature display before start of defrost
SP
The current set point value.
DEF
“DEF”

8
DDY
0… 60 min
Defrost display delay period
Time DDM is shown following defrost termination
10
FID
Fans in defrost:
YES
YES
Fans run during defrost
NO
Fans do not run during defrost
FDD
-50 … 120°
Evaporator fan restart temperature following defrost
(Only if T2 = EPO)
5
FTO
0…120 min
Maximum evaporator fan stop period following defrost
3
FDS
0…120 sec
Minimum evaporator fan stops (following door opening etc)
20
FCM
Evaporator fan mode during thermostatic control:
TIM
NON
Fan(s) run continuously
TMP
Temperature based control. When compressor is on, fans are on.
When compressor is off, fans run as long as temperature difference
Te-Ta > FDT. Fans on again with FDH
Tim
Time based control. When compressor is on, fans are on. When
compressor is off, fans in accordance to parameters FT1, FT2 and
FT3.
FDT
-120 … 0°
Te-Ta difference for fans to turn off after compressor stopped.
(Only if T2 = EPO and FCM = TMP)
-1
FDH
1 … 120°
Temperature differential for evaporator fan restart.
(Only if T2 = EPO and FCM = TMP)
3
FT1
0 … 180 Sec
Fan stop delay after compressor stop.
15
FT2
0 … 30min
Timed fan stop following FT1
(With FT2 = 0 the fans remain on all the time).
3
FT3
0 .. 30min
Timed fan run following FT2
(With FT3 = 0 and FT2 >0 the fans remain off all the time.
2
ATM
Alarm threshold configuration:
REL
NON
All temperature alarms are inhibited
ABS
The value set in ALA and AHA represent actual alarm set points
REL
The values set in ALR and AHR are alarm differentials which relate to
SP and SP + HYS
ALA
-50 … 120°
Low temperature alarm threshold
AHA
-50 … 120°
High temperature alarm threshold
ALR
-12 … 0°
Low temperature alarm differential
(With ALR = 0 the low temperature alarm is excluded)
-5
AHR
0 … 12°
High temperature alarm differential
(With AHR = 0 the low temperature alarm is excluded)
5
ATI
Alarm probe:
T1
T1
Air temperature probe used for alarm detection
T2
Evaporator temperature probe used for alarm detection
ATD
0… 120min
Delay before alarm temperature warning
90
ADO
0… 30min
Delay before door open alarm warning
8

9
AHM
Operation in case of high condenser alarm (T2 = CND)
NON
NON
High condenser temperature alarm inhibited
ALR
Condenser warning –„HC‟ displayed, alarm sounds
STP
As „ALR‟ with compressor stopped and defrosts suspended
AHT
-50 … 120°
Condenser alarm temperature (T2 = CND)
65
ACC
0…52 Weeks
Condenser cleaning period.
(With ACC = 0 condenser cleaning is disabled)
0
IISM
Switchover method to second parameter set:
HDD
NON
Second parameter set is excluded
MAN
Second parameter set is activated/ deactivated by button
HDD
Second parameter activated by „heavy‟ usage
D12
Second parameter set activated by D12 input (D12 = IISM)
IISL
-50 . IISH
Minimum limit for IISP setting
1
IISH
IISL .. 120°
Maximum limit for IISP setting
1
IISP
IISP…IISH
Temperature set point to be achieved in „Mode 2‟
1
IIHY
1 … 10°
Off/on thermostat differential in „Mode 2‟
3
IIFC
Evaporator fan mode during ‘Mode 2’ thermostatic control:
NON
NON
Fans(s) run continuously
TMP
Temperature based control. When compressor is on, fans are on.
When compressor is off, fans run as long as temperature difference
Te-Ta>FDT. Fans on again with FDH
TIM
Time based control. When compressor is on, fans are on. When
compressor is off, fans in accordance to parameters FT1, FT2 and
FT3.
HDS
1 … 5
Controller sensitivity for switch over between „Modes‟ and 2.
(1 = minimum, 5 = maximum)
3
IIDF
0 … 99hours
Time interval between defrosts in „Mode 2‟.
6
SB
Standby button operation:
YES
YES
Standby button enabled
No
Standby button disabled
DS
Door switch operation (switch made when door closed):
YES
YES
Door switch enabled
NO
Door switch disabled
DI2
Configuration digital input operation:
NON
NON
Digital input 2 not activated
HPS
High pressure alarm when contact opens
IISM
„Mode 2‟ parameters active when contact closes
RDS
Defrost initiated when contact closes
DS2
Second door switch function (operated „in series‟ with DS)
LSM
Light control mode:
NON
NON
Digital input 2 not activated
MAN
Light output operation is activated/deactivated by button
(With OA1 = LGT)
DOR
Light output is switched on when door is opened
(With OA1 = LGT and DS = YES)
NDR
Light output is switched off when door is opened.
(With OA1 = LGT and DS = YES)

10
OA1
Auxiliary relay operation:
NON
NON
Output disabled (always off)
0-1
Contacts open/close with standby/on mode
LGT
Output enabled for light control
AL0
Contacts open when an alarm condition occurs
AL1
Contacts close when an alarm condition occurs
(Relay contacts open when in standby mode)
INP
Temperature sensor(s) type:
SN4
SN4
10k NTC type thermistor (red writing)
ST1
1k PTC type thermistor (Black Writing)
OS1
-12.5...12.5°C
Air temperature probe (T1) offset.
0
T2
T2 Probe function:
NON
NON
T2 Probe disabled
EPO
Evaporator temperature monitoring
CND
Condenser temperature monitoring
OS2
-12.5…12.5°C
T2 probe temperature offset
0
TLD
1 … 30min
Delay for min (TLO) and max. (THI) temperature logging
10
SIM
0 … 100
Display Slowdown
5
ADR
1… 255
FD2-10 address for PC communication
1

11
Cabinet General Arrangement
Evaporator Assembly

12
FPS2HR & FPS3HR Condensing Unit Arrangement.
FPS4HR & FPS5HR Condensing Unit Arrangement.
AIR FLOW
AIR FLOW
AIR FLOW

13
Technical Data Foster Prep Stations
Model
Storage Temp
Gas
Gas
Charge
Compressor
Capillary
Defrost
Type
Voltage
Power
Consumption
Thermal
Heat
Rejection
Net
Weight
Kgs
Fuse
Rating
Watts
Amps
FPS2HR
+3°C to +5°C
R134A
375 grms
SC12GX
3.0m x 0.042
Timed Off
Cycle
230/50/1
690
4.4
1050
164
13
Amp
FPS3HR
+3°C to +5°C
R134A
460 grms
SC15GX
3.0m x 0.054
Timed Off
Cycle
230/50/1
875
5.6
1620
207
13
Amp
FPS4HR
+3°C to +5°C
R134A
575 grms
CAJ4492Y
3.0m x 0.064
Timed Off
Cycle
230/50/1
1140
7.4
2240
245
13
Amp
FPS5HR
+3°C to +5°C
R134A
800 grms
CAJ4492Y
3.0m x 0.064
Timed Off
Cycle
230/50/1
1170
7.6
2280
265
13
Amp

14
FOSTER FD2-10
FPS2HR
FPS3HR
FPS4HR
FPS5HR
Reg
Par
Min
Mid
Max
Description
C
C
C
C
253
SCL
1oC
oF
2oC
Readout scale.
2°C
2°C
2°C
2°C
200
SPL
-50o
…..
SPH
Minimum limit for SP setting.
1
1
1
1
202
SPH
SPL
…..
120o
Maximum limit for SP setting.
3
3
3
3
204
SP
SPL
…..
SPH
Temperature setpoint to be achieved.
1
1
1
1
268.1
C-H
REF
…..
HEA
Temperature control mode.
REF
REF
REF
REF
214
HYS
1o
…..
10o
Off / On thermostat differential.
4
4
4
4
216
CRT
0 min
…..
30 min
Compressor rest time.
2
2
2
2
217
CT1
0 min
…..
30 min
Thermostat run time with faulty T1 probe.
6
6
6
6
218
CT2
0 min
…..
30 min
Thermostat off time with faulty T1 probe.
4
4
4
4
219
CSD
0 min
…..
30 min
Compressor stop delay after door has been
opened. (Only if DS = YES).
1
1
1
1
220
DFM
NON
FRO
TIM
Defrost start mode.
TIM
TIM
TIM
TIM
221
DFT
0
hours
…..
99
hours
Time interval between defrosts.
6
6
6
6
268.4
DFB
NO
…..
YES
Defrost timer clock.
YES
YES
YES
YES
206
DLI
-50o
…..
120o
Defrost end temperature (Only if T2 = EPO).
20
20
20
20
223
DTO
1 min
…..
120 min
Maximum defrost duration.
20
20
20
20
224
DTY
OFF
ELE
GAS
Defrost type.
OFF
OFF
OFF
OFF
225
DPD
0 sec
…..
240 sec
Evaporator pump down. Timed pause at start
of defrost.
0
0
0
0
226
DRN
0 min
…..
30 min
Drain down period.
2
2
2
2
227
DDM
RT
SP, DEF
LT
Defrost display mode.
DEF
DEF
DEF
DEF
228
DDY
0 min
…..
60 min
Defrost display delay period.
10
10
10
10
267.5
FID
NO
…..
YES
Fans in defrost.
YES
YES
YES
YES
207
FDD
-50o
…..
120o
Evaporator fan restart temperature following
defrost. (Only if T2 = EPO).
5
5
5
5
229
FTO
0 min
…..
120 min
Maximum evaporator fan stop period
following defrost.
3
3
3
3

15
237
FDS
0 sec
…..
120 sec
Minimum evaporator fan stop (following door
opening etc.).
20
20
20
20
230
FCM
NON
TIM
TMP
Evaporator fan mode during thermostatic
control.
TIM
TIM
TIM
TIM
232
FDT
-120o
…..
0o
Te-Ta difference for fans to turn off after
compressor stopped. (Only if T2 = EPO and
FCM = TMP).
-1
-1
-1
-1
233
FDH
1o
…..
120o
Temperature differential for evaporator fan
restart. (Only if T2 = EPO and FCM = TMP).
3
3
3
3
234
FT1
0 sec
…..
180 sec
Fan stop delay after compressor stop.
15
15
15
15
235
FT2
0 min
…..
30 min
Timed fan stop following FT1. (With FT2 = 0
the fans remain on all the time).
0
0
0
0
236
FT3
0 min
…..
30 min
Timed fan run following FT2. (With FT3 = 0 &
FT2 > 0 the fans remain off all the time).
2
2
2
2
238
ATM
NON
REL
ABS
Alarm threshold configuration.
REL
REL
REL
REL
208
ALA
-50o
…..
120o
Low temperature alarm threshold.
-2
-2
-2
-2
209
AHA
-50o
…..
120o
High temperature alarm threshold.
8
8
8
8
239
ALR
-12o
…..
0o
Low temperature alarm differential. (With
ALR = 0 the low temperature alarm is
excluded).
-5
-5
-5
-5
240
AHR
0o
…..
12o
High temperature alarm differential. (With
AHR = 0 the low temperature alarm is
excluded).
5
5
5
5
241
ATI
T1
…..
T2
Alarm probe.
T1
T1
T1
T1
242
ATD
0 min
…..
120 min
Delay before alarm temperature warning.
90
90
90
90
243
ADO
0 min
…..
30 min
Delay before door open alarm warning.
8
8
8
8
244
AHM
NON
STP
ALR
Operation in case of high condenser alarm
(T2 = CND).
NON
NON
NON
NON
210
AHT
-50o
…..
120o
Condenser alarm temperature (T2 = CND).
65
65
65
65
245
ACC
0
weeks
…..
52
weeks
Condenser cleaning period. (With ACC = 0
condenser cleaning is disabled).
0
0
0
0
247
IISM
NON
HDD, DI2
MAN
Switchover method to second parameter set.
HDD
HDD
HDD
HDD
201
IISL
-50o
…..
IISH
Minimum limit for IISP setting.
1
1
1
1
203
IISH
IISL
…..
120o
Maximum limit for IISP setting.
1
1
1
1
205
IISP
IISL
…..
IISH
Temperature setpoint to be achieved in
'Mode 2'.
1
1
1
1
215
IIHY
1o
…..
10o
Off / On thermostat differential in 'Mode 2'.
4
4
4
4
231
IIFC
NON
TIM
TMP
Evaporator fan mode during 'Mode 2'
thermostatic control.
NON
NON
NON
NON

16
246
HDS
1
…..
5
Controller sensitivity for switch over between
'Modes' 1 and 2. (1 = minimum, 5 =
maximum).
3
3
3
3
222
IIDF
0
hours
…..
99
hours
Time interval between defrosts in 'Mode 2'.
6
6
6
6
268.7
SB
NO
…..
YES
Standby button operation.
YES
YES
YES
YES
268.0
DS
NO
…..
YES
Door switch operation (switch made when
door closed).
NO
NO
NO
NO
251
DI2
NON
IISM, RDS,
DS2
HPS
Configurable digital input operation.
NON
NON
NON
NON
248
LSM
NON
DOR, NDR
MAN
Light control mode.
NON
NON
NON
NON
249
OA1
NON
LGT, AL0,
AL1
0-1
Auxiliary relay operation.
0-1
0-1
0-1
0-1
268.2
INP
ST1
…..
SN4
Temperature sensor(s) type.
SN4
SN4
SN4
SN4
256
OS1
-
12.5oC
…..
12.5oC
Air temperature probe (T1) offset.
0
0
0
0
250
T2
NON
EVP
CND
T2 probe function.
NON
NON
NON
NON
251
OS2
-
12.5oC
…..
12.5oC
T2 probe temperature offset.
0
0
0
0
252
TLD
1 min
…..
30 min
Delay for min. (TLO) and max. (THI)
temperature logging.
10
10
10
10
254
SIM
0
…..
100
Display slowdown.
5
5
5
5
255
ADR
1
…..
255
FD2-10 address for PC communication
1
1
1
1
Parameters ALA and AHA will not be visible when ATM is set at REL.
Parameters ALR and AHR will not be visible if ATM is changed to ABS.

17
Prep Station (Integeral and Remote models) Wiring Diagram

18
Air and Evaporator Probe Details / Diagram
Probe Air 2.5M SN4K15H1 (00-556248)
Probe Evap 2.5M SN4K15H2 (00-556251)

19
Troubleshooting
Problem
Possible Cause
Solution
Compressor will not start
No voltage in socket
Use voltmeter to check
Electrical conductor or wires may be
cut
Use ohmmeter to check for continuity
Defective electrical component:
thermostat, relay, thermal protector etc
Replace defective component
Compressor motor has a winding open
or shorted
Measure ohmic resistance of main and
auxiliary winding using ohmmeter.
Compare with correct values
Compressor stuck
Change compressor
Temperature control contacts are open
Repair or replace the contacts
Incorrect wiring
Check wiring diagram and correct
Fuse blown or circuit breaker tripped.
Replace fuse or reset circuit breaker
Power cord unplugged
Plug in power cord.
Controller set too high
Set controller to lower temperature.
Cabinet in defrost cycle
Wait for defrost cycle to finish
The temperature is too cold
Controller is set at a very cold position
Set to warmer position and check if the
compressor stops according to
controllers operating range.
Controller does not disconnect the
condensing unit
Check the insulation of the thermostat.
If problem persists, change the
thermostat
Control contacts are stuck closed
Change the control. Check amperage
load
Defective or incorrect temperature
control
Determine correct control and replace.
The temperature is not cold enough
Controller is set at a very warm
position
Adjust to colder setting
Condenser is dirty
Clean condenser
The refrigerator has been placed at an
inadequate location
The unit must not be near stoves, walls
that are exposed to the sun, or places
that lack sufficient air flow.
Compressor is inefficient or there is a
high pressure due to the air in the
system
If there is air in the system, purge and
recharge
Iced up evaporator coil
Check temperature control, refrigerant
charge, and defrost mechanism.
Remove all ice manually and start
over.
Restriction in system
Locate exact point of restriction and
correct
The refrigerator has been used
improperly
The shelves must never be covered
with any type of plastic or other
material that will block the circulation of
cold air within the refrigerator.
Too many door openings
Advise user to decrease if possible
Excessive heat load placed in cabinet
Advise user not to put in products that
are too hot.
The refrigerator has been overcharged
with the refrigerant gas
Check to see if condensation or ice
crystals have formed on the suction
line. If so, charge with the correct
amount of gas.