Foster FKS 10-4, Техническое руководство

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MICROPROCESSOR CONTROLS
Thermostat Function
SPL Min set point (°C)
Maximum allowable low alarm setting (°C)
SPh
Maximum set point (°C)
Maximum allowable high alarm setting (°C)
hyS Temperature hysteresis (°K)
coF Compressor minimum off time (mins)
con Compressor minimum on time (mins)
cdc Cooler duty cycle. Compressor on duration during a ten minute
cycle e,g. cdc = 04, 4 min on time, 6 min off time (active only
under probe fault conditions, PF1 )
crS Compressor start delay (secs)
drE
Time between defrosts (hrs)
dLi
Defrost termination temperature (°C)
dto Defrost termination time (mins). Unused if set to zero
Defrost Function
Alarm Function
ALo Low temperature alarm setting (°C)
Ahi High temperature alarm setting (°C)
AdL Alarm delay (min)
00 = Instantaneous audible alarm
01.120 = Duration of delay (min)
— 01 = Alarm is disabled
Ain Determines which probe is monitored for alarm functions
1 = Air probe (prode 1)
2 = Evaporator probe (probe 2)
3 = Food probe (probe 3)
Thermal Mass Simulation
oS1 Air probe offset (°K)
oS2 Evaporator probe offset (°K)
oS3 Food probe offset (°K) — where fitted
SiM Controls the thermal mass volume simulated by the controller
and displayed on the fascia. The greater the value the greater
the resulting display slow down. The controlling function
remains to operate directly on air temperature.
00 = Instantaneous air temperature display
01.200
= Thermal mass simulation
Adr
Controller peripheral number — only used where controllers
are networked
drP Drain down time (mins)
diS Display during defrost
00 = Temperature display
— 01 = DEF is displayed during defrost and until air
temperature falls below the value setpoint —
hysteresis.
1.30 (mins) = dEF is displayed during defrost and until the
set
time has elapsed after defrosting or until air
temperature falls below the value se
hysteresis.
dtY Defrost type
FAn = Off cycle defrost
ELE = Electric heater defrost
GAS = Hot gas defrost
doP Defrost optimisation
con = At regular intervals of drE (hrs)
Acc = Defrost timer only runs while evaporator
temperature is below 0°C, defrosting occurs when drE time
has elapsed e.g. if compressor cycle time is 5 min run and 5
min stop and drE = 4, defrosting will take place every 8 hours
Evaporator Fan Control
Fct Evaporator fan control during cooling
— 01 = Continuous operation
00 = Cycle on/off with compressor
1.10 (mins) = Start with compressor, set time delay stop
after compressor
Frs Fan delay temperature following defrost (°C)
Fid Evaporator fan operation during defrost
00 = off until fan delay temperature FrS (°C)
is reached
01 = On while evaporator temperature is below
value FrS (°C)
02 = On during defrost
Duet ‘M’ and ‘L’ Series
All controller parameters are factory set for optimum storage conditions.
The parameters should only be adjusted by persons familiar with the
unit operation and controller functions. Certain parameters however
may be adjusted within limits, to suit certain storage needs.
1
5 6
3
4
7
2
Check Set Point —
Low point of temperature band
Press button 1
Increase Set Point
Press and hold button 1
Press button 3
until required temperature is displayed
Decrease set point
Press and hold 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
PF1 or PF2: Indicates a probe failure — call engineer
Adjustment Parameters
Freezer: Set Point -21°C
Meat: Set Point -2°C
Control Panel
The control panel contains a microprocessor temperature controller indicator automatically controlling the required process to maintain the correct
storage temperature within the coldroom and initiate and control defrost and evaporator fan functions.
The controllers are pre-set prior to leaving the factory but should it be necessary to make an adjustment the following procedures should be
followed.
MICROPROCESSOR CONTROLS
Duet ‘H’ Series
All controller parameters are factory set for optimum storage conditions. The parameters should only be adjusted by persons familiar with the unit
operation and controller functions. Certain parameters however may be adjusted within limits, to suit certain storage needs.
DUET HIGH TEMPERATURE UNITS WITH LDU 15 CONTROLLER – 00-555357
Temperature Controller
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.
It is strongly advised that before adjusting any Service Parameters a thorough understanding of the following instructions should be obtained.
LDU 15 CONTROLLER
lae
aux
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 +3°C.
Exit from set up occurs after 10 seconds if no button is pressed.
Controller Set Up.
The parameters are accessed by pressing the following keys in succession + “set” + and keeping them pressed for 3 seconds.
Access to the parameters has been achieved with the first parameter SCL being displayed.
To pass from one parameter to the next press either the or key
To display the value press. “set”
To change the value press “set” + to increase, or “set” + to decrease.
Exit from set up by pressing “aux” or is automatic after 30 seconds if no buttons are pressed.
set aux
8 9
CDC 122