Foster BIT25 Service Manual page 7

English
Parameter Range
OFF
DTY
ELE
GAS
DPD 0 ... 240 sec
DPR 0 ... 20 sec
DRN 0 ... 30 min
RT
DDM LT
SP
DEF
DDY 0 ... 60 min
FID
YES
NO
FDD -50 ... 110°
0 ... 120 min Maximum evaporator fan stop period following defrost (only when 'T2' = 'YES').
FTO
NON
TMP
FCM
TIM
FDT -12.0 ... 0°
FDH 1 ... 12.0 °
FDS 0 ... 120 sec
FT1 0 ... 180 sec
FT2 0 ... 30 min
FT3 0 ... 30 min
NON
ATM
ABS
REL
6
Description
Defrost type:
Timed off cycle defrost (compressor and heater off).
Electric heater defrost (compressor off, heater on).
Hot gas defrost (compressor and heater on).
Evaporator pump down. Timed pause at start of defrost.
Defrosting Pressure Reduction. Period between hot gas valve shutting and com-
pressor stopping (only active when 'DTY' = 'GAS').
Drain down period.
Defrost display mode:
Real (actual) air temperature.
Last temperature display before start of defrost.
The current setpoint value.
"DEF"
Defrost display delay period.
Time 'DDM' is shown following defrost termination.
Fans in defrost:
Fans run during defrost.
Fans do not run during defrost.
Evaporator fan restart temperature following defrost.
(Only if 'T2' = 'YES').
Evaporator fan mode during thermostatic control:
Fan(s) run continuously (subject to door & defrost).
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'.
Time based control. When compressor is on, fans are on.
When compressor is off, fans in accordance to parameters
FT1', 'FT2' and 'FT3'.
Te-Ta difference for fans to turn off after compressor stopped.
(Only if 'T2' = 'YES' and 'FCM' = 'TMP').
Temperature differential for evaporator fan restart.
(Only if 'T2' = 'YES' and 'FCM' = 'TMP').
Minimum evaporator fan stop period (following door opening etc.).
Fan stop delay after compressor stop.
Timed fan stop following 'FT1'.
(With FT2 = '0' the fans remain on all the time).
Timed fan run following 'FT2'.
(With 'FT3' = '0' & 'FT2' > '0' the fans remain off all the time).
Alarm threshold configuration:
All temperature alarms are inhibited (the following parameter will be 'ADO').
The value set in 'ALA' & 'AHA' represent actual alarm setpoints.
The values set in 'ALR' & 'AHR' are alarm differentials which
relate to 'SP' and 'SP' + 'HYS' (the following parameter will be 'ALR').
Defult
Setting
OFF
0
3
2
DEF
10
YES
5
3
NON
-1
3
20
15
0
2
REL