Sagi HD70, Operator'S Handbook Manual

Page: 83 / 175

9
A1b -99 99 °C/°F (6) 15 upper temperature alarm threshold; look at A2b as well
A2b 0 2 - 1
kind of upper temperature alarm (0 = it will never be activated, 1 = upper temperature
alarm relative to the working setpoint, 2 = absolute upper temperature alarm)
A3 0 240 min 120
temperature alarm exclusion time since you turn the instrument ON (it is
important if A2b
≠
0) (13)
A6 0 240 min 15 temperature alarm exclusion time (it is important if A2A and/or A2b
≠
0) (14)
A7 0 240 min 60
temperature alarm exclusion time since the end of the after dripping evaporator
fan delay (it is important if A2b
≠
0) (13)
LABEL MIN. MAX U.M. DEF. EVAPORATOR FAN
F1 -99 99 °C/°F (6) -1
evaporator fan stop temperature (evaporator temperature, it is important if
/Ab=1 and if F7=3 or 4); look at F6 as well
F2 0.1 15 °C/°F (6) 2 hysteresis (differential, it is relative to F1, it is important if /Ab=1 and if F7=3 or 4)
F4 0 2 - 0
evaporator fan action during the defrost and dripping (0=it will be forced OFF,
1=it will be forced ON, 2=it will work in accordance with F7)
F5 0 15 Min 3 after dripping evaporator fan delay
F6 0 1 - 0
kind of evaporator fan stop temperature (it is important if F7=3 or 4; 0=absolute
evaporator fan stop temperature, 1=evaporator fan stop temperature relative to
the cabinet temperature) (15)
F7 0 4 - 1
evaporator fan action during the normal operation (0=it will be forced OFF, 1=it
will be forced ON, 2=it will work in accordance with the compressor, 3=it will
work in accordance with F1 and F2, 4=if the compressor is ON, it will work in
accordance with F1 and F2, if the compressor is OFF, it will be forced OFF)
LABEL MIN. MAS. U.M. DEF. KIND OF CONTACT OF THE EVAPORATOR VALVE
ur 0 1 - 1 kind of contact of the evaporator valve (0 = NC, 1 = NO)
LABEL MIN. MAX U.M. DEF. SERIAL NETWORK(EVCOBUS)
L1 1 15 - 1 instrument address
L2 0 7 - 0 instrument group
L4 0 3 - 1 baud rate ( 0=1.200 baud, 1=2400 baud, 2=4800 baud, 3=9.600 baud)
(6) the unit of measure depends on the parameter /8
(7) unless the evaporator temperature is below the defrost end temperature you have set with the parameter d2, the defrost will not be activated
(8) once you have modified the value of the parameter, you will have to switch off the power supply of the instrument
(9) if the parameter has value 0, the defrost will end by time (parameter d3); if the parameter F7 has value 3 or 4, the evaporator fan will work in accordance
with the compressor, except what you have set with the parameters F4 and F5
(10) if the time the compressor is ON is lower than 30 s, the compressor will never be ON; if the cabinet probe failure takes place during a compressor
delay, the compressor will be forced OFF for 1 min; the parameter C1 sets the minimum delay between the end of the cabinet probe failure and the
following activation of the compressor (if the parameter C1 has value 0, the compressor will be forced off for 2 min)
(11) if at the moment of the defrost activation the cabinet temperature is below the value “working se r0” , the instrument will not show temperatures
above that value; if at the moment of the defrost activation the cabinet temperature is above the value “working se r0” , the instrument will not show
the increases of the temperature (if the increase takes place below the value “working se r0” , look at the previous case); the instrument restores the
normal operation once the after dripping evaporator fan delay ends and the cabinet temperature falls below the freeze temperature
(12) if at the moment of the defrost activation the compressor is ON since a time lower than the one you have set with the parameter, the compressor will
be forced ON for a time such as to finish the time you have set with the parameter
(13) if the lower temperature alarm takes place during the count of the delay, this last will be cleared
(14) if the temperature alarm does not disappear at the end of the time you have set with the parameter A3, it will further be excluded for the time you have
set with the parameter A6; if the temperature alarm takes place during the defrost and does not disappear at the end of the time you have set with the
parameter A7, it will further be excluded for the time you have set with the parameter A6
(15) the evaporator fan stop temperature is “cabinet temperature – F1”; you always have to consider the parameter F1 with positive sign.
“NEGATIVE TEMPERATURE” (49a)
Setting the working setpoint
•
make sure the keyboard is not locked and no procedure is running
•
press LED will flash
•
press or , within 15 seconds to change the temperature value.
•
after changing the value, confirm by pressing , or avoiding any operation for 15 seconds.
You also can modify the working setpoint through parameter
SP .
Working setpoints
LABEL MIN. MAS. U.M. DEF. WORKING SETPOINTS
r1 r2 °C/°F (1) -20 working setpoint
Setting configuration parameters
To gain access the procedure:
•
make sure no procedure is running
•
press and 4 s: the display will show “ PA ”
•
press