Blue Box - 88
TABLE 6 - CALIBRATION OF SAFETY DEVICES
CAPACITY STEPS
CONTROL ELEMENT
SET POINT
DIFFERENTIAL
SET POINT
DIFFERENTIAL
Service calibration (summer)
°C
10
2
9
3
Service calibration (winter)
°C
42
2
43
3
2
4
NOTE:
(*) Chiller / Version HP/LC
(**) Only version HP/LC with remote condensers/evaporators supplied by Blue Box
ACTIVATION
DIFFERENTIAL
RESET
SET POINT
No-frost setting
°C
3
6
manual
Maximum pressure switch setting
bar
27
7
manual
Minimum pressure switch setting
bar
2.5 / 0.7 (*)
1
manual (from controller)
Evaporator heater setting
°C
3
6
automatic
Defrost start setting
bar
2
--
automatic
Defrost end setting
bar
18
--
automatic
Defrost end thermostat setting
°C
5
--
automatic
Defrost pressure switch setting
bar
16
2
automatic
CONTROL ELEMENT
11. CALIBRATION OF CONTROL EQUIPMENT
11.1 INTRODUCTION
All the control equipment is factory calibrated before the machine is shipped. Control equipment and safety
devices should nonetheless be checked after a reasonable period of operation. Calibration values are given in
Tables 5 and 6.
All service operations on the control equipment must be carried out by
QUALIFIED PERSONNEL ONLY; incorrect calibration values can cause
serious damage to the unit and personal injury.
TABLE 5 - CALIBRATION OF CONTROL EQUIPMENT
Summary of Contents for SIGMA 2002
Page 2: ......
Page 99: ...Blue Box 93 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 SIGMA 2002 DC MODELS 3 2 13 2...
Page 100: ...Blue Box 94 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 SIGMA 2002 DC MODELS 14 4 26 4...
Page 101: ...Blue Box 95 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 HP MODELS 3 2 8 2 14 4 16 4...
Page 102: ...Blue Box 96 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 HP MODELS 9 2 13 2 18 4 26 4...
Page 103: ...Blue Box 97 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LE SIGMA 2002 LE DC MODELS 3 2 26 4...
Page 104: ...Blue Box 98 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LE HP MODELS 3 2 26 4...
Page 105: ...Blue Box 99 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC MODELS 3 2 13 2...
Page 106: ...Blue Box 100 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC MODELS 14 4 26 4...
Page 107: ...Blue Box 101 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC HP MODELS 3 2 13 2...
Page 108: ...Blue Box 102 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC HP MODELS 14 4 26 4...
Page 109: ...Blue Box 103 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC DC MODELS 3 2 13 2...
Page 110: ...Blue Box 104 REFRIGERANT CIRCUIT DIAGRAM SIGMA 2002 LC DC MODELS 14 4 26 4...
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