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
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