Kysor/Warren 6RLG3, Руководство по установке и эксплуатации, Страница: 48 / 92

ADJUSTMENTS
This chapter provides the adjustments that can be made to the Kysor//Warren case.
Expansion Valve and Superheat
Caution: During service of this equipment, precautions should be taken to prevent loss
of refrigerant to the atmosphere.
The expansion valve furnished with your case has been sized for maximum coil efficiency. To
adjust superheat perform the following:
1. Place a thermocouple near the expansion valve bulb. Read the suction line pressure as near
coil as possible. (If at the condensing unit, estimate suction line loss at 2 PSIG).
2. Convert coil suction pressure to temperature. The difference between coil temperature and
the thermocouple temperature is superheat. (Use average superheat when expansion valve
is hunting).
3. Do not set superheat until cases have pulled down to operating temperature and never open
or close the valve over ¼ turn between adjustments and allow 10 minutes or more between
adjustments.
4. Superheat should be set to 6-8°F.
5. After the initial setting, the superheat should be rechecked when product is stocked and at
designed temperature.
Superheat Calculations
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