Freeze Cycle Discharge Pressure High Checklist; Improper Installation - Manitowoc SD0302A Technician's Handbook
S series;
s300 series;
s420 series;
s450 series;
s500 series;
s850 series;
s1000 series;
s1200 series;
s1400w series;
s1400a series;
s1400n series;
s1800w series;
s1800a series;
s1800n series
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Also See for SD0302A:
- Technician's handbook (301 pages) ,
- Service manual (168 pages) ,
- Installation, use & care manual (68 pages)
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FREEZE CYCLE DISCHARGE PRESSURE
HIGH CHECKLIST
Improper Installation
•
Refer to "Installation/Visual Inspection Checklist"
(page 108)
Air Condenser
•
Dirty condenser filter
•
Dirty condenser fins
•
High inlet air temperature (Self contained 110°F/
43°C max. Remote 120°F/49°C max.).
•
Condenser discharge air recirculation
•
Defective fan cycling control (page 167)
•
Defective fan motor
•
Defective head pressure control valve {Remotes}
(page 164)
Water Condenser
•
Low water pressure [20 psig (138 kPa) min.]
•
High inlet water temperature (90°F/32°C max.)
•
Dirty condenser
•
Dirty/Defective water regulating valve
•
Water regulating valve out of adjustment
Other
•
Overcharged
•
Non-condensable (air) in system
•
Wrong type of refrigerant
•
Non-Manitowoc components in system
•
High side refrigerant lines/component restricted
Part Number 80-1479-3 7/10
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