| Questions |
Cause |
Remedy |
| Are suction lines insulated properly? i.e. from outside of box to compressor. (Hot weather) |
Suction lines improperly or not insulated |
Insulate suction lines |
| Do you have the correct expansion valve? |
Oversized expansion valve |
Replace with properly sized expansion valve |
| Where is expansion valve bulb located? |
Expansion valve bulb in improper location |
Move expansion valve bulb |
| Is expansion valve bulb insulated? |
Expansion valve bulb improperly or not insulated |
Insulate expansion valve bulb properly |
| Is expansion valve in proper adjustment? |
Expansion valve overfeeding |
Adjust expansion valve until proper superheat is reached |
| Is system capacity sufficient for product load? |
Product load greater than system capacity |
Add additional units or replace |
