4-2
“Oil-Less” Scroll Laboratory Air
4107 9006 25.11
4.0 Trouble Shooting
Problem
Possible Causes
Solution
Low discharge pressure
System piping leaks
Repair leaks
Defective pressure sensor
Replace sensor
Aftercooler drain solenoid stuck
open
Check electrical connections
Belts slipping
Adjust tension
Intake fi lter clogged
Clean or replace
Compressor cycles too often
System undersized
Contact
BeaconMedæs
Faulty pressure sensor
Replace sensor
System piping leaks
Repair leaks
Check valve or line to receiver is
leaking or plugged
Replace if necessary
Both dryers on line
Valve off one dryer
Water in air receiver
Drain air receiver
Compressor won’t shut off
Pressure sensor faulty
Adjust or replace
Excessive belt wear
Belt tension
Adjust tension
Belt alignment
Realign compressor & motor sheaves
Abnormal noise
Mounting bolts loose
Tighten bolts
Belt tension
Adjust tensions
NOTE:
For air dryer touble shooting, see Appendix A.