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KRSL series
Table 8-1: TROUBLE SHOOTING GUIDE
Symptom
Possible Cause
Solution
Fail to Start
Power failure
Check power supply to the unit
Low incoming voltage
Check voltage and power source or contact
local power company.
Fuse blown
Replace Fuse
Faulty start switch
Check the switch for malfunction or loose
connection.
Emergency button
Reset emergency button
Motor starter overload
tripped
Check motor starter wiring before removing
motor. Remove motor and have tested at
motor manufacturer repair center.
Loose wire connections
Check all wiring terminals for contact and
tightness
Air-end failure
Contact a local authorized distributor.
Compressor
shuts down
during loaded
condition
High ambient
temperature
Make fresh air intake openings or install
ducts to discharge the hot air.
Low incoming voltage
Check voltage and power source or contact
local power company.
High operating pressure
Reset, check line pressure and ensure it does
not exceed the compressor’s maximum
operating pressure.
Low fluid level
Top-up fluid
Display separator
requires maintenance
Replace separator element.
Line pressure
rises above
unload
pressure set-
point
Control system air
leakage
Check for leak
Air filter blocking
Replace air filter element
Air Intake valve stuck
open
Remove the intake hose and check the inlet
valve for proper operation
Defective blow-down
valve
Check the receiver tank to ensure that it is
exhausting air to the atmosphere when the
solenoid opens - repair or replace if
necessary.
Symptom
Possible Cause
Solution
Compressor
does not
reload when
service line
pressure drops
Faulty solenoid
Repair or replace as necessary
Loose wiring connection Check and tighten wiring terminals
Faulty proportional
valve
Orifice plugged. Clean or replace as
necessary
Jammed air inlet valve
assembly
Check and repair air inlet valve