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9.
TROUBLESHOOTING GUIDE
The troubleshooting and the eventual checks must be performed by qualified personnel only.
The technician that services the machine must wear hearing and eye protection while servicing the dryer.
Each employee must select a proper personal protection device (PPD) hearing protector such as earmuffs,
ear canal caps or earplugs in order to prevent permanent hearing damage or loss.
SYSTEM TROUBLE
T he service LED
Service Reminder
on
the controller is
flashing amber
Service Due
or red.
Dryer stopped
No power
Valve problem
No pilot control air
Solenoid valves
Controller
Compressor off
All the inlet air
Faulty inlet valve
is discharged
Faulty signal
through the
silencers
Faulty Outlet valve
Pneumatic
Liquid comes out
High dew point
of the silencers
Overloaded
No power
Flow control valve
No pilot control air
Exhaust Silencers
Repressurization Purge Exhaust Valve
Purge line
Purge Valve
Inlet Valve
DRYPOINT® XC Series Heatless Regenerated Dryers: IOM10003
POSSIBLE CAUSE
I f the service LED indicator light is flashing amber this is
I f the service LED indicator light is flashing red then the dryer
Check power and electric
Check the operation of inlet and purge exhaust valves
Ensure Control pilot air is delivering at 80 psi
Ensure DIN connectors are properly attached to solenoid valves
See controller troubleshooting
Check if compressor Sync is commanding dryer off
The inlet valves are blocked – open and clean
T he controller continuously supplies solenoid valve PVA and/or
O utlet Check valve(s) stuck open – serviceable only by qualified
Ensure tube routing matches diagram
Ensure operation sequence and purge setting
Check capacity versus operating conditions
Check purge exhaust valve for normal operation
Ensure that the purge exhaust valve actuators is not closed
Ensure pilot air reading is 80 psi
Replace silencer filter elements if clogged
See purge Exhaust Valve troubleshooting
Purge setting or clog, full open purge valve to clean out and
then set according to table xx
See Purge valve troubleshooting
See Inlet Valve Failure troubleshooting
SUGGESTED ACTION
an indication that the dryer is approaching the annual
maintenance interval, and schedule maintenance should be
performed within the next 5-days. – 360 hours
is overdue for scheduled maintenance by approximately one
month, and should be serviced immediately to ensure trouble
free operation. – 400 hours
PVB – check the electric wiring and if necessary replace
technician
(Rev.I)
22
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