Arrow Pneumatics RH203, Инструкция по эксплуатации и техническому обслуживанию

Страница: 15 / 23

15
Dryer fails to
pressurize Faulty purge valve 1. Check purge valve and its solenoid
valve. Refer to earlier steps if no
pilot air is detected.
2. Check timer sequencing.
PROBLEM PROBABLE CAUSE CORRECTIVE ACTION
Dryer
depressurizes
too rapidly Purge valve does not close; dryer
depressurizing through purge
valve. 1. Check purge valve and its solenoid
valve. Refer to earlier steps if pilot
air is detected.
2. Check depressurization timer
circuit.
Dryer fails to
purge Purge valve does not open;
Purge valve stuck in closed
position. 1. Check timer micro-switch.
2. Check solenoid valve. Repair and
replace if necessary.
Excessive back
pressure in
regenerating
tower (above
5PSIG)
Outlet check valve stuck open
1. Refer to Purge Muffler replacement
procedure.
Purge muffler is clogged 1. Refer to Purge Muffler replacement
procedure.
Purge muffler is clogged
1. Clean and/or replace.