PROBLEM/POSSIBLE CAUSE

CHECKS AND REMEDY

4. During Repressurization Cycle.

4. Check for pilot gas pressure at on-stream chamber exhaust

Purge Exhaust Switching Valve has failed to

valve’s pilot tubing connection.

close due to fouled or worn valve internals.

If pilot pressure is present, Shutdown and Depressurize

 

 

Dryer. Disassemble, clean and inspect the Switching Valve.

 

Replace all worn or damaged parts as noted.

 

 

Valve Failure Alarm with excessive pressure

 

exhausting through muffler. BOTH chamber

 

pressure gauges read normal system pressure.

 

1. During Depressurization Cycle.

1. Check indicator lights at solenoid block to determine whether

Off-stream chamber's Purge Exhaust Valve

energized. Indicator light should be lit if the solenoid coil is

has failed to open due to the associated so-

energized. If not, open control enclosure and check MEC

lenoid valve's (A or D) failure to energize.

Board for output signal to solenoid valve.

 

a) If voltage is present and the indicator at the solenoid block is

 

not lit, Shutdown and Depressurize Dryer. Provide a

 

separate pilot gas source.

 

With the dryer controls de-energized, press the manual over-

 

ride on solenoid valve to determine if functioning. If function-

 

ing mechanically (the purge exhaust valve should open), the

 

solenoid valve coil is defective. Replace solenoid valve coil.

 

Note: The dryer MUST be depressurized to change coils on

 

a solenoid.

 

b) If voltage is present and the purge exhaust valve doesn't open

 

when manual overriding the solenoid valve, the solenoid valve

 

is defective. Replace solenoid valve.

 

c) If voltage is not present, replace MEC Board.

 

 

Valve Failure Alarm.

 

1. Damaged or out of calibration pressure

1. Shutdown and Depressurize Dryer. Replace pressure sen-

sensor.

sor.

 

 

5 - 6 Troubleshooting Guide

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Deltech Fitness LS2580, LS60 During Repressurization Cycle, Not lit, Shutdown and Depressurize Dryer. Provide a

LS60, LS2580 specifications

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