General Air Products Dry Air Pac DAP1000, Инструкция по установке, эксплуатации и обслуживанию

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Section 7 - Trouble Shooting Guide
Problem Possible Causes Solution
Excessive Pressure Drop
Low inlet pressure. Lower flow rate to system.
Switching valve failure.
Check tower-operating sequence to
verify and identify which valves are
operating.
Desiccant breakdown Change desiccant
Clogged filters Change filter elements
Valve shut Open valve
Repressurization Failure or Purge
Failure/ Tower Back-pressure
Purge flow control valve orifice clogged. Clean or replace.
Failed check valve. Replace.
Purge exhaust solenoid valve failure.
Turn dryer off, check connections to
PLC, inspect valve and solenoid,
replace if necessary.
Purge exhaust muffler clogged. Clean or replace.
Controller screen on unit not running Insufficient / low voltage
Check voltage to and from transformer.
Supply correct voltage to unit.