WALKER FILTRATION PD015 - Troubleshooting; General Troubleshooting Checks

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Pro Dry Instruction Manual | Walker Filtration | www.walkerltration.com
Section 8: Troubleshooting
Troubleshooting
General troubleshooting
Before specic identication of any fault is looked for, the following general points must be veried:
• Has the unit been damaged externally or are any parts missing?
• Is power being supplied to the unit?
• Was start-up carried out in accordance with the instructions in this manual?
• Are all external valves correctly set for operation?
• Dotheoperationalconditionsmeetthosespeciedattimeoforderingandusedforproductselection?
Troubleshooting: General
Problem
Possible Cause Action
Poor dewpoint Liquid water at dryer inlet Check pre-filtration and drains
Excessive flow Check actual flow against maximum
specified
Low inlet pressure Check against specification
High inlet temperature Check against specification
Silencer blocked or damaged Replace silencer
Air leaks Tighten joints or fit new seals
Desiccant life exceeded Replace desiccant cartridges
Desiccant contaminated Check inlet lter and drains,
replace cartridges
EM is active when air is owing
through dryer
Check EM wiring, logic and/or control
method used
Power to dryer off while air is owing
through dryer
Ensure that power is on whenever air is
owing through dryer
Incorrect dryer operation Jammed shuttle valves or faulted electrical
components
See electrical operation troubleshooting
section
Excessive or loud purge, or purge on
only one tower
Jammed Main Shuttle Valve Clean or replace shuttles
Jammed Purge Exhaust Shuttle (PD2) Clean or replace exhaust shuttles
Faulty Solenoid Valve Clean or replace solenoid valve
Not utilizing Energy Management feature Refer to Energy Management instructions
(Section 8)