Instruction & Technical Manual | 35
12. Dryer Troubleshooting
12.1 General troubleshooting
Before specific identification of any fault is looked for, the following general points must
be verified:
• Has the unit been damaged externally or are any parts missing?
• Is power being supplied to the unit?
• Was startup carried out in accordance with the instructions in this manual?
• Are all external valves correctly set for operation?
• Do the operational conditions meet those specified at time of ordering and used for
product selection?
The table below gives possible causes and corrective actions to faults that may occur on
the dryer:
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
Replace silencer
damaged
Air leaks
Tighten joints or fit new seals
Incorrect dryer
Jammed shuttle valves or
See electrical operation trouble
operation
faulted electrical
shooting section
components
Figure 9.1:General Troubleshooting Guide
