Troubleshooting - Beko DRYPOINT ACC 46 Instruction Manual

Section 11: Troubleshooting

Troubleshooting

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 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 specified at time of ordering and used for product selection?
• Did the dryer operate normally for a period of time before the problem occured?
Before calling for service assistance, please obtain dryer model and serial
number from dryer specification label.
Troubleshooting: General
Problem
Poor dewpoint
Incorrect dryer operation, won't
switch towers
Incorrect dryer operation, won't
depressurize towers
Excessive or loud purge,
or purge on only one tower
46
Possible Cause
Liquid water at dryer inlet
Excessive flow
Low inlet pressure
High inlet temperature
Incorrect purge orifice size
Silencer blocked or damaged
Air leaks
Desiccant life exceeded
Desiccant contaminated
EM is active when air is flowing
through dryer
Power to dryer off while air is flowing through dryer
Jammed shuttle valves
Faulted electrical components
Jammed purge exhaust shuttle
Blocked and/or damaged silencer
Jammed main control shuttle valve
Jammed purge exhaust shuttle
Faulty solenoid valve
Not utilizing Energy Management feature
Blocked and/or damaged silencer
Damaged purge valve(s)
Incorrect purge orifice size
Action
Check pre-filtration and drains
Check actual flow against maximum specified
Check against specification
Check against specification
Check against specification and reconfigure
Replace silencer
Tighten joints or fit new seals
Replace desiccant cartridges
Check inlet filter and drains,
replace cartridges
Check EM wiring
Ensure that power is on whenever air is flowing through dryer
Clean or replace shuttles
See electrical operation troubleshooting section
Clean or replace exhaust shuttles and solenoid valves
Replace silencer
Clean or replace shuttles
Clean or replace exhaust shuttles
Clean or replace solenoid valve
Refer to Energy Management instructions (Section 7)
Replace silencer and check desiccant cartridges
Replace purge valve bodies
Double check and select correct size
Heatless Desiccant Dryers | Instruction Manual