Section 10
Troubleshooting
Problem Possible Cause Solution
LEDS not lighting up Loose connections or incorrect voltage Attend to the power supply.
Tower-status LED not changing 1) Controller faulty 1) Change the controller
2) Solenoid valve faulty 2) Replace the solenoid valve.*
Status LEDs change but towers 1) Faulty coil connection at DIN and 1) Change the controller.*
not switching terminal connector 2) Replace the solenoid valve.*
in the controller
No purging 1) Faulty solenoid valve 1) Replace the solenoid valve.*
2) Faulty exhaust valve 2) Clean the exhaust valve.
3) Silencer not clean 3) Clean the silencer.
Continuous purging at tower 1 1) Shuttle not closing 1) Clean the shuttle valve.
2) Exhaust valve not closing 2) Call Trident for service support.
Purge loss excessive 1) Outlet shuttle not closing 1) Clean the shuttle.
2) Silencer choked 2) Clean the silencer.
High pressure drop across dryer 1) Pre-filter clogged. 1) Replace filter elements.
2) Dryer overflowing 2) Reduce the flow rate.
Moisture at the outlet or low 1) Purge economiser mode not at 100% 1) Set the economiser mode at
dewpoint or at calculated percentage of the correct value
load factor 2) Call Trident for service support.
2) Valves not functioning properly or 3) Replace the filter element.
dryer not cycling as in normal 4) Replace the desiccant.
operation
3) Pre-filtering of air not adequate
4) Desiccant degraded
* Call Trident for this action.
INSTRUCTION MANUAL - Dryspell Plus
Reference : Manual Version
60
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