AirTek TW15 - 15 Trouble Shooting Guide

Pg. -12-
AIRTEK 4087 WALDEN AVENUE, LANCASTER, NY 14086 Tel: (716) 685-4040 Fax: (716) 685-1010
Complaint:
DRYER NOT OPERATING:
FAILURE TO SWITCH ALARM (Optional):
OUTLET DEWPOINT HIGH:
MOISTURE DOWNSTREAM:
EXCESSIVE AIR LOSS ON REGENERATING TOWER:
EXHAUST VALVE LEAKING DURING
REPRESSURIZATION:
EXCESSIVE PRESSURE DROP:
15. A.
TROUBLE SHOOTING GUIDE:
Possible Cause & Repair:
A: No Lights On:
- Blown control fuse: Replace fuse.
- No power: Apply correct power.
- Solid State Controller inoperative: Replace
B: Lights On, Dryer Does Not Switch:
- Dryer in PowerLoc Mode
- Dryer in CycleLoc Mode
- Time delay setting too short. Adjust properly.
- See dryer not operating
- Dryer not cycling: See Dryer not operating.
- Incorrect purge rate: Adjust purge flow.
- Capacity of dryer being exceeded: Adjust inlet
flow, pressure & temperature to within specified
operating parameters. High flow, low pressure or
high temperature will all adversely effect dryer
performance
- Liquid water present at dryer inlet: Check water
level in separators, receivers, prefilters &
operation of associated y-strainers and auto
drains. Check condition of filter elements or
check D.P. Gauges.
- Desiccant worn out, contaminated or insufficient
quantity: Replace or top off.
- Back pressure in regenerating tank: See below.
- Leaking bypass valve: Remedy.
- Undried air from another source mixing down
stream of dryer: Remedy.
- See Outlet Dewpoint High.
- Purge set too high. Check specifications &
adjust.
- Check valve leaking: Repair, clean or replace.
- Inlet valve leaking or not functioning: See Below
- Defective controller: Repair or replace.
- Valve dirty or defective: Clean or replace valve.
- False signal from control board: replace
- Prefilter dirty: Replace element
- Afterfilter dirty: Replace element
- Desiccant dirty: Replace Desiccant
- Excess flow: Reduce flow to within specs.