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Parker Airtek TW 250 - User Manual

Parker Airtek TW 250
53 pages
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HEATLESS DESICCANT
COMPRESSED AIR DRYER
MODEL’S 75 - 6000
S/N
INSTALLATION, OPERATION
& MAINTENANCE MANUAL
Service Department
1-800-451-6023

Questions and Answers

  • C
    Cathy TaylorAug 18, 2025
    Why is my Parker Dehumidifier not turning on (no lights)?
    • C
      Cynthia LeeAug 19, 2025
      Your Parker Dehumidifier might not be turning on because of a blown control fuse (replace the fuse), no power supply (apply correct power), or an inoperative solid state controller (replace the controller).
  • K
    Karen YoungAug 21, 2025
    What to do if Parker Dehumidifier has excessive pressure drop?
    • P
      Patricia FieldsAug 21, 2025
      If your Parker Dehumidifier has an excessive pressure drop, the pre-filter is likely dirty (replace the element), the afterfilter is dirty (replace the element), or the desiccant is dirty (replace the desiccant).
  • A
    Aaron HunterAug 26, 2025
    What to do if Parker Dehumidifier lights are on, but the dryer doesn't switch?
    • M
      Morgan BranchAug 26, 2025
      If the lights are on but your Parker Dehumidifier isn't switching, it could be due to a control air shutoff (open the valve), the dryer being in PowerLoc, CycleLoc, or ProPurge mode, or the dryer not being in a 100% load cycle (check the setting). For PowerLoc, CycleLoc, or ProPurge modes consult pages 9-10.
  • R
    Robert CarterAug 28, 2025
    How to fix excessive air loss on the regenerating tower of Parker Dehumidifier?
    • D
      Denise EllisAug 28, 2025
      Excessive air loss on the regenerating tower of your Parker Dehumidifier could be due to: * Purge set too high (check specifications and adjust). * Repressurization solenoid leaking (repair or replace). * Inlet valve leaking or not functioning (repair or replace). * Leaking or inoperative control solenoid (repair or replace). * Defective controller (repair or replace).
  • J
    Julie FarmerAug 30, 2025
    Why Parker Dehumidifier unit does not fully repressurize?
    • R
      rlewisAug 30, 2025
      If your Parker Dehumidifier unit does not fully repressurize, it could be due to a purge rate that is too low (adjust purge), leaking exhaust valves (see above), a faulty repressurization solenoid (replace solenoid), or a plugged purge or repressurization orifice.
  • W
    wendy05Sep 1, 2025
    How to eliminate back pressure in regenerating tower in Parker Dehumidifier?
    • D
      daisy93Sep 1, 2025
      To eliminate back pressure in the regenerating tower of your Parker Dehumidifier, you should check for clogged mufflers (clean, repair, or replace), leaking check valves (clean, repair, or replace), a purge flow that is too high (adjust), or no output from the controller (replace fuse or controller).
  • E
    Elizabeth PhillipsSep 3, 2025
    What causes inlet or exhaust valves not functioning in Parker Dehumidifier?
    • J
      John ArnoldSep 3, 2025
      Inlet or exhaust valves not functioning on your Parker Dehumidifier can be caused by bad diaphragms or O-rings (rebuild valves available kits or replace), no control air (see below), defective control solenoids (repair or replace), or no output from the controller (repair or replace).
  • D
    Danielle PorterSep 6, 2025
    What to do if the exhaust valve on drying or repressurizing tower is leaking in Parker Dehumidifier?
    • R
      Roy EvansSep 6, 2025
      If the exhaust valve on the drying or repressurizing tower of your Parker Dehumidifier is leaking, it could be because the valve is dirty (clean valve), the diaphragms or O-rings are defective (repair or replace), or the control solenoid is leaking (repair or replace).
  • E
    Edward FoxSep 8, 2025
    How to troubleshoot no control air at inlet or exhaust valves in Parker Dehumidifier?
    • A
      Annette GonzalezSep 8, 2025
      If there's no control air at the inlet or exhaust valves of your Parker Dehumidifier, check if the control air shutoff valve is closed (open it), the control air filter is dirty (replace element), there's a leak in the control air tubing (repair), the control solenoid is defective (repair or replace), or there's no output from the controller (replace fuse or controller).
  • M
    Mary SnyderSep 12, 2025
    What causes Parker Dehumidifier failure to switch?
    • B
      Brian CarlsonSep 12, 2025
      A failure to switch in your Parker Dehumidifier can be caused by a time delay setting that is too short (adjust properly, Failure to Switch option only!). It may also be related to the dryer not operating (see above).

Summary

Section 1 Installation and Inspection

Inspection

Procedures for checking the dryer upon arrival for damage.

Installation Requirements

Essential connections and warnings for correct dryer installation.

Section 2 Safety and System Precautions & Section 3 General Operation

Safety and System Precautions

Critical safety measures for operating and maintaining the dryer.

Section 4 Sequence of Operation

Section 5 Start Up & Section 6 Operational Notes

Start Up Procedure

Step-by-step guide for safely starting the dryer.

Section 7 Shutdown Procedures

Isolation and Depressurization

Steps for safely shutting down and depressurizing the dryer.

Section 8 Demand Cycles

Section 11 Troubleshooting Guide

Dryer Not Operating Issues

Diagnosing and resolving issues with dryer operation or switching.

Outlet Dewpoint and Moisture Problems

Identifying causes and solutions for dewpoint and moisture issues.

Air Loss, Pressure, and Control Issues

Troubleshooting air loss, pressure drop, and control air problems.

Section 16 PowerLoc System

Section 18 Warranty

Parker Airtek TW 250 Specifications

General IconGeneral
BrandParker
ModelAirtek TW 250
CategoryDehumidifier
LanguageEnglish

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