WALKER FILTRATION PROSFD PD0056 - User Manual

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PROSFD

PROSFD

PROSFD

Table of Contents

Questions and Answers

A
Anthony MooreAug 18, 2025
What to do if my WALKER FILTRATION PROSFD PD0056 has excessive or loud purge, or purge on only one tower?
- M
  Mrs. Angela JenningsAug 18, 2025
  If your WALKER FILTRATION dryer has excessive or loud purge, or purge on only one tower, it could be due to several reasons: * Jammed main control shuttle valve: Clean or replace the shuttles. * Jammed purge exhaust shuttle: Clean or replace the exhaust shuttles. * Faulty solenoid valve: Clean or replace the solenoid valve. * Not utilizing Energy Management feature: Refer to Energy Management instructions (Section 7). * Blocked and/or damaged silencer: Replace the silencer and check desiccant cartridges. * Damaged purge valve(s): Replace the purge valve bodies. * Incorrect purge orifice size: Double check and select the correct size.
S
Seth SpencerAug 21, 2025
What to do if my WALKER FILTRATION PROSFD PD0056 does not enter Energy Management when switching device is activated and/or Dryer does not enter Energy Management when EM contacts are opened?
- I
  ihernandezAug 22, 2025
  If your WALKER FILTRATION Dryer fails to enter Energy Management, the issue could stem from: * Shorted or incorrect device wiring: Remove external wiring from the dryer’s EM contacts: * On LED controllers, dryer should enter EM mode. * On DMC controllers, place jumper between pins 1 and 2 of EM male connector. Dryer should enter EM mode. * If dryer enters EM mode, correct external wiring problem * If dryer does not enter EM mode, replace controller * Faulty switching device: Consult device manufacturer. * Faulty controller output: Replace the controller.
R
Rebecca GutierrezAug 25, 2025
What to do if my WALKER FILTRATION PROSFD PD0056 Dryer has no function?
- E
  Eric PhillipsAug 25, 2025
  If your WALKER FILTRATION dryer has no function, check the following: * No power supply: Check the power supply. * Power connected to wrong controller input: Check connections with specifications listed in Section 5. * Faulty controller: Replace the controller.
D
Danielle BlackAug 27, 2025
What to do if my WALKER FILTRATION Dryer does not activate external alarm when display panel indicates alarm condition?
- W
  wdavisAug 27, 2025
  If your WALKER FILTRATION Dryer doesn't activate the external alarm when the display panel indicates an alarm, consider these potential causes: * Shorted or incorrect device wiring: Correct the external wiring. * External power not supplied: Add an external power source per the specifications given in Section 5. * Faulty external indication device: Repair or replace the device. * Faulty controller: Replace the controller.
R
Ricky PhelpsAug 31, 2025
Why won't my WALKER FILTRATION PROSFD PD0056 Dryer switch towers?
- A
  Ariel KleinAug 31, 2025
  If your WALKER FILTRATION Dryer won't switch towers, it could be due to: * Jammed shuttle valves: Clean or replace the shuttles. * Faulted electrical components: See the electrical operation troubleshooting section.
J
jessica86Sep 3, 2025
Why won't my WALKER FILTRATION PROSFD PD0056 depressurise towers?
- N
  Nicholas RangelSep 3, 2025
  If your WALKER FILTRATION Dryer won't depressurize towers, the issue might be: * Jammed purge exhaust shuttle: Clean or replace the exhaust shuttles and solenoid valves. * Blocked and/or damaged silencer: Replace the silencer.
D
Dennis CookSep 7, 2025
What to do if my WALKER FILTRATION Dryer does not enter dewpoint mode?
- P
  Patricia BarberSep 7, 2025
  If your WALKER FILTRATION Dryer does not enter dewpoint mode, consider the following: * Hygrometer Din plug not connected correctly to hygrometer: Check Din plug is tightly connected to hygrometer with the Din plug. * Demand is too high, dryer undersized: Check against specification. * Hygrometer not reading accurately / fouled: Verify hygrometer calibration. * Hygrometer failed (electrically): Replace hygrometer.
D
David Osborn IISep 12, 2025
Why is my WALKER FILTRATION PROSFD PD0056 Dryer controller displaying hygrometer out of range?
- R
  randall94Sep 12, 2025
  Your WALKER FILTRATION Dryer controller may display 'hygrometer out of range' if: * The hygrometer is reading an outlet dewpoint of either +20°C or -100°C, which are the maximum limits of the hygrometer. Check that the hygrometer is functioning correctly and is not damaged.
L
Lisa WalshNov 13, 2025
Why is my WALKER FILTRATION Dryer dewpoint poor?
- E
  Erica JacobsonNov 14, 2025
  A poor dewpoint in your WALKER FILTRATION Dryer may be due to several reasons: * Liquid water at the dryer inlet. Check the pre-filtration and drains. * Excessive flow. Verify the actual flow against the maximum specified. * Low inlet pressure. Check against the specification. * High inlet temperature. Check against the specification. * Incorrect purge orifice size. Check against specification and reconfigure. * Silencer blocked or damaged. Replace the silencer. * Air leaks. Tighten joints or fit new seals. * Desiccant life exceeded. Replace the desiccant cartridges. * Desiccant contaminated. Check the inlet filter and drains, and replace the cartridges. * EM is active when air is flowing through the dryer. Check the EM wiring, DMC, and/or control method used. * Powe...

Summary

Safety

Manual Handling Safety

Guidance on safe practices for lifting, lowering, pushing, pulling, or carrying equipment.

Operation

Dryer Function Overview

Explains the basic operation and function of the PRODRY desiccant dryer.

Operational Descriptions (LED & DMC)

Start-up and Shut-down Procedures

Provides step-by-step guides for safely starting and stopping the dryer.

Energy Management

Overview and Purge Control Strategies

Explains Energy Management and developing purge control strategies.

Manual Switch Purge Control

Pressure Switch Purge Control

Explains using standard and electronic pressure switches for purge control.

Hygrometer & Process Controller Purge Control

Describes using a hygrometer and process controller for optimal purge control.

EM Contact Wiring Guide

Maintenance

Maintenance Information and Service Kits

Outlines where to find maintenance procedures and lists applicable service kits.

Spares Information

Service Kits

Lists various service kits available for dryer maintenance, categorized by hours/years.

Troubleshooting

General Troubleshooting Points

General checks to perform before identifying specific faults in the dryer unit.

Electrical & Energy Management Issues

Solutions for power, controller, alarm, and EM mode problems.

Dewpoint Control & Hygrometer Issues

Diagnoses issues with dewpoint mode, hygrometer readings, and controller display.

LED Display Status Identification

DMC Message Interpretation

Warranty and Liabilities

Warranty Exclusions and Application Notes

WALKER FILTRATION PROSFD PD0056 Specifications

General

Brand	WALKER FILTRATION
Model	PROSFD PD0056
Category	Dryer
Language	English

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