WALKER FILTRATION PROSFD PD0046 - User Manual

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PROSFD

PROSFD

PROSFD

Table of Contents

Questions and Answers

L
lucerojacquelineAug 17, 2025
What to do if my WALKER FILTRATION PROSFD PD0046 has excessive or loud purge, or purge on only one tower?
- G
  George MartinAug 17, 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.
A
austinburnsAug 21, 2025
What to do if my WALKER FILTRATION PROSFD PD0046 does not enter Energy Management when switching device is activated and/or Dryer does not enter Energy Management when EM contacts are opened?
- K
  katherine33Aug 21, 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.
C
christensenethanAug 25, 2025
What to do if my WALKER FILTRATION PROSFD PD0046 has no function?
- D
  Deborah SchmittAug 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.
S
Sheena RobbinsAug 27, 2025
What to do if my WALKER FILTRATION PROSFD PD0046 Dryer does not activate external alarm when display panel indicates alarm condition?
- D
  Dennis RyanAug 28, 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.
D
Dr. Amber SmithAug 31, 2025
Why won't my WALKER FILTRATION Dryer switch towers?
- M
  matthewspamelaAug 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.
G
George LeeSep 3, 2025
Why won't my WALKER FILTRATION Dryer depressurise towers?
- J
  jessewebbSep 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.
M
Molly GreeneSep 6, 2025
What to do if my WALKER FILTRATION Dryer does not enter dewpoint mode?
- E
  eramosSep 6, 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.
T
Thomas RamosSep 10, 2025
Why is my WALKER FILTRATION PROSFD PD0046 Dryer controller displaying hygrometer out of range?
- M
  Melissa ClarkSep 10, 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.
W
William WilliamsNov 13, 2025
Why is my WALKER FILTRATION Dryer dewpoint poor?
- S
  Sean PerryNov 13, 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

Safety Guidelines

Essential safety guidelines for operating and maintaining the dryer.

General Description

Function of the Dryer

Explains the operational principle and process of the PRODRY desiccant dryer.

Primary Components

Technical Data

Sizing

Details the process and factors for selecting the correct PRODRY dryer model.

Mechanical Installation

Reconfiguration of the inlet; outlet ports

Connecting the pre-filter to the dryer

Installing the hygrometer (DMC models only)

Purge Orifice Size Identification

Guidance on identifying and selecting the correct purge orifice size for the dryer.

Purge Valve Assembly

Electrical Installation

PRODRY Controller power supply options

LED Controller Specifications

DMC Controller Specifications

How to wire a DIN connector

Step-by-step guide for wiring a DIN connector for controller connections.

Alarm connection details

Operation

Background; Function of the dryer

Explains the operational principle and process of the PRODRY desiccant dryer.

Detailed Operational Description - LED Controller

Detailed Operational Description - DMC Controller

Start-up procedure

Step-by-step instructions for safely starting up the dryer unit.

Shut-down Procedure

Step-by-step instructions for safely shutting down the dryer unit.

Energy Management

Developing a Purge Control Strategy

Using a Manual Switch for Purge Control

How to use a manual switch to control dryer purge during low demand periods.

Using a Standard Pressure Switch for Purge Control

Using pressure switches to automatically shut off dryer purge.

Using an Electronic Pressure Switch for Purge Control

Employing electronic pressure switches for advanced purge control.

Using a hygrometer and process controller for purge control

Optimal purge control using hygrometers and process controllers for critical dewpoint needs.

Making connections between a switching device & dryer Energy Management contact

Instructions for wiring external devices to the Energy Management contacts.

Maintenance

Service Intervals; Applicable Service Kits

Recommended service intervals and corresponding service kits for dryer components.

Spares Information

Service kits

Details on various service kits available for different maintenance intervals and dryer models.

Troubleshooting

General troubleshooting

General checks and common issues before diagnosing specific faults.

Troubleshooting: Electrical

Diagnosing and resolving electrical faults related to dryer operation.

Troubleshooting: Energy Management

Troubleshooting issues with the Energy Management feature.

Troubleshooting: Dewpoint control (DMC Controller only)

Resolving dewpoint control and hygrometer-related problems on DMC controllers.

Troubleshooting - LED Display Status Identification

Troubleshooting - DMC message layout

Warranty

Warranties and liabilities

WALKER FILTRATION PROSFD PD0046 Specifications

General

Brand	WALKER FILTRATION
Model	PROSFD PD0046
Category	Dryer
Language	English

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