HANKISON SPXFLOW HSHD-21

Questions and Answers

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Miguel SweeneyJul 25, 2025
Why is there water in my HANKISON SPXFLOW HSHD-21 Dehumidifier compressed-air system?
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  Dr. Douglas AdamsJul 25, 2025
  If there's water in your HANKISON Dehumidifier's compressed-air system, it could be due to several reasons. Condensate residues might have formed before starting the dryer. In this case, blow out the compressed-air system with dry air until no more moisture condenses out, opening the collection point at the most remote position if possible. Alternatively, the bypass may be open, so ensure it is closed. It's also possible that condensate from the prefilter is not being properly separated, requiring a check and repair by trained staff if necessary. Finally, if the operating parameters have changed since the dehumidifier was installed, correct them back to the original design specifications.
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Amanda KeithJul 31, 2025
Why is there high pressure loss in my HANKISON SPXFLOW HSHD-21 Dehumidifier?
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  clarkejacobJul 31, 2025
  A high pressure loss through your HANKISON desiccant compressed air Dehumidifier may be caused by an overloaded pre- or after-filter cartridge. Replace the filter cartridge to resolve this. Also, verify that the operating parameters are consistent with the dryer's original design; if they've changed, restore them to the specified conditions.
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Kimberly WalkerAug 4, 2025
What to do if my HANKISON SPXFLOW HSHD-21 display shows 204 PDP Alarm?
- C
  Carrie EatonAug 4, 2025
  If your HANKISON Dehumidifier displays error code 204 (LED Warning/ Service/ Alarm flashes red) indicating a PDP Alarm, it could be due to several reasons. The desiccant dryer may have only been switched on briefly; in this case, operate it for a while with a low load. Alternatively, the desiccant dryer might be overloaded, so adapt the operating conditions to the permitted parameters. It's also possible that the PDP sensor is defective, so check the PDP sensor and replace it if needed.
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Jill MccarthyAug 15, 2025
How to fix HANKISON SPXFLOW HSHD-21 error 210 PDP Sensor cable break?
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  Steven PetersonAug 15, 2025
  If your HANKISON Dehumidifier displays error 210 (LED Warning/ Service/ Alarm glows red) indicating a PDP Sensor cable break, it could be due to a broken PDP sensor cable. Check the electrical connection and replace the cable if necessary. Another possibility is that the PDP sensor is not connected, in which case you should switch off the PDP control.
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Jeffrey HollowayAug 20, 2025
What does error 310 mean on my HANKISON SPXFLOW HSHD-21 and how do I resolve it?
- R
  Ricky WellsAug 20, 2025
  If your HANKISON Dehumidifier displays 310 (LED Warning/ Service/ Alarm glows yellow) indicating that the service time has expired, you need to carry out maintenance and then reset the service counter.
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Jessica AlvaradoNov 8, 2025
What to do if HANKISON Dehumidifier displays 202 drain warning?
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  jerrycastanedaNov 8, 2025
  If your HANKISON Dehumidifier displays 202 (LED Warning/ Service/ Alarm flashes yellow) indicating a drain warning, it means condensate is not being separated. Press the TEST button on the condensate discharger. If condensate isn't discharged, check the power supply to the solenoid coil; if powered, replace the printed circuit board. Also, ensure the dryer and condensate discharger are pressurized (min. 0.8bar / 11.6psi). If pressurized, check for blockages in the outlet pipe behind the discharger and clean if necessary. If no blockages are found, disconnect power and ensure the device is pressure-less, then dismantle the solenoid diaphragm, remove any obstructions, and examine the diaphragm, replacing it if damaged. Clean the housing and sensors thoroughly. If condensate and air are disch...

Summary

General Safety Information

Receiving, Storing, and Moving

Procedures for receiving, storing, and handling the dryer.

Receiving and Inspection

Process for checking shipment for visible loss or damage.

Storing

Guidelines for storing the dryer indoors and temperature range.

Handling

Safety precautions for lifting and moving the dryer.

Description

Function

Explains how dual tower desiccant dryers work to dry compressed air.

Operation

Describes the drying and regeneration circuits of the dryer.

Installation and Mounting

Location of Installation

Specifies requirements for dryer placement and clearance.

Service Clearance

Visual guide for required maintenance space around the dryer.

Mounting

Safety warnings and precautions for mounting the dryer.

Connection to the Compressed Air System

Details on connecting the dryer to the air supply system.

Connection to the Dryer

Notes on initial setup and connections before operation.

Pre-and After- Filter

Importance of oil removal and dust filters for dryer function.

Piping

Recommendations for connecting piping to the dryer.

Electrical Connection

Instructions for connecting the dryer to the power supply.

Potential Free Contacts

How to fix externally connected cables for control.

Network Connection

Guidance on connecting the network cable to the controller.

Ambient Conditions

Recommended operating temperature range and precautions.

Initial Start-Up

Preconditions

Checklist of requirements before starting the dryer for the first time.

Switching ON the Dryer

Step-by-step procedure for turning the dryer on.

Operation

Reference to maintenance chapter for operational details.

Switching OFF the Dryer

Procedure for safely turning the dryer off.

Operation

Preconditions for Operation

Conditions that must be met before operating the dryer.

Switching ON the Dryer

How to turn the dryer on for normal operation.

Operation

Reference to maintenance chapter for operational details.

Switching OFF the Dryer

Steps to safely shut down the dryer.

Controls (Panel)

Overview of the dryer's control panel and indicators.

Start Screen

Describes the initial display on the graphic interface.

Message History

How to view and interpret system messages and alarms.

Remote On;Off Settings

Configuration options for remote control of the dryer.

Setting Menu

How to set target pressure dewpoint and alarms.

Network and Service Configuration

Settings for service counter, IP, subnet, and gateway addresses.

Purge Air Consumption

Details on purge air flow rates and timer board settings.

Servicing and Maintenance

Nameplate

Information found on the dryer's identification plate.

Ordering Consumable Parts and Operating Materials

Guidelines for ordering replacement parts and materials.

Weekly Maintenance

Recommended maintenance tasks to be performed weekly.

Annual Maintenance

Recommended maintenance tasks to be performed annually.

Depressurize the Desiccant Dryer

Procedure to safely remove pressure from the dryer before servicing.

Replacement of Desiccant

Procedure for replacing the desiccant material.

Replacement of Purge Solenoid Valves

Guidance on replacing purge solenoid valves.

Prefilter;Afterfilter Maintenance

Procedures for maintaining pre-filters and after-filters.

Element Replacement

How to replace filter elements.

Procedure for Element Replacement

Detailed steps for replacing filter elements.

Auto Drain Mechanism Replacement

Recommendation to replace the auto drain mechanism annually.

Troubleshooting Guide

Water in the compressed-air system

Identifies causes and remedies for water in the air system.

High pressure loss through the desiccant compressed air dryer

Troubleshooting high pressure drop issues.

Display: 310

Explains the meaning of display code 310 and its resolution.

Display: 202

Explains display code 202 (Drain warning) and its remedies.

Display: 204

Explains display code 204 (PDP Alarm) and its causes/remedies.

Display: 210

Explains display code 210 (PDP Sensor cable break) and its remedies.

Technical Data

Maximum Purge Flow

Data on maximum purge flow for different models.

Ambient Temperature

Technical specifications for ambient operating temperatures.

Electrical Data

Electrical specifications including voltage, current, and power.

Desiccant

Technical data on desiccant type, volume, and charge.

Condensate

Information on condensate separator connections.

Measurements, Weights

Physical dimensions and weight specifications.

Nominal Air Flow

Technical data on nominal air flow rates.

Correction Factors

Factors for adjusting performance based on working pressure and temperature.

Replacement Parts & Maintenance Kits

Replacement Parts

List of individual replacement parts and their part numbers.

Maintenance Kits

Catalog of maintenance kits for different service intervals.

Drawings

General Arrangement: HSHD-7

Dimensional drawing for the HSHD-7 model.

General Arrangement: HSHD-13

Dimensional drawing for the HSHD-13 model.

General Arrangement: HSHD-18

Dimensional drawing for the HSHD-18 model.

General Arrangement: HSHD-21

Dimensional drawing for the HSHD-21 model.

General Arrangement: HSHD-27

Dimensional drawing for the HSHD-27 model.

General Arrangement: HSHD-40

Dimensional drawing for the HSHD-40 model.

P&I Diagram

Piping and Instrumentation diagram for the dryer system.

LEGEND

Explains symbols used in the P&I diagram.

Electrical Schematic

Wiring diagram illustrating the dryer's electrical connections.

Electrical Schematic With Electronic Drain Option

Wiring diagram for the electronic drain option.

WARRANTY

Warranty Period

Details the warranty duration for parts and labor.