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SPX FLOW Hankison DH-80 - User Manual

SPX FLOW Hankison DH-80
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1
PRESSURE-SWING
DESICCANT TYPE
COMPRESSED
AIR DRYERS
7610.479.9 1/22/97
IMPORTANT:
READ PRIOR TO STARTING THIS
EQUIPMENT
A.
UNPACKING
This shipment has been thoroughly checked,
packed and inspected before leaving our plant.
It was received in good condition by the
carrier and was so acknowledged.
1. Check for Visible Loss or Damage. If this
shipment shows evidence of loss or damage
at time of delivery to you, insist that a notation
of this loss or damage be made on the delivery
receipt by the carrier’s agent.
2. Check for Concealed Loss or Damage. When a
shipment has been delivered to you in
apparent good order, but concealed damage is
found upon unpacking, notify the carrier
immediately and insist on his agent inspecting
the shipment. Fifteen days from receipt of
shipment is the maximum time limit for
requesting such inspection. Concealed
damage claims are not our responsibility as
our terms are F.O.B. point of shipment.
B.
MOVING CAUTION:
Do not lift by piping. Use lifting lugs or fork lift.
1. Pressurized devices: This equipment is
a pressure containing device. Do not
exceed maximum operating pressure as
shown on equipment serial number tag.
Make sure equipment is depressurized
before working on or disassembling it
for service.
2. Electrical: This equipment requires
electricity to operate. Install equipment
in compliance with national and local
electrical codes. Standard equipment is
supplied with NEMA 4, 4x electrical
enclosures and is not intended for
installation in hazardous environments.
Disconnect power supply to equipment
when performing any electrical service
work.
3. Breathing Air: Air treated by this
equipment may not be suitable for
breathing without further purification.
Refer to OSHA standard 1910.134 for
the requirements for breathing quality
air.
GENERAL SAFETY
INFORMATION
MODEL RATED FLOW DESIGNATED AS MODELS
DH-25 25 SCFM 25
DH-45 45 SCFM 45
DH-6000 60 SCFM 60
DH-80 80 SCFM 80
DH-115 115 SCFM 115
DH-165 165 SCFM 165
DH-260 260 SCFM 260
DH-370 370 SCFM 370
DH-450 450 SCFM 450
DH-590 590 SCFM 590
DH-750 750 SCFM 750
DH-930 930 SCFM 930
DH-1130 1130 SCFM 1130
DH-1350 1350 SCFM 1350
DH-1550 1550 SCFM 1550
DH-2100 2100 SCFM 2100
DH-3000 3000 SCFM 3000
DH-4100 4100 SCFM 4100
DH-5400 5400 SCFM 5400
®
Instruction Manual
DH Series
SERVICE DEPARTMENT (724) 746-1100

Questions and Answers

  • H
    hhuynhAug 7, 2025
    Why does the moisture indicator turn yellow on my SPX FLOW Hankison DH-80?
    • X
      Xavier BrockAug 7, 2025
      If the moisture indicator on your SPX FLOW Dehumidifier turns yellow, indicating elevated outlet dew points, several factors could be at play. First, ensure that you are not exceeding the maximum flow. Also, verify that the dryer operates within its design limitations. If these aren't the issue, the desiccant may not be adsorbing properly, requiring a change. In some cases, desiccant beds may be reactivated by running at reduced flow until the desired outlet dewpoint is achieved.
  • P
    Patricia Delacruz DVMAug 12, 2025
    What to do if the tower fails to depressurize on SPX FLOW Hankison DH-80 Dehumidifier?
    • J
      James KlineAug 12, 2025
      If your SPX FLOW Dehumidifier tower fails to depressurize to less than 2 psig, it could be due to several reasons. The purge rate valve might be open too far, so you should check the purge rate indicator setting. Other possible causes include a faulty valve, which may need repair or replacement of the muffler. For Models 370 and larger, inspect the pilot valve, pilot air line, and purge repressurization valve for any obstructions.
  • M
    Michael SmithAug 17, 2025
    Why is excessive purge air discharged from SPX FLOW Dehumidifier?
    • F
      Francisco BradshawAug 17, 2025
      If excessive purge air is discharged during the purge cycle of your SPX FLOW Dehumidifier, it could be due to the inlet valve not closing properly or the check valve sticking. Check the power to the valve (pilot valve on Models 370 and larger) to determine if the valve or timer is at fault. Also, inspect the check valve for any obstruction. For Models 370 and larger, examine the pilot valve and pilot air line for obstructions.
  • C
    Cheryl LopezAug 22, 2025
    Why is desiccant being exhausted prematurely in my SPX FLOW Hankison DH-80 Dehumidifier?
    • R
      Robin HarrisonAug 22, 2025
      If the desiccant in your SPX FLOW Dehumidifier is being exhausted prematurely, it might be due to an insufficient purge rate. In this case, you should determine the correct Purge Pressure Indicator Setting. Other possible causes include the need to replace muffler inserts, or issues with the valve or timer. For Models 370 and larger, check the pilot air line for any obstructions.
  • P
    Paul PetersAug 28, 2025
    What causes the tower to fail to pressurize in SPX FLOW Dehumidifier?
    • M
      Mason JacksonAug 28, 2025
      If your SPX FLOW Dehumidifier tower fails to pressurize to line pressure, it could be due to the purge repressurization valve not closing, possibly because of an obstruction. Another reason could be excessive downstream air demand. On Models 25 thru 260, the purge repressurization valve is normally closed. On Models 370 and larger, check the pilot solenoid valve and pilot air line for obstruction.
  • E
    Edward SandersSep 1, 2025
    How to fix indicator lights not illuminated on SPX FLOW Dehumidifier?
    • I
      Ian CooleySep 1, 2025
      To address the issue of indicator lights not being illuminated on your SPX FLOW Dehumidifier, start by checking the voltage at the terminal board. Ensure the unit is turned on. If the lights still don't illuminate, consider replacing the switch.

Summary

General Safety Information

Pressurized Devices

Safety precautions for devices containing pressure.

Electrical Safety

Electrical safety requirements for equipment operation and service.

Installation and Initial Startup

Installation Guidelines

Steps for installing the unit on a level surface, temperature ranges, and connections.

Start Up Procedure

Steps for initial startup, including controller settings and pressurization.

Operational Checkpoints

Key checks during operation, including indicators and gauges.

Depressurization

Steps for safely depressurizing the dryer.

Dryer Description and Function

Dryer Functionality

Explains how dual tower regenerative desiccant dryers work.

Dryer Operation Details

Standard Dryer Operation

Detailed explanation of the drying and regeneration cycle for standard dryers.

Installation Site and Conditions

Electrical Connections and Power

Dryer Operation and Setup

Initial Startup Procedures

Detailed steps for starting the dryer, including controller settings.

Advanced Operation and Settings

Purge Rate Adjustment

How to correctly adjust the purge rate valve for optimal performance.

Operational Checks and Monitoring

System Monitoring and Shutdown

Performance Verification and Flow Calculations

Maintenance Procedures

Desiccant Replacement

Steps and frequency for replacing desiccant material.

Advanced Maintenance and Testing

Troubleshooting Guide

Indicator Light Issues

Addresses symptoms related to indicator lights not illuminating.

Moisture Indicator and Desiccant Issues

Troubleshooting elevated dew points and desiccant exhaustion.

Pressure and Flow Issues

Diagnosing problems with tower pressurization, depressurization, and purge flow.

Air Discharge and Dust Issues

Solutions for excessive purge air discharge and desiccant dust.

SPX FLOW Hankison DH-80 Specifications

General IconGeneral
BrandSPX FLOW
ModelHankison DH-80
CategoryDehumidifier
LanguageEnglish

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