SPX HANKISON HES Series

Questions and Answers

H
haleygonzalezAug 5, 2025
What to do if my SPX HANKISON HES refrigeration system is not functioning properly?
- T
  Terri DuncanAug 5, 2025
  If the refrigeration system isn't working, here's what you can check: * Ensure the unit has power. * Verify the line disconnect switch is closed. * Check for blown fuses or open breakers and ensure electrical continuity. * Have an electrician inspect for faulty wiring or loose terminals. * Confirm the dryer on/off switch is in the 'on' position. * If air-cooled, clean the condenser face. If water-cooled, clean the water strainer. * Check and replace the fan motor or fan pressure switch if faulty. * Ensure sufficient water pressure, especially during high water flow demand. * Check, adjust, or replace the water regulating valve if it's mis-adjusted or defective.
S
smithivanAug 15, 2025
Why is there water downstream of my SPX Dehumidifier?
- F
  Frank DavisAug 15, 2025
  If you're finding water downstream of the dehumidifier, here are some potential causes and solutions: * Residual moisture in the pipelines: Blow out the system with dry air. * Open air bypass system: Check the valve positions. * Reversed inlet and outlet connections: Verify the correct connection. * Air lines exposed to low temperatures: Insulate or heat trace air lines. * Excessive moisture at the inlet: Install a separator ahead of the dryer. * Glycol pump not operating: Replace pump cartridge and check for power.
M
Michael MathewsAug 23, 2025
How to fix high pressure drop across SPX HANKISON HES?
- R
  robin00Aug 23, 2025
  A high-pressure drop across the dehumidifier can be caused by: * Excessive airflow: Check the flow rate. * Filter loaded with solid particulates: Replace the filter element.

Summary

General Safety Information

Pressurized Devices Safety

Safety precautions for equipment containing pressure.

Electrical Safety Precautions

Guidelines for safe electrical operation and servicing.

Breathing Air Quality

Information on air suitability for breathing after treatment.

Receiving, Moving, and Unpacking

Receiving and Inspecting Shipment

Procedures for checking delivered shipments for damage or loss.

Unpacking and Concealed Damage

Steps for unpacking and reporting hidden damage.

Moving and Transporting Dryer

Guidelines on proper methods for moving the dryer.

Storage and Shutdown Procedures

Recommendations for storing and shutting down the dryer safely.

Installation Procedures

Location and Placement

Guidance on selecting an appropriate location for dryer installation.

Clearances and Airflow Requirements

Specifies necessary clearances for proper dryer operation and airflow.

Ambient Operating Conditions

Defines the standard ambient temperature ranges for unit operation.

Flexible Connection Recommendation

Suggests using a flexible connection to prevent vibration damage.

Mounting the Dryer

Instructions for securely mounting the dryer unit on a level surface.

Piping Connections

Details on connecting air inlet, outlet, and bypass piping.

Electrical Connections

Guidelines for making safe and correct electrical connections.

Moisture Separator Operation

Information on the moisture separator and its drain mechanism.

EDD Operation

Explanation of the Electronic Demand Drain (EDD) functionality.

Dryer Operation

Minimum;Maximum Operating Conditions

Specifies the operational limits for inlet air pressure and temperature.

Start-up Procedures (Standard Controller)

Step-by-step guide for starting the dryer with a standard controller.

Start-up Procedures (Advanced Controller)

Step-by-step guide for starting the dryer with an advanced controller.

Control Panel Functions

Control Panel Overview

Description of the control panel elements and their functions.

Control Panel Button Operations

Explains the operation of various buttons on the control panel.

Dryer Display and Alarms

Dryer Display Information

Details on the information displayed on the dryer's screen.

Dryer Alarm Codes

Lists and describes common dryer alarm conditions and their meanings.

RS-232 Port Communication

RS-232 Port Usage

Instructions for using the RS-232 port for dryer monitoring and data exchange.

Maintenance and Sizing

Maintenance Schedule and Procedures

Routine tasks for maintaining the dryer's optimal performance.

Dryer Sizing and Capacity

Guidance on determining the correct dryer capacity for specific applications.

Engineering Data (Models 90-240)

Engineering Data (Models 280-675)

Technical specifications and operating data for models 280 through 675.

Wiring Diagrams - Standard Controller

Models 90;120;140: 115;1;60

Electrical schematic for standard controller models 90-140 at 115V.

Models 90;120;140: 230;1;60

Electrical schematic for standard controller models 90-140 at 230V.

Models 190-540 (Sheet 1)

First part of the electrical diagram for standard controller models 190-540.

Models 190-540 (Sheet 2)

Second part of the electrical diagram for standard controller models 190-540.

Model 675 (Sheet 1)

First part of the electrical diagram for standard controller model 675.

Model 675 (Sheet 2)

Second part of the electrical diagram for standard controller model 675.

Wiring Diagrams - Advanced Controller

Models 190-540, 460 VAC (Sheet 1)

First part of the electrical diagram for advanced controller models 190-540.

Models 190-540, 460 VAC (Sheet 2)

Second part of the electrical diagram for advanced controller models 190-540.

Model 675, 460 VAC (Sheet 1)

First part of the electrical diagram for advanced controller model 675.

Model 675, 460 VAC (Sheet 2)

Second part of the electrical diagram for advanced controller model 675.

Wiring Diagram - Transformer Pack

Models 190-675, 575-460;3;60 Transformer Pack

Electrical schematic for the transformer pack used with specific models.

Dimensions and Weights

Front View Dimensions

Frontal dimensions and connection points of the dryer unit.

Right Side View Dimensions

Side view dimensions and connection points of the dryer unit.

Bottom View Dimensions

Bottom view dimensions and mounting hole details.

Troubleshooting Guide

Troubleshooting Guide (Standard Controller)

Guide to diagnosing and resolving common issues for standard controllers.

Water Downstream of Dryer

Identifies causes and solutions for water in downstream pipelines.

High Pressure Drop

Addresses issues related to increased pressure drop across the dryer.

Dew Point Indicator Issues

Explains problems indicated by the dew point indicator and their fixes.

Refrigeration System Not Functioning (Standard)

Troubleshooting steps for a non-functional refrigeration system.

Troubleshooting Guide (Advanced Controller)

Guide to diagnosing and resolving common issues for advanced controllers.

Checkpoint Faults

Lists and explains specific fault indicators on the advanced controller.

High Temperature Faults

Troubleshooting for high temperature warnings and related causes.

Drain System Faults

Identifies issues with the drain mechanism or lines.

Compressor and Heater Faults

Diagnoses problems related to the compressor and heater components.

Temperature Sensor Faults

Addresses issues with the temperature sensor or its wiring.

Parts List

Maintenance Kits

Identifies available maintenance kits for different dryer models.

Notes

Document Notes

General notes and disclaimers related to the manual's content.

Warranty Information

Warranty Period Details

Specifies the duration and coverage of the product warranty.

Service Department Authorization

Requirement for service department authorization for returns and repairs.

SPX HANKISON HES Series Specifications

General

Model	HES Series
Desiccant	Activated Alumina
Dimensions	Varies by model
Weight	Varies by model
Application	Industrial
Type	Desiccant Air Dryer
Pressure Dew Point	-40°F to -100°F
Inlet Pressure Range	60 - 150 psig
Inlet Temperature Range	Up to 120°F (49°C)
Operating Temperature	35 to 120 °F (2 to 49 °C)
Purge Air Requirement	15% of rated capacity
Airflow Capacity	20 to 3000 SCFM (depending on model)