HANKISON HPRP 500 User Manual

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REFRIGERATED

TYPE

COMPRESSED

AIR DRYERS

CONTENTS

GENERAL SAFETY INFORMATION .........................2

RECEIVING, MOVING, AND UNPACKING ................2

1.0 INSTALLATION ..................................................3

2.0 OPERATION.......................................................5

3.0 MAINTENANCE .................................................8

SIZING ......................................................................8

ENGINEERING DATA (Models 100-250)...................9

ENGINEERING DATA (Models 300-750)...................10

WIRING DIAGRAM (Models 100, 125 & 150) ...........11

WIRING DIAGRAM (Models 200-600 - 460 VAC) .....12

WIRING DIAGRAM (Model 750 - 460 VAC) .............. 13

DIMENSIONS / WEIGHTS ........................................ 14

TROUBLESHOOTING GUIDE (Models 100-150) .....15

TROUBLESHOOTING GUIDE (Models 200-750) .....16

PARTS LIST ..............................................................17

WARRANTY..............................................................20

INSTRUCTION MANUAL

HPRplus Series with ColdWave™ Technology

Models: HPRP 100, 125, 150, 200, 250, 300,

400, 500, 600, 750

5002730 Rev. A 5/06

18-2-675 5th Edition

Internal Use Only

060519

SERVICE DEPARTMENT: (724) 746-1100

Table of Contents

Questions and Answers:

E
Erik GonzalesAug 7, 2025
Why is there water downstream of my HANKISON Dehumidifier?
- S
  Steven LewisAug 7, 2025
  If you find water downstream of your HANKISON Dehumidifier, it could be due to several reasons. Residual free moisture might be present in the downstream pipelines, in which case you should blow out the system with dry air. Also, check the valve positions to ensure the air bypass system isn't open. Verify that the inlet and outlet connections are correctly connected. If air lines downstream are exposed to temperatures below the dew point, insulate or heat trace them, or use dry air to lower the dew point. If there's excessive free moisture at the dryer inlet, install a separator ahead of the dryer. If the condensate is not being drained, or the dryer is overloaded, or the refrigeration system isn't functioning, see section C for more details.
C
Christopher MuellerAug 28, 2025
What causes a high pressure drop across my HANKISON HPRP 500 Dehumidifier?
- M
  Maria MillerAug 28, 2025
  A high pressure drop across your HANKISON Dehumidifier can stem from a few potential issues. Excessive airflow could be the cause, so check the flow rate. Another possibility is the freezing of moisture in the evaporator due to a refrigeration system fault; in this case, consult section D. Lastly, a clogged separator filter element can lead to a pressure drop, so replace the filter element.
J
Jennifer LawsonSep 1, 2025
What does it mean if the dew point indicator is in the red area on my HANKISON HPRP 500 Dehumidifier?
- A
  aaron46Sep 1, 2025
  If the dew point indicator on your HANKISON Dehumidifier is in the red area, this suggests that the dryer is overloaded, leading to a high air outlet temperature. Refer to section A 7. Alternatively, the refrigeration system might not be functioning properly, also resulting in a high air outlet temperature; in this case, consult section D.

HANKISON HPRP 500 Specifications

General

Brand	HANKISON
Model	HPRP 500
Category	Dehumidifier
Language	English

Summary

General Safety Information

Pressurized and Electrical Safety

Safety precautions for pressurized devices and electrical systems.

Installation Guide

Location Requirements

Specifies placement, clearances, ambient conditions, and installation notes.

Mounting and Connections

Instructions for mounting, piping, and electrical connections.

Moisture Separator and Drains

Operating Procedures

Operating Conditions and Startup

Defines minimum/maximum limits and covers initial dryer startup procedures.

Control Panel and Scheduling

Explains the control panel, programming options, and schedule functions.

Operation Checks and Fault Diagnosis

Covers operational checks, identifying faults, and using the RS-232 port.

Maintenance Schedule

Condenser Coil Cleaning

Moisture Separator Filter Replacement

Sizing Guide

Determining Dryer Capacity

Wiring Diagrams

Models 100, 125 & 150

Models 200-600 (460 VAC)

Model 750 (460 VAC)

Troubleshooting: Models 100-150

Dew Point Indicator Issues

Refrigeration System Faults

Troubleshooting for compressor cycling, power, and system faults.

Troubleshooting: Models 200-750

Water Downstream Issues

High Pressure Drop

Checkpoint Faults

Troubleshooting for power, compressor, alarm, and specific fault conditions.

Component Specific Faults

Diagnosing issues related to drain, compressor, heater, and temperature sensors.

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