HANKISON HPRP 250 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:

M
Morgan RobersonAug 7, 2025
Why is there water downstream of my HANKISON Dehumidifier?
- J
  Julian EricksonAug 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
cynthia71Aug 27, 2025
What causes a high pressure drop across my HANKISON Dehumidifier?
- T
  tina44Aug 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.
K
Kristen ValentineSep 1, 2025
What does it mean if the dew point indicator is in the red area on my HANKISON HPRP 250?
- Z
  Zachary EstradaSep 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 250 Specifications

General

Brand	HANKISON
Model	HPRP 250
Category	Dehumidifier
Language	English

Summary

General Safety Information

Pressurized Devices Safety

Safety for pressure containment.

Electrical Safety Requirements

Requirements for electrical connections.

Installation

Location Requirements

Optimal placement for the dryer.

Clearances and Airflow

Required space around the unit.

Ambient Operating Conditions

Temperature limits for operation.

Mounting Instructions

Air Inlet and Outlet Piping

Electrical Connection Requirements

Moisture Separator Operation

Operation

Operating Condition Limits

Minimum and maximum parameters.

Dryer Start-up Procedures

Initial power-up steps.

Program Monitor Navigation

Using the control interface.

Setting Date, Time, and Schedule

Configuring operational timing.

Manual vs. Schedule Operation

Control modes explained.

Dryer Start-up Sequence

Step-by-step startup.

Control Panel Overview

Operating Checkpoints

Verifying correct function.

Fault Indicators and Types

Understanding alarms and errors.

Maintenance

Condenser Coil Cleaning

Moisture Separator Maintenance

Drain Mechanism Service

Engineering Data

Models 100-250 Specifications

Models 300-750 Specifications

Wiring Diagrams

Models 100, 125 & 150 Diagrams

Models 200-600 - 460 VAC Diagrams

Model 750 - 460 VAC Diagrams

Troubleshooting Guide

Models 100-150 Troubleshooting

Solutions for common issues on models 100-150.

Models 200-750 Troubleshooting

Solutions for common issues on models 200-750.

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