HANKISON HPRP 300 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:

K
Kimberly ScottAug 7, 2025
Why is there water downstream of my HANKISON Dehumidifier?
- B
  Bryan SandovalAug 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.
M
marquezmatthewAug 27, 2025
What causes a high pressure drop across my HANKISON Dehumidifier?
- K
  Kyle PetersonAug 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.
N
Nicholas AustinSep 1, 2025
What does it mean if the dew point indicator is in the red area on my HANKISON Dehumidifier?
- M
  Meredith StewartSep 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 300 Specifications

General

Brand	HANKISON
Model	HPRP 300
Category	Dehumidifier
Language	English

Summary

General Safety Information

Pressurized Device Safety

Safety guidelines for devices operating under pressure.

Electrical Safety Requirements

Mandatory electrical safety precautions for operation.

Installation

Location Selection

Mounting the Dryer

Piping Connections

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

Electrical Connections

Guidelines for making secure and correct electrical connections.

Operation

Operating Condition Limits

Dryer Start-Up Procedures

Step-by-step guide for initiating dryer operation.

Program Monitor and Settings

Manual Operation Mode

Detailed Dryer Startup Steps

Comprehensive steps for starting the dryer.

Control Panel Overview and Functions

Description of control panel indicators and buttons.

Operational Checkpoints

Key operational checks to perform during startup and run.

Maintenance

Condenser Coil Maintenance

Moisture Separator Maintenance

Sizing and Selection

Engineering Data: Models 100-250

Engineering Data: Models 300-750

Air System Performance

Refrigeration System Specs

Wiring Diagrams

Models 100, 125 & 150 Wiring

Electrical wiring diagrams for models 100, 125, and 150.

Models 200-600 (460 VAC) Wiring

Electrical wiring diagrams for models 200-600 at 460 VAC.

Model 750 (460 VAC) Wiring

Electrical wiring diagram for model 750 at 460 VAC.

Troubleshooting: Models 100-150

Dew Point Indicator Issues

Refrigeration System Faults

Troubleshooting: Models 200-750

Water Downstream Troubleshooting

High Pressure Drop Troubleshooting

Checkpoint Fault Diagnosis

Troubleshooting various operational checkpoint faults.

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