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HANKISON HPRP 125 - 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

  • C
    Carla PerkinsAug 25, 2025
    What causes a high pressure drop across my HANKISON HPRP 125?
    • H
      hmayerAug 26, 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.
  • A
    ashley74Sep 1, 2025
    What does it mean if the dew point indicator is in the red area on my HANKISON HPRP 125 Dehumidifier?
    • S
      schneideranthonySep 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.
  • T
    Todd CrawfordNov 8, 2025
    What to do if there is water downstream of my HANKISON HPRP 125 Dehumidifier?
    • S
      sreidNov 8, 2025
      If you notice water downstream of your HANKISON Dehumidifier, several factors could be responsible. It might be due to residual free moisture in the pipelines; in this case, blow out the system with dry air. Check the valve positions because the air bypass system might be open. Ensure 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. Excessive free moisture at the dryer inlet might be the cause, so install a separator ahead of the dryer. Condensate drainage issues can also lead to this problem; ensure the drain mechanism isn't clogged or inoperative, the drain line isn't restricted or frozen, and, for electric drains, the timer is set for...
  • D
    Dale WalkerNov 16, 2025
    Why is my HANKISON Dehumidifier's refrigeration system not functioning properly?
    • C
      Carla MartinNov 16, 2025
      Several issues can cause the refrigeration system of your HANKISON Dehumidifier to malfunction. First, check if the power is on. If the power light is off, ensure the unit is receiving power. Verify that the line disconnect switch is closed and inspect for blown fuses or open breakers, checking for continuity. Faulty wiring or loose terminals can also be culprits, so have an electrician inspect the electrical connections. High or low ambient conditions might affect the system; check the minimum and maximum temperature ranges. If your system is air-cooled, inspect for dirty or clogged condenser fins and ensure there's no obstruction to airflow across the condenser. Also, check the fan motor or fan control switch. If the issue persists after cleaning the condenser and ensuring free airflow, ...

Summary

General Safety Information

Safety Precautions

Covers pressurized devices, electrical safety, and breathing air considerations.

1.0 Installation

Installation Location Requirements

Specifies site selection criteria, clearances, ambient conditions, and outdoor installation notes.

Piping Connections

Electrical Connections

2.0 Operation

Operating Conditions and Start-Up

Operational Checks and Monitoring

Troubleshooting Common Faults

Identifies common fault types like low pressure, high pressure, high temperature, and drain issues.

3.0 Maintenance

Scheduled Maintenance Tasks

Regular tasks like cleaning condenser coils, replacing filter elements, and checking drains.

Sizing

Dryer Sizing and Capacity Selection

Wiring Diagram: Models 100, 125, 150

Wiring Diagram: Models 200-600 (460 VAC)

Wiring Diagram: Model 750 (460 VAC)

Electrical Schematics

Dimensions; Weights

Troubleshooting Guide (Models 100-150)

Dew Point and Refrigeration Faults

Troubleshooting dew point indicators and refrigeration system malfunctions.

Troubleshooting Guide (Models 200-750)

Water Issues and Pressure Drop

Diagnosing and resolving problems related to water downstream and high pressure drop.

System Faults and Alarms

Troubleshooting specific faults like power, compressor status, and various alarm conditions.

HANKISON HPRP 125 Specifications

General IconGeneral
BrandHANKISON
ModelHPRP 125
CategoryDehumidifier
LanguageEnglish

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