Ingersoll-Rand HL500 User Manual

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HL SERIES DESICCANT DRYER

MODELS 90-5000

OPERATORS MANUAL

C.C.N. : 80442833 en

DATE : APRIL 2010

REV. : D

Ensure that the operator reads and understands the decals

and consults the manuals before maintenance or operation.

Ensure that the Operation and Maintenance manual is not

removed permanently from the machine.

Ensure that maintenance personnel are adequately trained,

competent and have read the Maintenance Manuals.



PRINT LANGUAGE

ENGLISH

FRENCH

PORTUGUESES

SPANISH

Table of Contents

Questions and Answers:

K
Kenneth RobertsAug 14, 2025
What to do if Ingersoll-Rand Dryer has elevated dew point?
- M
  Michael EspinozaAug 15, 2025
  If your Ingersoll-Rand Dryer has an elevated dew point, several factors could be the cause. First, check the purge flow settings to ensure they are sufficient. Also, inspect the purge piping for any obstructions and clean the purge piping and muffler. Verify that the inlet air pressure meets the design conditions and check the system for leaks. Ensure the flow rate is within the design specifications and address any increased demand. If the inlet temperature exceeds the design condition (120°F), inspect and service the aftercooler. Also, check the air/moisture separator and pre-filter for entrained water and replace the dryer desiccant if needed. Finally, if the desiccant is contaminated by oil, install a suitable pre-filter and replace the dryer desiccant.
E
ernestbruceAug 18, 2025
Why Ingersoll-Rand Dryer fails to shift?
- P
  Paula SmithAug 18, 2025
  If your Ingersoll-Rand Dryer fails to shift, it could be due to several reasons. First, check the power input to ensure there is power. Next, inspect the no-loss drain valve for any defects. Also, check the pilot air line and ensure that the control air line filter is clean. Finally, examine the pilot-operated diaphragm valve seals and replace them if necessary.
A
Amanda MooneyAug 21, 2025
What to do if Ingersoll-Rand Dryer has excessive pressure drop?
- A
  Amber FitzgeraldAug 21, 2025
  If your Ingersoll-Rand Dryer experiences an excessive pressure drop, it could be due to excessive flowrate, so check the flow rate and cause for increased air demand. It could also be caused by the inlet pressure being below the design condition, in which case you should check the pressure source.
D
Daniel PayneAug 25, 2025
What to do if my Ingersoll-Rand Dryer fails to pressurize?
- H
  Heather AndersonAug 25, 2025
  If your Ingersoll-Rand Dryer fails to pressurize, check that the repressurization circuit is sending a control signal to the purge valve. Also, inspect the purge valve and its no-loss drain valve.
W
whitestacyAug 28, 2025
What to do if Ingersoll-Rand Dryer depressurizes too rapidly?
- K
  katie66Aug 28, 2025
  If your Ingersoll-Rand Dryer depressurizes too rapidly, it may be because the purge valve does not close, causing the dryer to repressurize through the inlet valve. Check the purge valve and its no-loss drain valve.
A
amanda03Aug 31, 2025
What to do if the Blue Moisture Indicator (BMI) indicates high moisture level in Ingersoll-Rand Dryer?
- D
  Dwayne AdamsAug 31, 2025
  If the Blue Moisture Indicator (BMI) in your Ingersoll-Rand Dryer indicates a high moisture level, it could be due to an elevated dew point. Refer to the corrective actions for 'Elevated Dew Point'. Also, if the BMI is wet, it may take a week or more of continuous use for it to switch back to its blue (dry) state, depending on the degree of saturation of the desiccant.
K
Kristen GoldenSep 3, 2025
How to fix Ingersoll-Rand Dryer that fails to purge?
- T
  Timothy HughesSep 4, 2025
  If your Ingersoll-Rand Dryer fails to purge, it may be because the purge valve does not open or is stuck in the closed position. Check the purge valve and its no-loss drain valve, and repair or replace them if necessary. Also, check that the repressurization circuit is sending a control signal.
C
Christopher LoweSep 6, 2025
What causes excessive back pressure in regenerating tower of Ingersoll-Rand Dryer?
- G
  Gabriela Sampson MDSep 7, 2025
  Excessive back pressure in the regenerating tower of your Ingersoll-Rand Dryer (above 5 psig) could be due to a dirty purge muffler that does not pass air; replace it. It may also be caused by the purge muffler passing too much air because air is leaking across the valve; check the inlet valve and outlet check valves, and verify the inlet valve is closed to the purging tower (0 psig tower).
K
Kimberly BoyerSep 10, 2025
What causes excessively high pressure at the purge gauge on the right tower of Ingersoll-Rand Dryer?
- V
  Virginia BrownSep 10, 2025
  If there is excessively high pressure at the purge gauge on the right tower of your Ingersoll-Rand Dryer, it could be due to improper calibration. Reset it when the right tower is online.

Ingersoll-Rand HL500 Specifications

General

Brand	Ingersoll-Rand
Model	HL500
Category	Dryer
Language	English

Summary

Safety and Operation Precautions

Safety Alerts

Includes WARNING, CAUTION, and NOTICE descriptions for hazardous situations and policies.

Principles of Operation

Controls

Microprocessor Control Display Parameters

Alarms and Their Functions

Details various alarms like Fail to Shift and High Dew Point, and their functions.

Alarms and Indicators

Energy Management System (EMS) - (Optional)

High Dew Point Alarm (Included with EMS)

Installation and Initial Start-Up

Filtration

Emphasizes the importance of pre-filters and post-filters for dryer performance and warranty.

Electrical Connection

Details electrical connection requirements, including grounding and fusing.

Start-Up

Step-by-step guide for pressurizing the dryer, checking for leaks, and initiating operation.

Technician Mode

Dew Point Adjuster (-40°F Dryers Only)

Energy Management System (Optional)

Maintenance and System Check

Scheduled Maintenance

Lists daily, semi-annual, and annual maintenance functions for proper dryer upkeep.

Pre-filters and Post-filters

Desiccant Changeout Procedure

Troubleshooting

Elevated Dew Point

Lists probable causes like insufficient purge rate and corrective actions.

Failure to Shift (Switching Failure)

Troubleshooting for valve switching failures, including no input power or defective drain valves.

Dryer Fails to Pressurize

Addresses causes like no pilot air or faulty purge valves and their respective fixes.

Excessive Back Pressure in Regenerating Tower

Addresses causes like dirty purge mufflers or inlet/outlet check valve issues.

Purge Charts

Wiring Diagram

Flow Diagram

Replacement Parts

Valves

Engineering Specifications

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