Ingersoll-Rand EH 200 User Manual

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EH Series Desiccant Dryer

Models 150-8000

Operator’s Manual

Manual Del Operador

ES

Manual do Operador

PT

Manuel De L’opérateur

FR

Operator’s Manual

EN

December 2013

PRINT LANGUAGE

ENGLISH

FRENCH

PORTUGUESES

SPANISH

Table of Contents

Questions and Answers:

G
garciastephenAug 13, 2025
Why does my Ingersoll-Rand EH 200 have an elevated dew point?
- G
  Garrett AllenAug 13, 2025
  If your Ingersoll-Rand Dryer has an elevated dew point, several factors could be the cause. It might be due to an insufficient purge rate, so you should check the purge flow settings and piping for obstructions, cleaning them as necessary. Low inlet air pressure could also be the culprit, so verify the pressure source. Other potential causes include a flow rate higher than the design condition (check the flow rate), an inlet temperature exceeding the design condition (inspect and service the aftercooler), water entering the desiccant bed (check the air/moisture separator and pre-filter, replacing the desiccant if needed), or desiccant contaminated by oil (install a pre-filter and replace the desiccant).
J
Jose MartinAug 16, 2025
What to do if Ingersoll-Rand EH 200 Dryer fails to shift?
- D
  David Mcpherson MDAug 17, 2025
  If your Ingersoll-Rand Dryer fails to shift, begin by checking the power input. If that's not the issue, inspect the no-loss drain valve, pilot air line, control air line filter, and regulator setpoint. Also, check the pressure switch, ensuring it opens above 65 psig and closes below 40 psig.
D
David BrownAug 20, 2025
Why is there excessive pressure drop in my Ingersoll-Rand EH 200 Dryer?
- W
  Wanda PriceAug 20, 2025
  An excessive pressure drop in your Ingersoll-Rand Dryer can be caused by an excessive flow rate. In this case, check the flow rate and determine the cause for the increased air demand. Also, check the pressure source, because the inlet pressure may be below the design condition.
Q
qhernandezAug 25, 2025
How to fix Heater High Temp. Alarm (Heater runs continuously) in Ingersoll-Rand EH 200?
- O
  omoonAug 25, 2025
  If your Ingersoll-Rand Dryer's heater is running continuously and triggering a high-temperature alarm, the contactor might be stuck closed, in which case you should replace it. Other potential causes include a defective thermocouple or temperature control, which would also require replacement.
J
Jenna AlexanderAug 27, 2025
What to do if Ingersoll-Rand EH 200 fails to pressurize?
- K
  Kim McfarlandAug 27, 2025
  If your Ingersoll-Rand Dryer fails to pressurize, you should check the purge valve and its no-loss drain valve. Also, ensure that the repressurization circuit is sending a control signal.
S
Shannon JacksonAug 31, 2025
What to do if Ingersoll-Rand Dryer fails to depressurize?
- B
  Bobby BakerAug 31, 2025
  If your Ingersoll-Rand Dryer fails to depressurize, it could be due to the purge valve not opening or being stuck in the closed position. Check the no-loss drain valve, and repair or replace it if necessary.
W
Wayne GarciaSep 4, 2025
Why is there excessive back pressure in regenerating tower in my Ingersoll-Rand Dryer?
- D
  ddelgadoSep 4, 2025
  Excessive back pressure in the regenerating tower (above 5 PSIG) in your Ingersoll-Rand Dryer can be caused by air leaking across the valve. Check the inlet valve and verify that it is closed to the purging tower (0 PSIG tower).
A
Andrew ChenSep 8, 2025
What causes excessively high pressure at the purge gage in Ingersoll-Rand EH 200 Dryer?
- J
  John YoungSep 8, 2025
  If the pressure at the purge gauge is excessively high in your Ingersoll-Rand Dryer, it may be due to improper calibration. Check the gauge against tower gauges when in switching sequence, and replace the gauge as required.

Ingersoll-Rand EH 200 Specifications

General

Airflow Capacity	200 CFM
Maximum Inlet Temperature	120 °F
Maximum Working Pressure	150 PSIG
Maximum Pressure	150 psig
Inlet Temperature	120°F
Type	Refrigerated
Capacity	200 CFM

Summary

Warranty Information

Safety and Operation Precautions

Principles of Operation

Introduction to Operation

Overview of water vapor removal using two desiccant towers.

Drying Cycle

Process of wet air passing through the desiccant for drying.

Regeneration Cycle

Process of removing adsorbed moisture from desiccant.

Heated Purge Regeneration

Dryer operation using heated purge air for regeneration.

Heatless Pressure Swing Regeneration

Dryer operation using compressed air for regeneration.

Control System Overview

Microprocessor Control User Interface

Status Panel User Interface

Timing Sequence

Alarms and Indicators

Heater High Temperature Alarm

Alarm for high heater temperature with safety interlock.

Heater Failure Alarm

Alarm triggered if the heater fails to generate heat.

Failure to Shift Alarm

Alarm indicating a problem with dryer sequencing functions.

Failure to Repressurize

Failure to repressurize the tower to line pressure.

Failure to Depressurize

Failure to depressurize the regenerating tower to atmospheric pressure.

High Dew Point Alarm (with EMS)

Alarm for failing to supply air at the designed pressure dew point.

Energy Management System (EMS)

Energy savings feature matching moisture loading and regeneration energy.

High Outlet Temperature Alarm

Alarm for high dryer discharge air temperature.

Technician Mode

Entering Technician Mode

Operating Mode (Bi-Mode)

Heater Temperature Setpoint

Energy Management System (Optional)

Overview of the EMS feature and its benefits.

Enabling/Disabling EMS

EMS Setpoint Adjustment

High Dew Point Alarm (Optional)

Alarm for exceeding the specified dew point setpoint.

High Dew Point Alarm Description

High Dew Point Setpoint Adjustment

Shutdown Sequence Procedure

Installation and Initial Start-Up

Equipment Application Guidelines

Locating and Mounting

Piping Requirements

Filtration Requirements

Electrical Connection

Dryer Start-Up Procedure

Procedure for initial dryer start-up.

Shut Down Procedures

Procedures to properly shut down the dryer to avoid damage.

Maintenance and System Check

Scheduled Maintenance

Routine maintenance tasks for optimal dryer performance.

Pre-Filters and Post-Filters

Desiccant Changeout Procedure

Troubleshooting Guide

Wiring Diagram

Flow Diagram

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