Pneumatech EE Series - User Manual

Questions and Answers

A
Anna LyonsAug 15, 2025
Why is the dewpoint elevated in my Pneumatech Dryer?
- A
  Angela MyersAug 15, 2025
  An elevated dewpoint in your Pneumatech Dryer can occur due to several reasons: low purge flow (reset purge pressure at the recommended pressure), low inlet pressure (recalculate purge pressure setting from the chart), excess moisture carryover (check prefilter element and drains at the prefilter and afterfilter), high inlet temperature (check aftercooler operation), excess air/gas inlet flow (check total output of compressors), desiccant coated with oil (depressurize dryer and inspect desiccant), dewpoint monitor out of calibration (recalibrate probe).
J
Jennifer LynchAug 18, 2025
What to do if there is high pressure drop in Pneumatech Dryer?
- J
  Julie CampbellAug 18, 2025
  A high pressure drop in your Pneumatech Dryer may be due to: plugged desiccant retainer screens (replace desiccant retainer screens), excess flow (check inlet flow conditions), high purge flow (check and reset purge pressure), or the purge valve staying open (check repressurizing solenoid valve, repair or replace if necessary, and check the timer).
H
hcrawfordAug 21, 2025
What to do if Pneumatech EE Dryer regeneration temperature is low?
- D
  Daniel OsbornAug 21, 2025
  If the regeneration temperature is low (normal 250°F) in your Pneumatech Dryer, it could be due to: a faulty thermostat or one set too low (reset or replace if necessary), heater burnout (check and replace if necessary), a faulty contactor (replace heater contactor), or no power (check for continuity).
A
Amy MeyerAug 25, 2025
What causes excessive flow through mufflers in Pneumatech Dryer?
- B
  Brian FergusonAug 25, 2025
  Excessive flow through the mufflers in your Pneumatech Dryer can be caused by leaking check valves (repair or replace faulty check valves), a purge valve that stays open (check purge solenoid and valve; repair or replace if faulty), or a repressurizing valve that does not close (check repressurizing solenoid and valve; repair or replace if faulty), or diaphragms ruptured in valves (EE models) - replace diaphragms.
S
Scott RiosAug 27, 2025
Why is there high back pressure on the regenerating tower of my Pneumatech EE?
- B
  Brian ColeAug 27, 2025
  High back pressure on the regenerating tower of your Pneumatech Dryer may be caused by: a plugged muffler (replace mufflers), leaking check valves (repair or replace faulty check valves), excess purge flow (check and reset the purge pressure), restricted purge exhaust piping (remove obstruction or replace with larger size pipe), purge set too high (check purge calibration, plot and reset), or ruptured diaphragms in valves (EE models) - replace diaphragms.
C
Christopher BryanAug 30, 2025
What to do if Pneumatech Dryer fails to purge?
- V
  Vickie HillAug 30, 2025
  If your Pneumatech Dryer fails to purge, it could be due to: a plugged orifice plate (clean the orifice plate), a purge valve that fails to open, a closed purge valve (reset proper purge pressure), or a blocked purge check valve (inspect and replace if necessary).
J
Julie WilsonSep 2, 2025
What causes a Pneumatech Dryer tower to fail to pressurize?
- B
  Benjamin GarnerSep 2, 2025
  A tower failing to pressurize in your Pneumatech Dryer can be caused by: a purge valve that stays open or ruptured diaphragms in valves (EE models). If the diaphragms are ruptured, replace them.
R
Rachael LiuSep 5, 2025
What to do if failure to switch alarm light in Pneumatech EE Dryer?
- R
  Richard HallSep 5, 2025
  If the alarm light fails to switch on your Pneumatech Dryer, it may be due to: inlet valves that did not switch (check pilot air solenoid valve and repair if necessary), a faulty timer (replace timer), insufficient pilot air pressure (clean or replace pilot filter element), or a cylinder leaking or seized up (repair or replace pilot air cylinder).
A
Amy JohnsonSep 8, 2025
What to do if no gas flow through the Pneumatech Dryer?
- A
  Amanda CarlsonSep 8, 2025
  If there is no gas flow through your Pneumatech Dryer, it could be because both inlet valves are closed due to low inlet pressure. To resolve this, manually open the inlet valve by turning the shaft or the ON actuator.
C
cjordanSep 12, 2025
What to do if moisture indicator color turned pink in Pneumatech EE Dryer?
- B
  Brianna GatesSep 12, 2025
  If the moisture indicator color has turned pink (wet conditions) in your Pneumatech Dryer, open the bleed valve to allow a small amount of air to constantly flow through the gel.

Summary

General Information

Safety Instructions

Basic safety rules and precautions for using air compressors and accessories.

Desiccant Replacement Procedures

Filling Procedure

Step-by-step guide for filling the dryer with desiccant.

Draining Procedure

Methods for removing desiccant from the dryer.

PE & EE Series Installation & Operation

General Installation (PE & EE Series)

Installation guidelines for PE & EE series dryers.

Start-Up Procedure (PE & EE Series)

Steps for starting up the PE & EE series dryers.

Adjustments & Settings

Standard Settings

Adjusting various settings like purge pressure and thermostats.

PPR Settings

Specific settings for Pulse Purge Regeneration models.

DMP Microprocessor Control

Sequence of Operation (DMP)

Explanation of the DMP controller's operational sequence.

Optional Controls & Alarms

Dewpoint Demand Sequence Control

How the dewpoint demand mode functions.

Shutdown Procedure

With Bypass System

Shutdown steps when a bypass system is installed.

Without Bypass System

Shutdown steps when no bypass system is present.

PB Series Installation & Operation

General Installation (PB Series)

General installation guidelines for PB series dryers.

Start-Up Procedure (PB Series)

Steps for starting up the PB series dryers.

PB Series Adjustments & Settings

Dryer Shutdown Procedure

Maintenance

PE & EE Series Maintenance

General Maintenance (PE & EE)

General maintenance tasks for PE & EE series dryers.

Weekly Maintenance (PE & EE)

Dewpoint Sensor Maintenance (PE & EE)

PB Series Maintenance

General Maintenance (PB)

Weekly Maintenance (PB)

Dewpoint Sensor Maintenance (PB)

Dewpoint Display Key Functions

Options Listing with Explanation

Failure to Shift Alarm

Heater Failure Alarm

High Humidity Alarm

Alarm triggered by high dewpoint at the dryer outlet.

Over;Hi Temperature Alarm

PLC Controller

Dewpoint Demand Control DPD

Pulse Purge Regeneration (PPR) with Dewpoint Demand (DPD)

Troubleshooting

Pneumatech EE Series Specifications

General

Operating Pressure	40 to 232 psig (2.8 to 16 bar)
Type	Refrigerated
Refrigerant	R134a
Ambient Temperature	Up to 122°F (50°C)
Construction	Powder-coated steel

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