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Sullair SD-600 - User Manual

Sullair SD-600
44 pages
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SD-220 / SD-600
DDS OPTION
3V OPTION
SD Heatless Desiccant
Compressed Air Dryers
REF: 02250130-734
SERIES SD

Table of Contents

Questions and Answers

  • T
    Tamara SmithAug 17, 2025
    What to do if the dryer does not switch towers in Sullair SD-600?
    • B
      Bryan SanchezAug 17, 2025
      If your Sullair Dehumidifier's dryer isn't switching towers, several factors could be at play. The inlet valve combination might not be opening or switching; in this case, check the electrical functioning of the solenoids and replace either the solenoid or the complete valve combination. Another reason could be that the PLC isn't functioning; check the PLC and the fuse in the control cabinet. The vessel might not be pressurized; check whether the blow-off valves are dirty and replace them if necessary, and check the electrical functioning of the solenoids, replacing either the solenoid or the complete valve combination. The regeneration orifice might be obstructed; clean or replace it.
  • S
    Sara FarrellAug 25, 2025
    How to fix high back pressure during regeneration phase in Sullair SD-600?
    • L
      Lindsay CooleyAug 26, 2025
      High back pressure during the regeneration phase in your Sullair Dehumidifier can stem from a few issues. The silencer might be blocked; clean or replace it. The inlet/exhaust valve cylinders could be defective; lubricate the cylinder, replace seals if necessary, or replace the cylinder. Also, the check valves might not be sealing; repair the check valve.
  • K
    Kenneth MathewsNov 8, 2025
    Why is the dew point too high in my Sullair SD-600 Dehumidifier?
    • H
      hernandezstephanieNov 8, 2025
      If the dew point is too high in your Sullair Dehumidifier, it could be due to several reasons. The operating pressure might be too low, or the air flow capacity might be too high; in this case, increase the operating pressure and reduce the air flow capacity. Another cause could be that the air inlet temperature is too high; reduce the temperature, or connect an air cooler upstream. Also, the differential pressure at the pre-filter might be too high; check the filter element for impurities and change it if necessary. The condensate drain might not be functioning; check its operation and replace it if needed. The desiccant could be soiled or have disintegrated; check the pre-filter for impurities, change the filter element, and replace the desiccant, disposing of the old desiccant. The volu...
  • S
    Shaun RojasDec 1, 2025
    What to do if my Sullair Adsorption Dryer does not switch over?
    • D
      Denise WilliamsonDec 1, 2025
      If your Sullair Adsorption Dryer isn't switching over, it could be due to several factors. The inlet valve combination might not be opening or switching; in this case, check the electrical functioning of the solenoids and replace either the solenoid or the complete valve combination. Another reason could be a non-functioning PLC, so check the PLC and the fuse in the control cabinet. The vessel might not be pressurized, so check whether the blow-off valves are dirty and replace these if necessary; also check the electrical functioning of the solenoids and replace either the solenoid or the complete valve combination. Additionally, the regeneration orifice could be obstructed, so clean or replace it. Lastly, the pressure switch might be defective or set at the wrong pressure (DDS system only...

Summary

Section 1 Introduction

1.2 Safety Instructions

Essential safety tips for setup, operation, and servicing.

1.2.2 Safety Tips for Maintenance

Safety guidelines for maintenance, inspection, and assembly tasks.

Section 2 Installation

2.1 Set-up and Installation

Detailed steps for positioning and connecting the dryer.

Section 3 Start Up and Operation

3.1 Start Up and Shut Down

Procedures and precautions for starting up and shutting down the dryer.

3.2 Description of the Operation

3.2.3 Operating Sequence (DDS Option)

3.2.4 Alarms

Description of common and optional alarms.

3.2.5 Electrical Control

Section 4 Maintenance

4.1 Replacement of the Desiccant

Step-by-step guide for replacing the desiccant material.

4.5 Filters

4.5.5 Changing of Filter Elements

Section 5 Dryer Flow Capacity and Purge Adjustment

5.1 Dryer Flow Capacity

Section 7 Trouble Shooting & Faults

7.1 The Dew Point is Too High

Identifies possible causes and solutions for high dew point.

7.2 The Adsorption Dryer Does Not Switch Over

Lists possible causes and solutions for dryer switching failure.

7.3 Back Pressure During Regeneration

7.5 Shut-Down for Fault or Maintenance

Procedures for safely shutting down the dryer for faults or maintenance.

Sullair SD-600 Specifications

General IconGeneral
BrandSullair
ModelSD-600
CategoryDehumidifier
LanguageEnglish

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