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Sullair 375H - User Manual

Sullair 375H
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OPERATOR’S MANUAL AND PARTS LIST
Po r t a b l e ai r Co m P r e s s o r
300HH, 375, 375H, 375HH, 425
a n d 425H
John Deere Standard and Aftercooled and Filtered
PART NUMBER:
02250169-727 R02
©
SULLAIR CORPORATION
The information in this document
is correct at the time of printing for
portable compressor serial number
200803170000
and all subsequent serial numbers.
KEEP FOR
FUTURE
REFERENCE

Table of Contents

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Questions and Answers

  • S
    Sabrina CarlsonSep 4, 2025
    What to do if my Sullair 375H Air Compressor engine does not crank or start?
    • R
      Raymond FreemanSep 4, 2025
      If your Sullair Air Compressor engine doesn't crank or starts, check the battery cables and tighten them if they are loose. Also, inspect the ground wire for secure attachment to the frame and tighten if needed. If the issue persists, recharge or replace the battery. Examine the fuse in the wiring harness and replace it if it's blown. Check the instrument panel connectors and wires for loose connections, breaks, or corrosion, and reattach, clean, or replace as necessary. Finally, a faulty SSAM module may also be the reason, try to replace the module.
  • D
    davidallenSep 18, 2025
    How to fix Sullair Air Compressor that does not crank?
    • S
      Stephanie Garcia MDSep 18, 2025
      If your Sullair Air Compressor doesn't crank, it might be due to low voltage or a disconnected battery. Check the battery cables and tighten them if they are loose. Also, check the ground wire for proper attachment to the frame and tighten if required. If the battery is the issue, recharge or replace it. Another potential cause is a blown fuse in the wiring harness, so remove and inspect the fuse, replacing it if necessary.
  • A
    Amy JohnsonSep 16, 2025
    Why does my Sullair Air Compressor engine crank but not start?
    • S
      Sarah GonzalezSep 16, 2025
      There are several potential reasons why your Sullair Air Compressor engine cranks but doesn't start: * **Low voltage or battery issues:** Check and tighten battery cables and the ground wire. Recharge or replace the battery if needed. * **Blown fuse:** Inspect and replace any blown fuses in the wiring harness. * **Loose instrument panel connectors:** Check and reattach any loose connectors. Also, inspect wires for breaks or corrosion, cleaning or replacing them as necessary. * **Faulty SSAM module:** Consider replacing the SSAM module.
  • J
    Joe FryeSep 14, 2025
    What to do if the Sullair 375H shows a low fuel level?
    • Q
      qjohnsonSep 14, 2025
      If the Sullair Air Compressor indicates a low fuel level, check the fuel level and fill the tank if it is empty.
  • M
    Michael WeberSep 13, 2025
    What to do if the Sullair 375H Air Compressor engine speed is too low?
    • J
      jilliancervantesSep 13, 2025
      If the engine speed of your Sullair air compressor is too low, consider the following: * Check and tighten the battery cables if the battery voltage is low. * Recharge or replace the battery if necessary. * Refuel if there is no fuel. * Drain water from the fuel/water separators on the fuel filters, and siphon water from the fuel tank, cleaning the tank if necessary, if there is water or dirt in the fuel and/or filter. * Clean and replace the air filter if it is plugged. * Replace the fuel filter if it is plugged. * Check wiring and tighten all connectors, and replace the relay if the starter solenoid relay does not engage. * Check alternator 'W' terminal (7.5 ± 2.50 VAC greater than 300 HZ) if there is no input frequency from the alternator.
  • H
    hhamiltonSep 12, 2025
    What causes excessive fluid consumption in a Sullair Air Compressor?
    • M
      melissa77Sep 12, 2025
      Excessive compressor fluid consumption in your Sullair Air Compressor may be due to: * A clogged return line; clear the orifice and return line strainer. * A lubrication system leak; check all pipes, connections, and components. * A separator element that is damaged or malfunctioning; change the separator element.
  • N
    nortondavidSep 9, 2025
    What causes insufficient air delivery in a Sullair 375H Air Compressor?
    • W
      William BallardSep 9, 2025
      Insufficient air delivery in your Sullair air compressor can be caused by several factors: * The run/start valve might not be in the run position; if your compressor has idle warm-up controls, switch the valve to RUN for full operation. * A plugged air filter; replace it. * A defective idle warm-up valve; replace the valve. * A plugged air/fluid separator; replace the separator element and also change the compressor fluid and fluid filter. * A defective pressure regulator; adjust or repair it.
  • V
    Virginia GonzalesSep 7, 2025
    What causes high temperature in my Sullair 375H Air Compressor?
    • J
      Joanna WilsonSep 7, 2025
      High compressor temperature could be due to: * An open compressor temperature switch; check the wiring connection and tighten if loose, or check switch continuity to ground and replace if necessary. * Low receiver tank fluid level; add fluid to the receiver tank as required. * A loose or broken fan belt; tighten or replace the belt. * Insufficient cooling air flow or a dirty fluid cooler core; clean the core thoroughly and check for proper ventilation. * A clogged compressor fluid filter; change the fluid filter element. * A faulty fluid thermostat; change the fluid thermostat element. * A plugged fluid cooler tube (internal); replace the cooler.
  • J
    jacquelinestewartSep 5, 2025
    Why is my Sullair Air Compressor engine coolant temperature high?
    • S
      Savannah DyerSep 6, 2025
      Several factors can cause the engine coolant temperature to be high: * The engine coolant temperature switch may be open; check the wiring connection and tighten if necessary, or check the switch continuity to ground and replace if necessary. * Insufficient cooling airflow; clean the cooler and check for proper ventilation. * A loose or broken fan belt; tighten or replace the belt. * Low engine coolant; fill with the proper water/glycol mixture as required. * A faulty water pump; change the pump. * A defective engine thermostat; change the thermostat element.
  • J
    jasonhamiltonAug 21, 2025
    What does SSAM flash code two flashes mean on a Sullair 375H?
    • K
      Kimberly MedinaAug 21, 2025
      If your Sullair Air Compressor shows SSAM flash code two flashes, it indicates that the engine coolant temperature switch is open, insufficient cooling airflow, or a loose/broken fan belt, or no engine coolant. Check the wiring connection to the switch and tighten it if necessary. Also, check the switch continuity to ground and replace if necessary. Clean the cooler and check for proper ventilation. Check the fan belt and tighten or replace it if necessary. Fill with proper water/glycol mixture as required.

Summary

Section 1: Safety

1.1 General Safety Precautions

General safety guidelines for operating and maintaining Sullair compressors.

1.2 Towing and Preparing to Tow

Detailed procedures and warnings for safely towing the air compressor.

1.4 Fire and Explosion Hazards

Precautions to prevent fire and explosion risks associated with the compressor.

1.5 Moving Parts Safety

Warnings and precautions regarding moving components of the compressor.

1.6 Hot Surfaces, Sharp Edges, and Corners

1.7 Toxic and Irritating Substances

Precautions for handling toxic materials and compressed air safety.

1.8 Electrical Shock Hazards

Safety guidelines to prevent electrical shock when working with the compressor.

1.9 Lifting Procedures

Safe practices for lifting and rigging the compressor unit.

1.10 Entrapment Hazards

1.11 Jump Starting Procedures

Step-by-step instructions for safely jump-starting the compressor.

1.12 Implementation of Lockout;Tagout

Procedures for safely controlling energy sources during maintenance.

Section 2: Description

2.2 Description of Components

2.3 Sullair Compressor Unit Functional Description

Functional description of the single-stage, positive displacement rotary screw compressor.

2.4 Compressor Cooling and Lubrication System

Explanation of the system that maintains compressor temperature and lubrication.

2.5 Compressor Discharge System

Description of the receiver tank's functions and air/fluid separation.

2.6 Capacity Control System

How the control system regulates air intake based on demand.

2.8 Instrument Panel Group

Overview of controls and indicators on the compressor's instrument panel.

Accessing Stored Trouble Codes

Accessing Active Trouble Codes

Engine Shutdown Codes

Explanation of codes displayed by the compressor shutdown system.

2.13 Listing of Engine Diagnostic Codes (DTCS)

List of engine diagnostic trouble codes and their corrective actions.

2.10 Electrical System, Functional Description

2.11 Compressor Shutdown & Warning System

Description of the system that monitors and manages compressor shutdowns.

Section 4: General Operation

4.2 Purpose of Controls

4.3 Initial Startup;Shutdown Procedure

Step-by-step guide for starting and shutting down the compressor for the first time.

4.4 Restart Procedure

Instructions for restarting the compressor after initial use.

Section 5: Maintenance

5.2 Daily Maintenance

5.3 Maintenance After Initial 50 Hours

5.4 Maintenance Every 50 Hours

5.6 Maintenance Every 250 Hours

5.7 Maintenance Every 1500 Hours

Major service tasks to be performed every 1500 operating hours.

5.8 Part Replacement and Adjustment Procedures

Detailed procedures for replacing key compressor components.

Compressor Fluid Filter Element Replacement

Air Filter Maintenance

5.9 Trouble Shooting

Guide to diagnosing and resolving common compressor symptoms and issues.

Section 6: Noise Control

6.2 Tampering with the Noise Control System

Prohibitions and acts considered tampering with noise control systems.

6.3 Noise Emissions Maintenance and Maintenance Record Log

Section 7: Illustrations and Parts List

7.1 Procedure for Ordering Parts

7.2 Recommended Spare Parts List

A list of recommended spare parts with part numbers and quantities.

7.3 Engine, Compressor and Parts

7.4 Radiator & Compressor Fluid Cooling System

7.5 Air Inlet System & Exhaust System

7.6 Control Parts & Discharge Parts - 375 and 425

7.6 a Control Parts & Discharge Parts - 375 and 425 CE (European) Models

7.8 Regulator;Blowdown Valve - 375 And 425

7.9 Regulator;Blowdown Valve - 300 HH, 375 H, 375 HH and 425 H

7.12 Optional Aftercooler;Filter And Parts

7.12 a Optional Aftercooler;Filter And Parts CE (European) Models

7.13 Electrical Parts

7.14 Instrument Panel & Parts

7.15 Fuel Tank & Connections

7.16 Frame, Axle & Parts And Axle Assembly

7.16 a Frame & Parts CE (European) Models

7.17 Axle Assembly-American Models

7.18 Canopy, Acoustical Panels & Parts

7.18 a Canopy, Acoustical Panels & Parts CE (European) Models

Sullair 375H Specifications

General IconGeneral
Free Air Delivery375 cfm
Pressure150 psi
Model375H
Air Delivery375 cfm
Operating Pressure150 psi
Sound Level76 dBA
TypeRotary Screw

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