AirMan SDG150S-8B1 - User Manual

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Table of Contents

Questions and Answers

B
Brianna GayAug 16, 2025
What to do if the coolant temperature rise monitor lamp glows in my AirMan SDG150S-8B1?
- A
  Ashley QuinnAug 16, 2025
  If the coolant temperature rise monitor lamp glows, it could be due to several reasons. The radiator might be clogged, so try cleaning it. The thermostat or the coolant temperature switch could be faulty, in which case you should replace them. There might be a shortage of coolant, so replenish it. The fan belt may be slipping, so adjust the tension. Finally, check for any looseness or disconnection of wiring or connectors and repair them if needed.
J
Jasmine Sanders DDSAug 18, 2025
What to do if the engine oil pressure drop monitor lamp glows in my AirMan Portable Generator?
- M
  Matthew RogersAug 19, 2025
  If the engine oil pressure drop monitor lamp is glowing, it could be due to several reasons. You might have an engine oil shortage, so replenish the oil. The engine oil filter could be clogged, so change it. The oil pressure switch might be malfunctioning, so replace it. Also, check for any loosened or disconnected wiring or connectors and repair them.
D
donald90Aug 21, 2025
What to do if starter rotates but engine does not start up in AirMan Portable Generator?
- P
  Pamela RichardsAug 22, 2025
  If the starter rotates but the engine doesn't start, it could be due to a few reasons. The fuel filter or fuel pre-filter might be clogged, so disassemble, clean, and change them. You may have no diesel fuel oil, so replenish the fuel. There might be air mixing in the fuel pipings, so bleed the air.
N
Nathan BrockAug 25, 2025
Why is my AirMan Portable Generator generating unstable voltage?
- S
  Shelly OliverAug 26, 2025
  Unstable voltage generation can be caused by several factors. Check and repair any poorly tightened terminals. A faulty AVR could also be the cause, so check and change it if necessary. Reset the function circuit protector (CP) for AVR protection.
A
Ann PerezAug 28, 2025
What to do if my AirMan Portable Generator is generating too high voltage?
- T
  Terry RamirezAug 28, 2025
  If your generator is generating too high voltage, especially when set at the rated frequency, it could be due to a few reasons. Check and repair any loosened or disconnected wiring or connectors to the AVR. The AVR itself might be faulty, so consider checking and changing it. Also, inspect the AVR variable resistor for broken wires or poor contact; repair or change it as needed.
C
Collin SuttonAug 30, 2025
Why AirMan Portable Generator even when operated at a rated speed, no voltage or too low voltage generated?
- L
  Lisa RochaAug 30, 2025
  If your generator produces no voltage or too low voltage even when operated at a rated speed, several issues could be the cause. Check and replace a faulty voltmeter. Inspect and repair any poorly tightened terminals. Examine the generator's main unit for broken or short-circuited winding, and repair if needed. Check and replace a faulty AVR or silicon rectifier. Inspect and repair a faulty exciter, or any broken or short-circuited circuit to the exciter field winding. Ensure the AVR frequency selection switch is correctly set. Finally, reset the function circuit protector (CP) for AVR protection.
M
Mr. Michael RothSep 3, 2025
What to do if oil fence monitor lamp glows in AirMan Portable Generator?
- C
  Carol RamirezSep 3, 2025
  If the oil fence monitor lamp glows, it could be because the condensate (fuel, engine oil, and coolant) has accumulated in the oil fence, so drain the condensate. Alternatively, the liquid surface level detecting switch may not be functioning correctly, so check or change it.
S
scalhounSep 6, 2025
What to do if leakage relay lamp glows in AirMan SDG150S-8B1 Portable Generator?
- P
  Paul RomeroSep 6, 2025
  If the leakage relay lamp glows, it indicates a leakage. Check and repair for leakage on the generator side, the load side, or the connecting cable. If none of these are the cause, the leakage relay itself may be defective, so check and repair it.
W
williamsmithSep 8, 2025
Why the monitor lamp for air filter clogging flickers in my AirMan SDG150S-8B1 Portable Generator?
- A
  Andrew RiosSep 9, 2025
  The monitor lamp for air filter clogging flickers because of air filter clogging. Clean the air filter.
C
Caroline KerrSep 12, 2025
How to fix a starter that does not rotate in AirMan SDG150S-8B1 Portable Generator?
- S
  Sheila BryantSep 12, 2025
  If the starter does not rotate, it may be due to a battery malfunction. Check the battery and charge or change it as needed.

Summary

Safety Precautions and Warnings

Handling Battery Safely

Provides critical safety warnings for handling batteries, including explosion risks.

Cautions During Operation

Warns against touching output terminals and rotating parts, and removing radiator cap.

Installation Guide

Grounding Methods and Electrical Connections

Explains ground terminals, building connections, and the unit's ground system.

Generator Operation Procedures

Instrument Panel Overview

Identifies and describes the function of each meter and indicator on the control panel.

Generator Protection Devices

Details the various protection devices and their functions for safe operation.

Connecting Loads Safely

Provides safety guidelines for connecting loads, including grounding and wiring.

Pre-Start Machine Checks

Outlines essential checks before starting the machine, including oil and coolant levels.

Unit Operation and Starting Procedure

Guides on unit operation and provides a step-by-step manual starting procedure.

Emergency Stop Button Usage

Explains the proper use and reset procedure for the emergency stop button.

Periodic Inspection and Maintenance

Key Periodic Maintenance Precautions

Periodic Inspection Schedule

Engine Oil Change Procedure

Maintenance and Adjustment

Battery Maintenance and Safety

Troubleshooting Common Issues

Technical Specifications

SDG100 S-8 B1 Specifications

SDG125 S-8 B1 Specifications

SDG150 S-8 B1 Specifications

Wiring Diagrams

Generator Wiring Diagram

Engine Wiring Diagram (SDG100;125 S)

Engine Wiring Diagram (SDG150 S)

Summary

Safety Precautions and Warnings

Handling Battery Safely

Provides critical safety warnings for handling batteries, including explosion risks.

Cautions During Operation

Warns against touching output terminals and rotating parts, and removing radiator cap.

Installation Guide

Grounding Methods and Electrical Connections

Explains ground terminals, building connections, and the unit's ground system.

Generator Operation Procedures

Instrument Panel Overview

Identifies and describes the function of each meter and indicator on the control panel.

Generator Protection Devices

Details the various protection devices and their functions for safe operation.

Connecting Loads Safely

Provides safety guidelines for connecting loads, including grounding and wiring.

Pre-Start Machine Checks

Outlines essential checks before starting the machine, including oil and coolant levels.

Unit Operation and Starting Procedure

Guides on unit operation and provides a step-by-step manual starting procedure.

Emergency Stop Button Usage

Explains the proper use and reset procedure for the emergency stop button.

Periodic Inspection and Maintenance

Key Periodic Maintenance Precautions

Periodic Inspection Schedule

Engine Oil Change Procedure

Maintenance and Adjustment

Battery Maintenance and Safety

Troubleshooting Common Issues

Technical Specifications

SDG100 S-8 B1 Specifications

SDG125 S-8 B1 Specifications

SDG150 S-8 B1 Specifications

Wiring Diagrams

Generator Wiring Diagram

Engine Wiring Diagram (SDG100;125 S)

Engine Wiring Diagram (SDG150 S)

AirMan SDG150S-8B1 Specifications

General

Model	SDG150S-8B1
Starting System	Recoil Start
Fuel Type	Gasoline
Type	Portable Inverter Generator
Engine Type	4-stroke, OHV

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