Guardian 55 ES User Manual (English)

Questions and Answers:

T
Tamara HawkinsAug 12, 2025
How to fix a Guardian Portable Generator that will not spray?
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  Mr. Carlos HallAug 12, 2025
  If your Guardian Portable Generator isn't spraying, it could be due to several reasons. First, ensure the formulation tank isn't empty by adding more formulation. Check for air or vacuum leaks and tighten all fittings from the formulation tank to the nozzle. Inspect the in-line filter for clogs and clean if necessary. Make sure the manual or electrical valve at the nozzle is open and unobstructed. Examine all tubing from the formulation tank to the nozzle for breaks, melting, or clogs. Lastly, the nozzle itself might be clogged, so remove and clean the nozzle tip.
Y
ypetersenAug 16, 2025
Why does the air pressure increase at constant engine RPM's on my Guardian Portable Generator?
- C
  Christina GarciaAug 16, 2025
  If the air pressure increases at constant engine RPMs in your Guardian Portable Generator, the nozzle might be clogged. Remove and clean the nozzle tip. Alternatively, the air pressure gauge could be faulty and may need to be replaced.
E
elliottwendyAug 20, 2025
What to do if there is too much fluid flow through the nozzle of my Guardian 55 ES?
- T
  Tyler MartinAug 20, 2025
  If you're experiencing too much fluid flow through the nozzle of your Guardian Portable Generator, it might be due to a missing oriface disk. Add the oriface disk. Alternatively, the oriface disk might be too large; in that case, reduce the size of the oriface disk diameter.
M
matthewsimpsonAug 23, 2025
Why are the atomization droplets too large on my Guardian 55 ES Portable Generator?
- W
  William KruegerAug 23, 2025
  If the atomization droplets are too large when using your Guardian Portable Generator, try increasing the engine RPM to increase air pressure. The oriface disk might also be too large; try reducing its diameter. Also, the nozzle could be gumming up or varnishing. Clean the nozzle, and if necessary, soak it in industrial cleaners.
N
Nicole TannerAug 27, 2025
What to do if the spray continues when valve closed on my Guardian 55 ES?
- A
  Angela McgrathAug 27, 2025
  If the spray continues even when the valve is closed on your Guardian Portable Generator, it indicates that the valve is not closing completely. Inspect and clean the valve to remove any potential contaminants.
M
Matthew FieldsAug 30, 2025
Why is there too little fluid flow through the nozzle of my Guardian Portable Generator?
- L
  Lisa MoranAug 31, 2025
  If you have too little fluid flow through the nozzle of your Guardian Portable Generator, it could be because the oriface disk is too small; try increasing its diameter. The nozzle might also be clogged, so remove and clean the nozzle tip. Check for air or vacuum leaks and tighten all fittings from the formulation tank to the nozzle. Finally, the formulation filter might be clogged; check and clean the in-line filter if necessary.
S
shannonsmithSep 4, 2025
What causes no air flow through the nozzle of my Guardian 55 ES?
- B
  bescobarSep 4, 2025
  If there is no air flow through the nozzle of your Guardian Portable Generator, first check if the engine is on and start it if it isn't. Inspect the belt for looseness, breakage, or slippage off the pulley/flywheel, and replace or repair if needed. Ensure the supply hose is connected. Examine the supply hose for worn areas, holes, or fitting breaks. Finally, if the pressure relief valve is stuck open, decrease the engine RPM or check and replace the relief valve.
Y
ymyersSep 7, 2025
Why are the atomization droplets too small on my Guardian Portable Generator?
- C
  Cheryl BrownSep 7, 2025
  If the atomization droplets are too small when using your Guardian Portable Generator, it could be because the engine RPM and air pressure are too high. Reduce the engine RPM to decrease the air pressure. Alternatively, the oriface disk might be too small, so try increasing its diameter.

Guardian 55 ES Specifications

General

Brand	Guardian
Model	55 ES
Category	Portable Generator
Language	English

Summary

Specifications

Engine Specifications

Provides detailed specifications for the engine, including make, model, power, type, and fuel.

Compressor Specifications

Lists technical specifications for the compressor, covering make, model, performance, and oil capacity.

Drive Couple Method

Specifies the method used for the drive couple, which connects the engine to the compressor.

Nozzle Specifications

Details the nozzle specifications, including model, port size, material, and rotation capabilities.

General Information

Introduction

An overview of the ULV sprayer, emphasizing the importance of following operating and maintenance instructions.

Servicing the Engine

Direction Reference

Safety Information

General Safety Information

Highlights that operator safety and machine integrity depend on proper training and adherence to instructions.

Signal Words Explained

Explains the meaning of hazard signal words (DANGER, WARNING, CAUTION) and safety symbols used in the manual.

Before Operation Considerations

Operation Considerations

Maintenance and Storage

Familiarization

Operator Controls

Describes the manual and optional remote controls for engine and spray functions, aiding user interaction.

Air Pressure Gauge

Explains the function, range, and importance of the air pressure gauge for correct atomization.

Spray Valve (Ball Valve)

Details the manual ball valve controlling chemical flow and mentions its available remote electric option.

Formulation Filter and Orifice

Explains the inline filter and orifice disk's role in controlling formulation flow and desired droplet size.

Formulation Tank

Describes the capacity, material, and suitability of the formulation tank for vector control products.

Atomization Nozzle

Describes the nozzle's design for atomizing formulations into micron droplets and its positioning capabilities.

Installation

Factory Fluid Levels

Lists the initial fluid levels (engine oil, compressor oil, fuel, formulation) upon receiving the sprayer.

Vehicle Installation

Provides instructions for mounting and securing the ULV sprayer onto various vehicles like ATVs or UTVs.

Engine Starting & Stopping

Engine Symbols

Explains various engine symbols related to fuel selection, choke operation, and throttle control.

Recoil Start (Pull Start)

Provides a step-by-step guide for starting the engine using the recoil starter rope and manual choke.

Maintenance

Checking Engine Crankcase Oil Level

Instructs on how to check and maintain the engine oil level correctly using the dipstick.

Changing Engine Crankcase Oil

Details the procedure for changing the engine crankcase oil at specified intervals for proper lubrication.

Engine Air Cleaner

Explains the importance of the engine air cleaner and how to service it based on operating conditions.

Compressor Lubrication

Describes how to check and maintain the lubrication oil level for the air compressor using the sight gauge.

Cleaning the Machine

Provides guidelines for cleaning the ULV sprayer, emphasizing warm water, mild cleaners, and avoiding hot parts.

Belt Tension

Explains the importance of correct belt tension and alignment for optimal sprayer operation and longevity.

Lubrication and Maintenance Schedule

Calibration

Flow Calibration Description

Explains how flow is controlled by pressure and orifice size, and provides charts for flow rates.

Flow Calibration Procedures

Flow Diagram

Troubleshooting

Illustrated Parts Breakdown

Guardian 55 ES Parts List

Guardian ULV Limited Warranty

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Guardian 55 ES User Manual

Table of Contents