Stinger Refrigerant Recovery Unit

Questions and Answers

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Linda GregoryAug 14, 2025
What to do if Stinger Test Equipment compressor cuts out with high pressure and red LED?
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  Tracy CervantesAug 14, 2025
  If the compressor starts and cuts out within minutes, the high pressure gauge reads high, and the status LED is red, it could be due to several reasons. First, ensure the function valve is in the RECOVER position, not PURGE. Then, check that the outlet valve is OPEN. Also, verify that the recovery tank valves are open and that there isn't a blockage in the discharge hose. Finally, bleed any air from the system or tank.
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Felicia VelasquezAug 20, 2025
How to fix a slow recovery process on Stinger Test Equipment?
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  Jessica AtkinsonAug 20, 2025
  If the recovery process with your Stinger Test Equipment is too slow, it might be due to high head pressure. Try reducing the tank temperature or changing tanks. Another cause could be the system refrigerant icing up, so interrupt the process and allow the ice to dissipate. Also, check for any restrictions in the hoses or manifold gauge set and clear them. Finally, worn compressor seals could be the culprit, requiring a compressor rebuild.
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Jeffrey TranAug 25, 2025
Why is the cooling fan not running on my Stinger Refrigerant Recovery Unit?
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  mullinschristopherAug 25, 2025
  If the AC power switch is ON, but the cooling fan isn't running on your Stinger Test Equipment, it could be due to a defective fan, which would need replacement. Alternatively, there might be an obstruction in the fan blades, so remove any obstructions.
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Julian RayAug 27, 2025
What causes Stinger Test Equipment to overheat?
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  llawsonAug 27, 2025
  If your Stinger Test Equipment unit overheats, it may be due to excessive suction pressure caused by high ambient temperature. Reduce the inlet pressure below 80 psi by throttling the inlet valve.
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allisonmillerAug 30, 2025
What to do if Stinger Refrigerant Recovery Unit won't turn on?
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  Mr. Gregory JonesAug 30, 2025
  If the AC power switch is ON, but the fan, compressor, and status LED are all OFF on your Stinger Test Equipment, first ensure the power cord is properly attached. Next, verify there is voltage at the AC outlet. Lastly, check if the circuit breaker has opened; if so, identify and rectify the cause before resetting it.
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Courtney SellersSep 3, 2025
Why is the compressor off but the fan is running on Stinger Test Equipment?
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  Michael SosaSep 3, 2025
  If the Status LED is OFF, the fan is running, but the compressor is OFF on your Stinger Test Equipment, it could be because the low pressure switch has activated due to the inlet port reaching a vacuum of 13" Hg during the recovery process, indicating system evacuation is complete. If the low pressure switch remains activated even after exposing the inlet port to atmospheric pressure, apply 1 – 2 psi pressure to the inlet port to reset it.
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kathryn00Sep 6, 2025
What to do if Stinger Refrigerant Recovery Unit compressor cuts out with low pressure and LED off?
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  clarkmorganSep 6, 2025
  If the compressor starts but cuts out within a few minutes, the low pressure gauge reads low, and the status LED is OFF on your Stinger Test Equipment, first ensure the inlet valve is in the RECOVER position, not PURGE or CLOSED. Also, check for any blockages in the intake hose and clear them.
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Michael PalmerSep 9, 2025
Why does the status LED stay red on Stinger Test Equipment after fixing high pressure?
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  Larry BarnesSep 9, 2025
  If the Status LED still glows red after clearing a high pressure condition on your Stinger Test Equipment, it's possible the high pressure circuit has latched ON. Turn the unit OFF and then back ON to resolve this.
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Maria McdonaldNov 16, 2025
Why is the status LED red and the Stinger Test Equipment compressor not working?
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  Chloe GarciaNov 16, 2025
  If the Status LED glows red and the compressor either doesn't start or stops running, first ensure the yellow STI cord is connected to the tank if you're using the optional 80% tank full shutoff. If the tank is full, and you have a float switch, it may have opened; if not, short the cord and use a scale. A faulty float switch may also be the cause, so try changing tanks. High pressure exceeding 550 psi could also trigger this; check for discharge line restrictions and ensure the recovery tank valve is open, then rotate the function valve to PURGE and back to RECOVER, and check that the outlet valve is OPEN. Overheating can also cause this, so turn the unit OFF and let it cool for at least 15 minutes. If none of these solve the issue, it may indicate an electronics failure requiring factory...

Summary

Product Introduction

Brand and Model Identification

Identifies the Bacharach STINGER Refrigerant Recovery Unit and its model.

Warranty Information

Warranty Service Process

Outlines the 1-year warranty, excluding misuse, and the OTC exchange program steps.

Safety Precautions

General Safety Warnings

Covers essential cautions and warnings before operating the unit and handling refrigerants.

Operational Safety Guidelines

Flammable Gas and Refrigerant Handling

Details warnings about flammable gases, refrigerant vapor inhalation, and safe handling practices.

First Aid and Equipment Handling

Essential Equipment Usage Requirements

Provides first aid for exposure, and guidelines for grounding, extension cords, hoses, and tanks.

Technical Specifications

Refrigerant Recovery Rates

Lists certified recovery rates (lb/min and kg/min) for various refrigerants.

Product Specifications Details

Compatible Refrigerants and Power

Details compatible refrigerants, power requirements, compressor, cooling, protection, and pressure ratings.

Front View Features

Component Identification - Front Panel

Identifies key components on the front panel of the STINGER unit via a labeled diagram.

Front Panel Component Descriptions

Status LED and Gauge Explanations

Explains the function of the Status LED Indicator, Inlet Gauge, Outlet Gauge, and various valves.

Rear View Features

Component Identification - Rear Panel

Identifies key components on the rear panel of the STINGER unit via a labeled diagram.

Rear Panel Component Descriptions

Power and Accessory Connections

Explains the function of the Power Switch, Circuit Breakers, optional shutoff cord connector, and storage pocket.

Vapor and Liquid Recovery

Vapor;Liquid Recovery Procedure

Step-by-step instructions for recovering refrigerant in vapor or liquid form.

Liquid Recovery Operations

Liquid Recovery Notes and Precautions

Important notes, cautions, and recommendations for performing liquid refrigerant recovery.

Standard Hose Connections

Hose Connection Diagram

Illustrates the standard connections for refrigerant recovery hoses to the unit and system.

Liquid Push-Pull Recovery

Liquid Push-Pull Operation Guidelines

Provides guidelines and conditions for when liquid push-pull recovery may not be practical.

Liquid Push-Pull Procedure

Steps for Push-Pull Recovery

Detailed steps for connecting hoses and performing the liquid push-pull recovery method.

Liquid Push-Pull Diagram

Liquid Push-Pull Operation Setup

Diagram illustrating the setup for a liquid push-pull recovery operation.

Liquid-Pull Recovery Method

Liquid-Pull Recovery;Charging Operation

Describes the liquid-pull method for recovering/charging refrigerant and its operation.

R-410 A Recovery Specifics

R-410 A Recovery Precautions and Notes

Special notes and precautions for recovering R-410A refrigerant due to its properties.

R-410 A Recovery Diagram

R-410 A Recovery Setup Illustration

Diagram showing special notes and setup for R410-A recovery operations.

STINGER Purging Procedure

Steps for Purging the Unit

Step-by-step instructions to purge the STINGER unit for contamination elimination and refrigerant conservation.

DOT Recovery Cylinder Safety

Cylinder Pressure and Shutoff Cord Safety

Warns about over-pressurizing cylinders with R-410A and details the use of the 80% tank full shutoff cord.

Cylinder Fill Weights

Safe Refrigerant Fill Weight Guidelines

Provides safe fill weights for used refrigerant based on container size, per ARI Guideline K.

Recovery Tips and Best Practices

Tips for Efficient Refrigerant Recovery

Offers advice on using short hoses, identifying refrigerants, pumping liquid first, and using in-line filters.

Recovery Tips Diagram

Recovery Tips Illustration

Illustrates recovery tips such as using short hoses and identifying refrigerant.

Troubleshooting Guide

Troubleshooting: Power and Compressor Issues

Lists problems related to power, compressor not starting/running, and their causes and actions.

Unit Operation Troubleshooting

Troubleshooting: Compressor Cut-out and Overheating

Addresses issues like compressor cutting out, high/low pressure conditions, and unit overheating.

Recovery Performance Troubleshooting

Troubleshooting: Slow Recovery and Icing

Covers problems related to slow recovery, system icing, and compressor seal wear.

Schematic Diagram

Electrical System Schematic

Provides the electrical schematic diagram for the STINGER unit, showing component connections.

STINGER Parts List

STINGER Component Part Numbers

Lists part numbers, descriptions, and quantities for STINGER unit components.

STINGER Exploded View

STINGER Assembly Diagram

Illustrates an exploded view of the STINGER unit, showing component relationships.

Compressor Parts List

Compressor Component Part Numbers

Lists part numbers, descriptions, and quantities for STINGER compressor components.

Compressor Exploded View

Compressor Assembly Diagram

Illustrates an exploded view of the STINGER compressor, showing assembly details.

Declaration of Conformity

EMC Compliance and Product Details

Declares conformity with EN 61326-1:2006 and EMC Directive for the product.