Bacharach Stinger Operating Manual

High Performance Oilless Commercial

Refrigerant Recovery Unit

User Manual

2079-1130 Rev. 5 – September, 2007

Introduction

Congratulations on your purchase of the STINGER high performance oilless recovery unit. Bacharach has worked hard to make the STINGER the highest performing, most portable, and easiest to use recovery unit on the market. We are committed to your complete satisfaction!

CAUTION: These instructions are for personnel trained and experienced in the handling of refrigerants. Unqualified individuals should not attempt to operate this equipment. Failure to follow proper operating procedures may cause personal injury.

WARNING: Inhalation of high concentrations of refrigerant vapors is harmful and may cause heart irregularities, unconsciousness, or death. Deliberate inhalation of refrigerants is extremely dangerous and death can occur without warning. Vapors reduce oxygen available for breathing and are heavier than air. Decomposition products are hazardous. Liquid contact may cause frostbite. All refrigerant containers, equipment, and hoses are under pressure.

CAUTION! Before operating this unit, please read this manual in its

entirety. It is important that you have a thorough understanding of the procedures outlined in this manual. Failure to follow these procedures could void all manufacturer warranties.

WARNING! This unit is capable of over-pressurizing a DOT recovery

cylinder. Ensure that you are using the proper DOT recovery cylinder for the refrigerant that you are recovering. NOTE: R-410 is capable of pressures exceeding 600 psi. Typical DOT recovery cylinders are rated at 350 psi with a pressure relief set at 550 psi. These cylinders should not be used with R-410A. Only cylinders rated at 400 psi with the relief valve setting at 600 psi should be used to for R-410A. Failure to use the proper cylinder can be extremely dangerous!

BEFORE handling refrigerants, read the material safety data sheet from

the refrigerant manufacturer

STINGER Specifications

STINGER

Compatible Refrigerants

Power

Compressor ¾ HP High Performance Oilless

Cooling Two Cooling Fans

Protection

Pressure Ratings

Temperature

Case Blow-Molded, High Impact Polyethylene

Size / Weight Length 17"

Width 9.5"

Height 11"

Weight 24 Lbs.

Certification Complies with UL1963 (not evaluated for automotive use)

Refrigerant Liquid Rate

R-22

R-134A

R-410A

R-12, R-22, R-114, R-134a, R-401A, R-401B, R-401C, R-402A, R-402B, R-404A, R-406A, R-407A, R-407B, R-407C, R-407D, R-408A, R-409A, R-410A, R-411A, R-411B, R-412A, R-500, R-502, R-507, R-509

• 110/120 VAC, 1 Phase, 50/60 Hz, 8 Amps See label on

• 220 VAC, 1 Phase, 50/60 Hz, 4 Amps back of unit

High pressure cutoff at 550 psi. Compressor is protected by circuit breakers and internal compressor thermal sensor. Optional 80% tank full shutoff kit (P/N 2090-0091).

Low Side design pressure 450 PSI High Side design pressure 550 PSI

Operating Range 32 to 104 °F (10 to 40 °C)

Refrigerant Recovery Rates

Certified per ARI 740-95 & 740-98

Vacuum Level

3.53 lb/min

1.60 kg/min

2.67 lb/min

1.21 kg/min

3.02 lb/min

1.37 kg/min

Liquid Push-Pull

Rate

12.30 lb/min

5.58 kg/min

10.98 lb/min

4.98 kg/min

14.62 lb/min

6.63 kg/min

Vapor Rate

0.29 lb/min

0.13 kg/min

0.22 lb/min

0.10 kg/min

0.22 lb/min

0.10 kg/min

(inches Hg)

<15

Introduction ............................................................................................. 2

STINGER Specifications ........................................................................ 3

Table of Contents ................................................................................... 4

General Safety ....................................................................................... 5

Operational Safety .................................................................................. 6

Description of Features .......................................................................... 7

Vapor/Liquid Recovery Operations ......................................................... 9

Standard Recovery Hose Connections ................................................ 10

Liquid Push-Pull Recovery Operations ................................................. 11

Liquid-Pull Recovery / Charging Method .............................................. 13

R-410A Recovery – Special Notes ....................................................... 14

Purging the STINGER .......................................................................... 15

DOT Recovery Cylinder Safety ............................................................ 16

Recovery Tips ...................................................................................... 17

Troubleshooting .................................................................................... 18

Schematic Diagrams ............................................................................ 19

STINGER Parts List ............................................................................. 20

STINGER Exploded View ..................................................................... 21

Compressor Parts List .......................................................................... 22

Compressor Exploded View ................................................................. 23

Warranty / Repair Procedures .............................................................. 24

General Safety

Know your equipment

Read and understand the User Manual and labels affixed to the unit. Learn the application and limitations as well as the specific potential hazards of your equipment.

Ground all equipment

This unit is equipped with a three-pronged grounded power cord.

Use the proper extension cord

Keep extension cord length to a minimum. Use the following guide for choosing the proper extension cord: 18 gauge cord – maximum length 10 feet 16 gauge cord – maximum length 25 feet 14 gauge cord – maximum length 50 feet 12 gauge cord – maximum length 100 feet

Use approved hoses

Use refrigerant connection hoses that are approved to SAE J2196-1992. These hoses must provide a shut-off device within 12 inches of the ends, and must be approved for outdoor usage.

Use approved recovery tank

Use a DOT approved refrigerant recovery tank made for use with the type of refrigerant being recovered. Note that R-410 is capable of pressures exceeding 600 psi. Typical DOT recovery cylinders are rated at 350 psi with a pressure relief set at 550 psi. These cylinders should not be used with R-410A. Only cylinders rated at 400 psi with the relief valve setting at 600 psi should be used to for R-410A. Failure to use the proper cylinder can be extremely dangerous!

Use weight scale

A scale must be used to indicate when the recovery tank is 80% full when the STINGER does not have the 80% Shutoff Kit option installed.

Avoid dangerous environments

Although the unit can be used outdoors, we do not recommend operation in the rain, or in wet locations. Secure the unit when working above floor level. This equipment should not be used in the vicinity of spilled or open containers of flammable materials.

Ventilation requirements

This equipment should be used in a location with mechanical ventilation that provides at least 4 air changes per hour, or the equipment should be located at least 18" above the floor.

Use recommended accessories

Follow the instructions that accompany all accessories. Improper use of accessories may damage the equipment or create a hazard.

Repair damaged parts

Do not operate the unit with a defective part. Repair unit to proper operating conditions.

Operational Safety

WARNING: Inhalation of high concentrations of refrigerant vapors is harmful and may cause heart irregularities, unconsciousness, or death. Deliberate inhalation of refrigerants is extremely dangerous and may cause death. Vapor reduces the oxygen available for breathing and is heavier than air. Decomposition products are hazardous. Liquid contact can cause frostbite. All refrigerant containers, equipment, and hoses are under high pressure.

• Avoid breathing high concentrations of vapors.

• Use with sufficient ventilation to keep operator exposure below recommended limits,

especially in enclosed and low lying areas.

• Avoid contact of liquid with eyes and prolonged skin exposure.

• Wear safety goggles and protective gloves.

• Make sure the power switch is in the OFF position before plugging this equipment into

an AC power source.

• Unplug unit before servicing; otherwise, an electrical shock hazard will be present when

the unit is disassembled.

• Use caution when connecting or disconnecting hoses. Improper usage may result in

refrigerant burns (frostbite). If a significant refrigerant leak occurs, proceed immediately

to a well-ventilated area.

• Do not apply open flame or heat unit above 125 °F.

• Do not allow refrigerants to contact open flame. Decomposition will occur. Inhalation of

decomposition is harmful.

• First Aid:

Breathing: If high concentrations of refrigerant vapors are inhaled, immediately remove

the person(s) to fresh air. Keep calm. If not breathing, give artificial respiration. If

breathing is difficult, give oxygen. Call a doctor. Do not give epinephrine or similar drugs.

Eye: In case of liquid contact, immediately flush eye with water. Seek medical attention.

Skin: Flush with water. Treat for frostbite by gently warming the affected area.

CAUTION: All refrigerant hoses, recovery tanks, refrigerant lines, the STINGER unit,

and other vessels containing refrigerants should be handled at all times as if under high pressure.

Description of Features

1. Inlet Gauge Displays the inlet/suction pressure of the system being

2. Purge Valve This valve determines what function the STINGER

3. Inlet Port Valve Opens or closes the inlet port. Points UP (open) for all

4. Inlet Port Refrigerant hose connection for incoming refrigerant.

5. Outlet Gauge Displays the outlet/discharge pressure.

6. Outlet Port Valve Opens or closes the outlet port. Points UP when it is

7. Outlet Port Refrigerant hose connection for outgoing refrigerant.

8. Circuit Breakers Protects the STINGER from over current.

9. 80% Tank Full Shutoff Cord (Optional)

10. Power Cord Plugs into an appropriate AC outlet. Note that 220 VAC

11. Power Switch When in the ON position, this switch starts the recovery

12. Storage Pocket This heavy-duty storage pocket is used to store the

evacuated.

performs. This valve is UP during recovery operations and DOWN for purging and liquid push-pull operations.

recovery operations and points DOWN for purging operations.

open, and to the left when CLOSED.

This optional accessory connects to a DOT recovery cylinder’s overfill sensor and automatically shuts the STINGER off when the recovery cylinder reaches 80% of its liquid-fill limit. Note: If this option is installed, the STINGER will not operate unless it is connected to a recovery cylinder with a compatible level-float switch. If the recovery cylinder does not have a float switch, then a shorting cap must be installed on the shutoff cord.

units are equipped with a male IEC 60320 plug that requires a customer supplied power-cord adapter that conforms to local electrical codes.

operation by turning ON the compressor.

Operations Manual, the Warranty Card and the Original Invoice. These items should be kept with the unit at all times.

Description of Features Continued

1. Inlet Gauge

2. Purge Valve

3. Inlet Port

5. Outlet Gauge

6. Outlet Port Valve

4. Inlet Port

8. Circuit Breakers

9. Location of optional 80% tank full shutoff cord

10. Power Cord (Note: 220 VAC units have a male IEC 60320 type plug that requires the use of a customer supplied power-cord adapte

)

7. Outlet Port

11. Power Switch

12. Storage Pocket

+ 16 hidden pages