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Refrigerant Recovery Unit
High Performance x Oilless x Commercial
User Manual
2090-0217 Rev. 6
April 2012
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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.
WARRANTY
Bacharach warrants this product for 1 year from the date of purchase indicated on the
original sales receipt. The warranty covers all parts within the unit, but excludes damage to
the unit caused by misuse or mishandling. The unit’s motor brushes carry an extended
warranty of 5 years.
If the unit is in need of warranty service within 1 year of its date of purchase, it will be
replaced with a brand new one via our over the counter (OTC) exchange program. To obtain
a warranty replacement unit via the OTC exchange program, the following steps must be
followed:
1) Return the unit to the wholesaler from whom it was purchased, along with proof
2) If the wholesaler determines the unit is eligible for OTC exchange, it will be
3) The wholesaler should then contact our Customer Service Department for a
If you have any questions, please contact our Customer Service Department at
800-736-4666 or email them at
BACHARACH
names, service marks and logos referenced herein belong to their respective owners.
of purchase (original or copy of sales receipt).
replaced with a brand new one. If the failure is determined to have been caused
by customer misuse or mishandling, the warranty will be voided.
return goods authorization (RGA) in order to return the defective unit and have
an order entered for its replacement. Proof of purchase will be required in order
to process the RGA. OTC exchange units are processed as no charge orders.
help@mybacharach.com
.
Copyright © 2012, Bacharach, Inc.
All rights reserved.
®
is a registered trademark of Bacharach, Inc. All other trademarks, trade
2 2090-0217 Rev 6
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Table of Contents
Safety .................................................................................................................. 4
Specifications ...................................................................................................... 7
Descriptions of Features ...................................................................................... 9
Vapor/Liquid Recovery Operations .................................................................... 13
Standard Recovery Hose Connections .............................................................. 14
Liquid Push-Pull Recovery Operations .............................................................. 16
Liquid-Pull Recovery / Charging Method ............................................................ 19
R-410A Recovery – Special Notes .................................................................... 20
Purging the STINGER ....................................................................................... 22
DOT Recovery Cylinder Safety .......................................................................... 23
Recovery Tips ................................................................................................... 25
Troubleshooting ................................................................................................. 27
Schematic Diagram ........................................................................................... 30
STINGER Parts List........................................................................................... 31
Compressor Parts List ....................................................................................... 33
Declarattion of Conformity ................................................................................. 35
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Safety
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.
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.
HAZARDOUS AREA WARNING: This instrument has not been
designed to be intrinsically safe for use in areas classified as hazardous
locations. DO NOT use it in hazardous (classified) locations.
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COMBUSTIBLE/FLAMMABLE GAS WARNING: For your safety, DO
NOT use this device to recover refrigerants which are rated as
combustible/flammable gases (e.g. ASHRAE -
A2 or A3 rated
refrigerants).
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.
WARNING: Before starting the unit you MUST OPEN the outlet port on
the Stinger and open the port to the recovery tank. Read entire
operating instruction manual before use. Failure to open the outlet port
will cause permanent damage to the unit and void the warranty.
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.
GENERAL SAFETY GUIDELINES:
x Avoid breathing high concentrations of vapors.
x Use with sufficient ventilation to keep operator exposure below
recommended limits, especially in enclosed and low lying areas.
x Avoid contact of liquid with eyes and prolonged skin exposure.
x Wear safety goggles and protective gloves.
x Make sure the power switch is in the OFF position before plugging this
equipment into an AC power source.
x Unplug unit before servicing; otherwise, an electrical shock hazard will be
present when the unit is disassembled.
x 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.
x Do not apply open flame or heat unit above 125 qF.
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x Do not allow refrigerants to contact open flame. Decomposition will occur.
Inhalation of decomposition is harmful.
x First Aid:
Inhalation: 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 Contact: In case of liquid contact, immediately flush eye with water.
Seek medical attention.
Skin Contact: Flush with water. Treat for frostbite by gently warming the
affected area.
x 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.
x Ground all equipment: Stinger is equipped with a three-pronged
grounded power cord.
x 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
x 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.
x 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!
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x Use weight (charging) scale: A scale (P/N 2010-0000) must be used to
indicate when the recovery tank is 80% full when the STINGER does not
have the 80% Shutoff Kit option installed.
x 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.
x 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.
x Use recommended accessories: Follow the instructions that
accompany all accessories. Improper use of accessories may damage
the equipment or create a hazard.
x Repair damaged parts: Do not operate the unit with a defective part.
Repair unit to proper operating conditions.
Specifications
Refrigerant Recovery Rates - Certified per AHRI 740-95 & 740-98
Refriger-
ant
R-22
R-134A
R-410A
Liquid
Rate
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 Rate
(Push-Pull)
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
Vacuum Level
(inches Hg)
0.29 lb/min
>15
0.13 kg/min
0.22 lb/min
>15
0.10 kg/min
0.22 lb/min
>15
0.10 kg/min
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Specification Description
R-12, R-22, R-114, R-134a, R-401A,
R-401B, R-401C, R-402A, R-402B, R-404A,
Compatible
Refrigerants
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
1 Phase, 50/60 Hz, 8 A
Power
1 Phase, 50/60 Hz, 5 or 10 A
1 Phase, 50/60 Hz, 5 A
Compressor ¾ HP High Performance Oilless
Cooling Two Cooling Fans
High pressure cutoff at 550 psi. Compressor is protected by
Protection
circuit breakers and internal compressor thermal sensor.
Optional 80% tank full shutoff kit (P/N 2090-0091).
Pressure
Ratings
Temperature
Low Side design pressure 450 PSI
High Side design pressure 550 PSI
Operating Range 32 to 104 qF (0 to 40 qC)
Case Blow-Molded, High Impact Polyethylene
(See
label on
back of
unit)
Size (LxWxH) 17" x 9.5" x 11" (43.2 cm x 24.1 cm x 27.9 cm)
Weight 28 Lbs (12.7 kg)
Certification Complies with UL1963 (not evaluated for automotive use)
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Descriptions of Features
2090-0217 Rev 6 9
Figure 1. Stinger Front View
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Front View Components
Component Description
Green: Normal operation.
Tank is 80% full or 550 psi pressure limit is
Status LED
Indicator
Red:
Clear:
reached (shut down condition).
Vacuum condition has reached 13” Hg (shut
down condition).
Inlet Gauge
Outlet Gauge
Purge Valve
Inlet Port
Valve
Outlet Port
Valve
Inlet Port
Outlet Port
Displays the inlet/suction pressure of the system being
evacuated.
Displays the outlet/discharge pressure.
This valve determines what function the STINGER performs.
This valve is UP during recovery operations and DOWN for
purging and liquid push-pull operations.
Opens or closes the inlet port. Points UP (open) for all
recovery operations and points DOWN for purging
operations.
Opens or closes the outlet port. Points UP when open, and
to the left when CLOSED.
Refrigerant hose connection for incoming refrigerant.
Refrigerant hose connection for outgoing refrigerant.
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NOTE: If the “Tank Full” Shutoff Cord 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
doesn’t have a float switch, a shorting cap must be installed on
the shutoff cord.
2090-0217 Rev 6 11
Figure 2. Stinger Rear View
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Rear View Components
Component Description
Power Switch
Two Circuit
Breakers
Connector for
optional 80%
tank full
shutoff cord
Storage
Pocket
Power Cord
When in the ON position, this switch starts the recovery
operation by turning ON the compressor.
Protects the STINGER from over current.
This optional accessory (Part Number 2090-0091)
connects to a DOT recovery cylinder’s overfill sensor. It
automatically shuts the STINGER off when the recovery
cylinder reaches 80% of its liquid-fill limit.
This heavy-duty storage pocket is used to store the
Operation Manual, the Warranty Card and the original
invoice. These items should be kept with the unit at all
times.
230 VAC units have a male IEC 60320 type plug that
requires the use of a customer-supplied power-cord
adapter.
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Vapor/Liquid Recovery Operations
Perform the following steps when recovering refrigerant that is either in vapor or
liquid form.
NOTE: Refer to “R-410A Recovery – Special Notes” on page 20 when
recovering R-410A.
1. Turn off all electrical or mechanical power to the refrigerant device to be
evacuated.
2. Make proper hose connections. Connect refrigerant hoses to recovery
cylinder, STINGER, and A/C system as shown on page 15. When possible,
use a manifold-gauge set to recover refrigerant from both the high- and lowside service ports. This will speed up the recovery rates.
CAUTION: If the 80% tank full shutoff cord is not used, then use
a scale (P/N 2010-0000) to monitor the refrigerant level in the
recovery cylinder in order to prevent overfilling.
CAUTION: When recovering R-410A, you must use a recovery
cylinder approved for use with R-410A. Standard recovery
cylinders with 350 psi working pressures are not approved for
use with R-410A.
3. Turn the inlet valve to the “CLOSED” position, the outlet valve to the
“OPEN” position, and the PURGE valve to the “RECOVER” position. Open
the vapor valve on the DOT recovery tank.
4. Use the rear mounted power switch to turn ON the STINGER.
NOTE: When recovering liquid, in rare instances a “knocking” sound may
come from the compressor. This indicates that too much liquid is
entering the compressor. The inlet valve must be regulated
(closed) until this knocking sound stops, otherwise compressor
damage could occur. Pumping liquid when the compressor is
knocking will damage the compressor, reduce the compressor life,
and void the compressor’s warranty. This condition is rare and
should not occur under normal recovery operations.
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5. Slowly open the inlet valve until the Stinger’s compressor turns on. Continue
to slowly regulate the inlet valve to the full open position.
WARNING: If the compressor begins to “knock,” regulate the inlet
valve toward the closed position until the knocking stops. Failure
to do so could void the compressor’s warranty.
6. Proceed with the recovery process until the system pressure shows a
vacuum. Turn OFF the STINGER for a minimum of 5 minutes; after which,
determine the amount of refrigerant remaining in the system. Repeat this
step until system pressure is below mandatory EPA levels.
7. Purge the STINGER as follows:
a. Turn OFF the STINGER.
b. Turn the inlet and purge valves to their “PURGE” position (both pointing
DOWN), and the outlet valve to its “OPEN” position (pointing UP).
c. Turn ON the STINGER and monitor the inlet gauge. The purge
operation is complete when the inlet pressure gauge shows a vacuum.
Standard Recovery Hose Connections
IMPORTANT NOTES FOR LIQUID RECOVERY
The Stinger can be used for pumping virgin refrigerant on an intermittent basis.
Unlike recovered refrigerant, virgin refrigerant does not contain oil.
CAUTION: Routinely pumping virgin refrigerant through the STINGER
can remove lubrication from the compressor, resulting in premature
failure. Use the liquid push-pull method or the liquid-pull method to
transfer large amounts of liquid refrigerant (virgin or dirty).
ATTENTION: You must use an agency-approved in-line filter when
recovering liquid. Contaminants (particularly from the bottom of
recovery cylinders) can enter the STINGER and become lodged in the
valve seats causing damage and resulting in leaks. We recommend
using Bacharach in-line filter P/N 07pumping speed.
1700 to guarantee optimum
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2090-0217 Rev 6 15
Figure 3. Standard Recovery Hose Connections
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Liquid Push-Pull Recovery Operations
ATTENTION: Before attempting liquid push-pull recovery operations,
please review this page.
A scale or liquid-sight glass can be used to determine when all the liquid is
recovered. The STINGER will not pull a vacuum using the liquid push-pull
recovery operation. To finish the recovery operation, you must perform vapor
recovery operations as described on page 13.
GUIDELINES
If any of the following conditions are present in the system being evacuated, the
liquid push-pull operations may not be practical and vapor recovery operations
should be performed.
9 The equipment contains less than 20 lbs of refrigerant.
9 The equipment is a heat pump or other system with
refrigerant flow that would prevent you from isolating the
liquid.
9 Equipment has an accumulator between the service ports
used in the liquid recovery process.
9 Liquid refrigerant migration has occurred and the location of
the liquid is unknown.
9 The refrigerant tubing design on the equipment does not
allow for a solid column of liquid refrigerant to be formed.
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STEPS
The liquid push-pull recovery method requires the use of a third hose. In addition,
a sight-glass is useful for determining when all of the liquid has been pushed out
of the system. After all the liquid has been pushed out, you will need to
reconfigure the hoses for vapor recovery since the liquid push-pull recovery
method does not pull a vacuum on the system.
1. Remove power from the refrigerant device to be evacuated.
2. Make proper hose connections for liquid push-pull recovery as shown in
Figure 4.
CAUTION: If the 80% tank full shutoff cord is not used, then use a
scale to monitor the refrigerant level in the recovery cylinder in order to
prevent overfilling.
CAUTION: When recovering R-410A, you must use a recovery cylinder
approved for use with R-410A. Standard recovery cylinders with
350 psi working pressures are not approved for use with R-410A.
3. Turn the inlet and outlet valves to their “OPEN” position and the PURGE
valve to its “PURGE” position.
NOTE: The “PURGE” position bypasses the condenser, optimizing the
push-pull flow rate.
4. Open both the vapor and liquid valves on the DOT recovery tank.
5. Turn ON the STINGER. The compressor will begin to “pull” vapors from the
cylinder and “push” the liquid out of the system and into the recovery
cylinder.
6. If a sight-glass is being used, you should watch it to determine when all of
the liquid has been removed from the system.
7. The liquid push-pull recovery method will not pull a vacuum in the system.
You must turn OFF the STINGER and reconfigure the hoses for vapor
recovery operations as described on page 13.
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Figure 4. Liquid Push/Pull Recovery Operation
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Liquid-Pull Recovery / Charging Method
The Stinger can be used for pumping virgin refrigerant on an intermittent basis.
Unlike recovered refrigerant, virgin refrigerant does not contain oil.
CAUTION: Routinely pumping virgin refrigerant through the STINGER
can remove lubrication from the compressor, resulting in premature
failure. Use the liquid push-pull method or the liquid-pull method to
transfer large amounts of liquid refrigerant (virgin or dirty).
Figure 5. Liquid Pull Recovery/Charging Operation
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The liquid-pull method is used to move a large amount of liquid refrigerant
without the refrigerant passing directly through the STINGER. The virgin
refrigerant is pulled directly into the system being charged. The STINGER keeps
the pressure low in the system by removing vapor. For every pound of vapor
removed, as much as 25 pounds of liquid refrigerant may be transferred. This
method can be used for either virgin refrigerant or really dirty refrigerant.
R-410A Recovery – Special Notes
R-410A is a replacement refrigerant for R-22. Its physical properties, however,
are much different than R-22. R-410A has a higher vapor pressure and is more
dense than R-22. These characteristics make recovering R-410A more difficult
by putting more of a load on the compressor. Please follow the instructions below
to ensure trouble-free R-410A recovery.
NOTE: Hose connections are the same for recovering R-410A. Connect hoses
as shown in the vapor recovery diagram below.
Under normal operating conditions the STINGER can recover R-410A just like
R-22. Under certain conditions, however, because of R-410A’s higher vapor
pressure and density, you will have to take the following precautions:
CAUTION: USE ONLY DOT RECOVERY CYLINDERS APPROVED
FOR USE WITH R-410A. Overfilling or over-pressurizing your recovery
cylinder is extremely dangerous.
WHEN RECOVERING VAPOR: If the STINGER sounds like it is overloaded
either by slowing down or by making a “knocking” sound, reduce the inlet
pressure by closing or “throttling” the inlet valve until the STINGER begins to run
normally.
WHEN RECOVERING LIQUID: If a loud knocking noise occurs, the inlet
pressure on the STINGER should be throttled back by slowly closing the inlet
valve until the knocking noise stops. This action will prevent compressor
damage.
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2090-0217 Rev 6 21
Figure 6. Special Notes for R410-A Recovery
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Purging the STINGER
The STINGER is equipped with a pump-down purge valve that allows the
technician to pump down or evacuate the STINGER before proceeding to the
next recovery operation. This procedure not only eliminates cross contamination,
but also conserves refrigerant. Follow the steps below to ensure your pumpdown operation is performed correctly.
During the purge operation the entire STINGER is pulled into a vacuum, leaving
no more than 0.1 ounce of refrigerant in the unit.
STEPS
1. After recovery operations are complete, and with the unit still powered ON
and running, make the following control valve position changes (refer to
illustration below):
x Turn the inlet valve (blue knob left side) slowly to the “PURGE”
position (pointer DOWN position).
x Turn the purge valve (black knob center) slowly to the “PURGE”
position (pointer DOWN position).
2. The STINGER will now start purging itself of refrigerant. Allow the unit to run
until the inlet gauge indicates that there is an adequate vacuum present in
the system.
3. Turn OFF the STINGER and then turn the outlet valve (red knob right side) to
its “CLOSED” position.
4. Close the Vapor and Liquid valves on the DOT recovery tank.
5. Remove all hoses.
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Figure 7. Purging the Stinger
DOT Recovery Cylinder Safety
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.
R-410A 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 a pressure relief set at 600 psi should be used to recover
R-410A. Failure to use the proper cylinder can be extremely dangerous.
If your STINGER is equipped with the optional 80% tank full shutoff cord, connect
this cord to a DOT recovery cylinder’s float switch. This cord connection will
automatically shut OFF the STINGER when the recovery cylinder reaches 80%
of its liquid-full limit. It is recommended that you use this cord for added safety.
If your STINGER is not equipped with an 80% tank full shutoff cord, or if you are
using a recovery cylinder that does not have a float switch, then you must use a
scale to prevent overfilling the cylinder.
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NOTE: If the 80% tank full shutoff cord is present, but not being used, then a
shorting cap must be installed on the shutoff cord in order for the
STINGER to operate.
Bacharach uses and recommends the Air Conditioning and Refrigeration
Institute's (ARI) Guideline K for the safe filling and handling of used refrigerant.
This Publication is available from ARI at http://www.ari.org.
The following information provides the safe fill weights for used refrigerant based
on the size of the container and is in accordance with Guideline K.
WATER
CAPACITY
NET REFRIGERANT
WEIGHT
GROSS CONTAINER
WEIGHT (APPROX.)
30 lbs 24 lbs 38 lbs
50 lbs 40 lbs 59 lbs
95 lbs 76 lbs 118 lbs
145 lbs 98 lbs 153 lbs
238 lbs 190 lbs 274 lbs
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Recovery Tips
x Use the shortest hoses possible. Long hoses increase the recovery time.
Remove all restrictions in the hoses. Hoses with ball valves on the ends are
better than hoses that are self-sealing. Remove Schrader core valves when
possible from service ports.
x Always identify the refrigerant you are recovering. This will minimize cross
contamination and help you plan for the amount of refrigerant you will be
recovering.
x Always pump liquid out of the system first, and then recover the remaining
vapors. This will significantly speed up recovery rates.
x With large amounts of refrigerant, use the liquid push-pull recovery method.
This method is three times faster than recovering liquid directly. Refer to the
liquid push-pull instructions on Page 16.
x When possible, recover from both the high and low side service port on the
refrigeration system. This will speed up the recovery rate.
x Use an agency approved in-line filter (P/N 07-1700) to prevent contaminants
from entering the STINGER.
x If the STINGER has the optional 80% tank full shutoff cord installed, connect
this cord to the recovery cylinder’s float switch. If the cylinder does not have a
float switch, then be sure to install a shorting cap on the shutoff cord;
otherwise, the STINGER will not operate.
NOTE: Although using a manifold gauge set will speed up the recovery
process, a manifold gauge set is not required.
2090-0217 Rev 6 25
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Figure 8. Recovery Tips
26 2090-0217 Rev 6
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Troubleshooting
PROBLEM CAUSE ACTION
AC power switch is
ON, but fan, compressor, and status
LED are all OFF
Status LED glows
red –Compressor
does not start or
stops running
Power cord not attached
No voltage at AC outlet
Circuit breaker has opened
Optional 80% tank full shutoff
cord not connected to tank.
Tank is full and float switch
has opened.
Float switch in tank is open.
High pressure switch has
activated due to discharge
pressure exceeding 550 psi.
Compressor motor thermal
overload has tripped
Electronics failure in motor, or
on printed circuit board
Attach power cord.
Verify voltage at job site.
Identify cause of breaker
activation, rectify, and reset.
Connect yellow STI cord to
tank. If tank does not have a
float switch, short cord and
use a scale.
Change tanks. To restart,
power unit off and on again.
Check tank switch with multimeter.
Reduce pressure: Check for
restrictions in discharge line
and that recovery tank valve
is open; rotate function valve
to PURGE and back to
RECOVER; check that outlet
valve is OPEN. To restart,
power unit off and on again.
Turn OFF unit and allow
motor to cool down for at
least 15 minutes.
Status LED is OFF –
Fan is running, but
compressor is OFF
2090-0217 Rev 6 27
Low pressure switch has
activated due to inlet port
reaching a vacuum of 13" Hg
during recovery process
Low pressure switch is still
activated even after inlet port
has been exposed to
atmospheric pressure
Factory service required.
System evacuation is
complete.
Apply 1 – 2 psi pressure to
inlet port to reset low
pressure switch.
Page 28
PROBLEM CAUSE ACTION
Compressor starts
but cuts out within a
few minutes;
pressure indication
on high pressure
gauge is high; status
LED glows red
Status LED still
glows red after high
pressure condition
has been cleared
Compressor starts
but cuts out within a
few minutes;
pressure indication
on low pressure
gauge is low; status
LED is OFF
Function valve is in PURGE
position during recovery and
high pressure switch activates
Outlet valve is not open and
high pressure switch activates
Recovery tank valves closed
Blocked discharge hose
Air in system/tank
High pressure switch was once
activated causing high
pressure circuit to latch ON
Inlet valve is in PURGE or
CLOSED position during
recovery and low pressure
switch activates
Blocked intake hose
Rotate function valve to
RECOVER.
Rotate outlet valve to OPEN
position.
Open tank vapor valve.
Check and clear blockage.
Bleed air from system/tank.
Turn unit OFF and then back
ON.
Rotate inlet valve to
RECOVER.
Check and clear blockage.
AC power switch is
ON, but fan, com-
Power cord not attached
No voltage at AC outlet
Attach power cord.
Verify voltage at job site.
pressor, and status
LED are all OFF
Circuit breaker has opened
Identify cause of breaker
activation, rectify and reset.
Status LED still
glows red after
changing recovery
80% tank full switch has been
activated causing tank full
circuit to latch ON
Turn unit OFF and then back
ON.
tanks
AC power switch is
ON but cooling fan
Defective fan
Obstruction in fan blades
Replace fan.
Remove obstruction.
not running
Unit overheats Excessive suction pressure
due to high ambient
temperature
Reduce inlet pressure below
80 psi by throttling the inlet
valve.
28 2090-0217 Rev 6
Page 29
PROBLEM CAUSE ACTION
Recovery process
too slow
Head pressure too high
System refrigerant iced up
Restriction in hoses or
manifold gauge set
Compressor seals worn
Reduce tank temperature or
change tanks.
Throttle gauge manifold
valves and discharge valves
to reduce pressure
differential between LP and
HP gauges.
Interrupt recovery process
and allow ice to dissipate.
Check and clear restriction.
Rebuild compressor.
2090-0217 Rev 6 29
Page 30
Schematic Diagram
30 2090-0217 Rev 6
Figure 9. Schematic Diagram
Page 31
STINGER Parts List
See exploded view of STINGER in Figure 10.
Item
No.
1 2045-0620 Compressor (110/120 VAC) 1
1 2045-0720 Compressor (230 VAC) 1
1 2090-2042 Compressor (240 VAC) 1
2 2023-0100 Manifold 1
3 2014-0310 High Pressure Switch, 550 psi 1
4 2013-0090 Fan, 4", 110/120 VAC 1
4 2013-0040 Fan, 4", 230 VAC 1
5 2014-0090 Vacuum Switch 1
7 2063-0150 Gauge, Low Pressure 1
8 2063-0160 Gauge, High Pressure 1
12 2014-0030 Circuit Breaker, 10 amp 2
Part
Number
Description Qty
13 2013-0055 Compressor Fan Blade 1
15 2090-0059 Power Switch 1
16 2043-0120 Plastic Knob, Outlet, Red 1
17 2043-0100 Plastic Knob, Inlet, Blue 1
18 2043-0110 Plastic Knob, Black 1
- - 2090-0217 Instruction Manual 1
- -
2090-0217 Rev 6 31
2090-0091 80% Tank Full Shutoff Kit (Optional)
Page 32
Figure 10. Stinger Exploded View
32 2090-0217 Rev 6
Page 33
Compressor Parts List
See exploded view of compressor in Figure 11.
Part No. Item Description Qty
2051-1900 4 Screw, Machine, M5 x 10MM 1
2081-0310 5 Piston Cup Seal Retainer 1
2043-0020 6 Piston Cup Seal 1
2081-0270 7 Piston 1
2081-0400 8 Piston Journal Bearing 1
2081-0260 9 Crank 1
2077-0940 10 Crankcase Cover Gasket 1
2081-0390 *13 Shim, 0.002" 1
2081-0420 *14 Shim, 0.003" 1
2081-0430 *15 Shim, 0.005" 1
2077-0950 16 O-Ring, #026 1
2081-0290 17 Cylinder 1
2090-0039 18 Valve Plate Assembly 1
2081-0280 19 Cylinder Head 1
2051-1910 20 Screw, Cap, M5 x 50MM 4
2090-0040 21 Motor Brushes 2
2090-0042 - -
*Any or all of these shims may be used.
Compressor Rebuild Kit
Includes Items 4, 5, 6, 16, 18
1
2090-0217 Rev 6 33
Page 34
34 2090-0217 Rev 6
Figure 11. Compressor Exploded View
Page 35
ECLARATION OF CONFORMITY
D
The manufacturer of the products
covered by this declaration:
Year conformity is declared: 2009
Product(s): Refrigerant Recovery Machine
Model(s): Stinger
The undersigned hereby declares that the above referenced products are in conformity
with the provisions of the following standard(s) and is in accordance with the following
directive(s).
Standard(s):
General EMC
EN 61326-1:2006
Requirements
Bacharach, Inc.
621 Hunt Valley Circle
New Kensington, PA 15068
Electrical equipment for measurement,
control, and laboratory use
Directive(s):
2004/108/EC EMC Directive
Signature:
Name: Doug Keeports
Title: VP of Product Development
Date: 23 August 2010
The technical documentation file required by this directive is maintained at the
2090-0217 Rev 6 35
corporate headquarters of Bacharach, Inc.
Page 36
621 Hunt Valley Circle, New Kensington, Pennsylvania 15068
Phone: 724-334--800-736--334-5001
!"-mail: help@MyBacharach.com
36 2090-0217 Rev 6
World Headquarters
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