Bacharach Refrigerant Recovery System 3600 User manual

Refrigerant Recovery System
Model 3600
Part No. 2000-3600
Operation & Maintenance Manual
Instruction 2079-0140
Rev 2 - December 2012
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.
BEFORE HANDLING REFRIGERANTS, READ THE MATERIAL SAFETY
DATA SHEET FROM THE REFRIGERANT MANUFACTURER.

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Table of Contents
CHAPTER 1: INTRODUCTION ................................................................................................................................. 3
1.1. OVERVIEW ........................................................................................................................................................3
1.2. SPECIFICATIONS..................................................................................................................................................3
1.3. FEATURES .........................................................................................................................................................4
CHAPTER 2: SAFETY............................................................................................................................................... 5
2.1. GENERAL SAFETY INSTRUCTIONS............................................................................................................................5
2.2. OPERATIONAL SAFETY .........................................................................................................................................6
CHAPTER 3: FEATURES .......................................................................................................................................... 7
3.1. LOCATION AND DESCRIPTION OF UNIT FEATURES......................................................................................................7
3.2. LED DISPLAY .....................................................................................................................................................8
CHAPTER 4: RECOVERY.......................................................................................................................................... 9
4.1. HELPFUL HINTS FOR RECOVERING R-410A..............................................................................................................9
4.2. VAPOR/LIQUID RECOVERY PROCEDURES .................................................................................................................9
4.3. VAPOR RECOVERY HOSE CONNECTION .................................................................................................................11
4.4. LIQUID PUSH-PULL RECOVERY GENERAL INFORMATION ...........................................................................................12
4.5. LIQUID RECOVERY PROCEDURES ..........................................................................................................................13
4.6. LIQUID PUSH-PULL HOSE CONNECTIONS...............................................................................................................14
4.7. PUMP DOWN OPERATIONS ................................................................................................................................15
4.8. DOT RECOVERY CYLINDER SAFETY .......................................................................................................................16
CHAPTER 5: TROUBLESHOOTING......................................................................................................................... 17
CHAPTER 6: ELECTRICAL SCHEMATIC ................................................................................................................... 18
CHAPTER 7: REPLACEMENT PARTS ...................................................................................................................... 19

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CHAPTER 1: INTRODUCTION
1.1. Overview
Congratulations on your purchase of the Bacharach Model 3600 high performance oilless recovery
system. Bacharach has worked hard to make the Model 3600 the highest performing, most portable and
easiest to use recovery system on the market. We are committed to your complete satisfaction!
Please note that Bacharach requires that a filter be used on the inlet hose coming from the system being
serviced in order to protect the compressor from particulate.
A standard filter or filter dryer is suggested. The compressor warranty will be voided if it is determined that
a filter was not used during the operation of this equipment.
WARNING: Before starting the 3600 recovery unit, you MUST OPEN the outlet port on the unit
and open the port to the recovery tank. Read the entire operating instruction
manual before use. Failure to open the outlet port will cause permanent damage to
the unit and void the warranty.
WARNING: You must use a DOT recovery cylinder approved for use with R-410A refrigerant.
This recovery system is equipped with a high-pressure shutoff switch set to turn the
unit off at 550 psi. Using any other cylinder may cause the pressure in the recovery
cylinder to exceed the cylinder’s pressure rating.
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.
1.2. Specifications
Category Description
Model Model 3600
Description Portable Commercial Oilless Recovery System
Refrigerants R12, R-22, R-134a, R-500, R-502, R-410AHP/MP Blends
Power Source 120V AC 60 Hz
Wattage/Amperes 800 W / 8.0 A max
Compressor ½ HP High Performance Oilless
High Pressure Shutoff 550 psi
Dimensions (H x W x D) 12.0" x 13" x 7.5"
Weight 35 Lbs.

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Refrigerant Recovery Rates Certified per AHRI 740-95 & 740-98
Refrigerant Liquid Rate Liquid Push-Pull Rate Vapor Rate
R-22 4.96 lb/min
2.25 kg/min 13.01 lb/min 5.90 kg/min 0.37 lb/min 0.17 kg/min
R-134A 3.86 lb/min
1.75 kg/min 11.84 lb/min 5.37 kg/min 0.29 lb/min 0.13 kg/min
R-410A 3.31 lb/min
1.50 kg/min 15.70 lb/min 7.12 kg/min 0.42 lb/min 0.19 kg/min
1.3. Features
•Designed specifically for the new R-410A blend that has much higher vapor pressures.
•New oilless compressor technology that is QUIETER, FASTER, AND LIGHTER than current
products on the market.
•When used properly, tolerates liquid during vapor recovery operations with no compressor
damage.
•Extremely easy to operate.
•Extra large condensing ensures high recovery rates even on the hottest days.
•Self-purging valve completely purges the condenser and tubing, eliminating cross contamination
when switching between refrigerants.
•Solid state LED status display keeps the operator informed of the operational status of the unit.
The following situations are monitored: High Pressure Shutoff, Recovery Cylinder Full Shutoff (If
option is installed), Automatic Vacuum Shutoff, and System Operating.
•Suction and discharge gauges eliminate the need for a manifold gauge set.
•Inlet and outlet ball valves provide full refrigerant flow and positive shutoff.
•Automatic vacuum shutoff at 13” HG vacuum.
•Automatic high-pressure shutoff at 550 psi.
•Rugged heavy-duty steel construction with epoxy powder coating for long life.
•Options include: Deluxe carrying case to protect the 3600 from damage during transport,
Automatic 80% tank full shutoff.
Specifications are subject to change without notice.

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CHAPTER 2: SAFETY
2.1. General Safety Instructions
1. KNOW YOUR EQUIPMENT
Read and understand the operation manual and labels affixed to the unit. Learn its application and
limitations as well as the specific potential hazards of your equipment.
2. GROUND ALL EQUIPMENT
This unit is equipped with an approved three pronged grounded power cord and plug. The green wire
is the ground wire and should never be connected to a live terminal.
3. USE THE PROPER EXTENSION CORD
Use the following guide for choosing the proper extension cord:
16 gauge cord- maximum length 25 feet
14 gauge cord- maximum length 50 feet
12 gauge cord- maximum length 100 feet
4. AVOID DANGEROUS ENVIRONMENTS
Do not use this unit in damp or wet locations or expose it to rain. Secure unit when working above
floor level. This equipment should be used in a location with mechanical ventilation that provides at
least four air changes per hour or the equipment should be located at least 18 inches above the floor.
This equipment should not be used in the vicinity of spilled or open containers of flammable materials.
5. DISCONNECT UNIT BEFORE SERVICING
Electrical shock hazard may be present when the unit is disassembled.
6. AVOID ACCIDENTAL STARTING
Make sure the system switch is in the OFF position before connecting electrical devices.
7. REPAIR DAMAGED PARTS
Do not operate the unit with a defective part. Repair unit to proper operating conditions.
8. USE RECOMMENDED ACCESSORIES
Follow the instructions that accompany all accessories. Improper use of accessories may damage
the equipment or create a hazard.
9. 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.
10. USE THE PROPER RECOVERY CYLINDER RATED FOR USE WITH R-410A
WARNING: You must use the proper DOT approved recovery cylinder with the Model 3600. This
recovery system is equipped with a high-pressure shutoff switch set to turn the unit off at 550 psi.
Using any other cylinder may cause the pressure in the recovery cylinder to exceed the cylinder’s
pressure rating.

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2.2. 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 death may occur without warning. Vapor reduces 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.
•Do not apply open flame or heat unit above 125°F.
•Do not allow refrigerants to contact open flame. Decomposition will occur.
FIRST AID: If high concentrations of refrigerant vapors are inhaled, immediately remove 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 unit, and other vessels containing
refrigerants should be handled at all times as if under high pressure.

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CHAPTER 3: FEATURES
3.1. Location and Description of Unit Features
# Component Description
1 Purge Ball
Valve This valve determines what function the Model
3600 performs. This
valve is UP during
recovery operations
and DOWN for purging
and liquid push-pull
operations.
2 Inlet Port
Ball Valve
Opens or closes the
inlet port. It is pointing
UP (open) for all
recovery operations
and points DOWN for
purging operations.
This valve is also used
to throttle back the
liquid intake when a
knocking sound is
heard.
3 LED Status
Display See the description on the following page.
4 System
Switch When in the ON position, this switch starts the recovery operation by turning the compressor on.
5 Outlet Port
Ball Valve Opens or closes the outlet port. It points DOWN when it is open and to the left when CLOSED.
6 Inlet Port Refrigerant hose connection for incoming refrigerant vapors.
7 Outlet Port Refrigerant hose connection for outgoing refrigerant.
8 Outlet
Pressure
Gauge
Displays the outlet/discharge pressure.
9 Inlet
Pressure
Gauge
Displays the inlet/suction pressure of the system being evacuated.
Umbilical
Cord -
Optional
Accessory
(Not shown)
This optional accessory connects to the recovery cylinder overfill sensor and
automatically shuts the unit off when the recovery cylinder reaches the 80% liquid
fill limit.
NOTE: If the Model 3600 is equipped with an 80% shutoff cord, it will not work
unless it is not connected to a DOT recovery cylinder with a compatible level float
switch. If the recovery cylinder does not have a float switch, a shorting cap must
be installed in order to operate the system.
Compressor
Circuit
Breaker (Not
shown)
Protects against high amperage. Located on the left side of the machine.

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3.2. LED Display
LED Meaning Explanation
Green Normal Operation Indicates that the power switch is ON and the compressor is
running.
Red High Pressure
Condition Indicates that there is a high pressure condition that must be corrected. The internal high pressure switch activates at 550 psi.
Red Tank Full Indicates that the recovery cylinder is full (if the Automatic 80%
Tank Full Shutoff Option is installed).

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CHAPTER 4: RECOVERY
4.1. Helpful Hints for Recovering R-410A
R-410A has been designated by the EPA as a “very-high-pressure” refrigerant. Because of its higher
vapor pressure, recovering R-410A has some unique challenges. The higher vapor pressure requires
more work from the compressor, resulting in higher temperatures and increased wear on moving
compressor parts.
In order to reduce the affects of these conditions, Bacharach recommends the following:
•Whenever possible, cool your recovery tank with ice or water. This keeps the compressor
discharge pressures lower, which will result in faster recovery rates and longer compressor
life.
•Avoid recovering large amounts of R-410A at one time. Allow the recovery unit and cylinder
to cool before starting the next recovery job.
•Always purge the machine completely when switching from R410a and back to prevent cross
contamination.
Following these simple hints will improve both recovery performance and compressor life.
4.2. Vapor/Liquid Recovery Procedures
Step Description
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, the unit,
and A/C system as shown in Figure 1. NOTE: You must use an external filter drier in the
suction line in order to meet the conditions of the unit warranty. Caution: If the 80% shutoff
cord is not used, a scale must be used to monitor the refrigerant level in the recovery
cylinder.
NOTE: Although the 3600 was designed to handle liquid slugging, pumping large amounts of
liquid over extended periods of time will reduce the life of the compressor. If large amounts of
liquid are present, it is recommended that you use the liquid push - pull method of recovery
prior to vapor recovery operations. (See Figures 3 & 4).
3 Place the inlet and purge ball valves in the “CLOSED” position and the outlet valve is in
the “OPEN” position. Open the DOT recovery tank liquid valve. (See Figure 2).
4 Turn the system switch to the “ON” position. The LED status display will be green.
5 Regulate the inlet port ball valve when liquid refrigerant is present.
WARNING: A “knocking” sound coming from the compressor indicates too much liquid is
entering the compressor. The inlet ball valve must be regulated as shown in the
shaded region until this knocking sound stops, otherwise compressor damage
could occur. Pumping liquid when the compressor is knocking will damage the
compressor and will reduce the compressor life and will void the compressor
warranty.

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Step Description
6 Monitor the LED status display. The unit will shut off automatically when the proper vacuum
level is achieved and the status display LED will turn off.
LED Description
Green
Indicates that the power switch is ON and the compressor is running.
If the green LED is off, this indicates that the unit has shut down because
the system being evacuated has reached 13" HG. (the evacuation is
complete). Check the suction pressure to verify that the system being
evacuated is down to at least 13" HG vacuum. Turn the system switch
to the OFF position. Wait 5 minutes. If the inlet pressure rises above 0
psig. Repeat steps 3-6. If the inlet pressure remains below 0 psig, close
all valves and disconnect the hose from the A/C system.
NOTE: A small amount of inlet pressure may be needed to reset the
vacuum switch, this is normal.
Red (a) Indicates that there is a high-pressure condition that must be
corrected. Check for restrictions or a full recovery tank. Correct
the problem and turn the system switch OFF to reset the system.
Repeat steps 3-6.
(b) Indicates that the recovery tank is full (if the 80% automatic shutoff
option is installed). Change the recovery tank and repeat steps
3-6.
7 Purge the system by positioning the inlet and purge ball valve in the “PURGE” position
(both pointing DOWN). This should be done with the unit off. If the valves are turned while
the unit is running, the system may shut off either on high-pressure or vacuum. If the unit is
manually or automatically turned off before the evacuation is complete, repeat steps 3-7.
NOTE: If the circuit breaker trips, wait 5 seconds, reset circuit breaker and go to step 3. If
the compressor thermal overload trips, wait 16 to 30 minutes before restarting.