Robinair 34100 User Manual
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Operating
M
anual
Automatic A/C Charging Station
For Refrigerant R-134a Systems Only!
Safety
Precautions
This equipment is intended for professional use only. The service technician should be familiar
with proper servicing of air conditioning systems as well as the dangers and use of refrigerants and
pressurized components before using the equipment.
!
▲ WARNING ▲
Always wear safety goggles when working with refrigerants. Contact with refrigerants can cause
injury.
Connecting hoses to the wrong ports may cause personal injury or may damage the equipment. Check the operating manual for your air conditioning system for the correct hookup.
Disconnect hoses with extreme caution! All hoses may contain liquid refrigerant under pressure.
Contact with refrigerant can cause injury. Wear proper, personal protective equipment, including safety
goggles. Point the disconnected end of a hose away from you and anyone who is nearby.
Use only with refrigerant type R-134a! Cross-contamination with other refrigerant types will cause
severe damage to the A/C system and to service tools and equipment. Do not mix refrigerant types
through a system or in the same container!
Avoid breathing A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose
and throat. To remove R-134a from the A/C system, use service equipment certified to meet the
requirements of SAE J2210 (R-134a recycling equipment). If accidental system discharge occurs,
ventilate work area before resuming service.
HFC-134a service equipment or vehicle A/C systems should not be pressure tested or leak
tested with compressed air. Some mixtures of air/HFC-134a have been shown to be combustible at
elevated pressures. These mixtures are potentially dangerous and may result in fire or explosion
causing injury or property damage. Additional health and safety information may be obtained from
refrigerant and lubricant manufacturers.
Improper use or connections may cause electrical shock hazards. Read and follow these
instructions carefully and take all necessary precautions to avoid electrical shock hazards. Before
energizing circuits, be sure that all associated devices are properly grounded. Unplug the station from
the power source before removing the control box.
!
Limited
Warranty
This product is warranted to be free from
defects in workmanship, materials, and components for a period of one year from date of
purchase. All parts and service center labor
required to repair defective products covered
under the warranty will be at no charge. The
following restrictions apply:
1. The limited warranty applies to the original
purchaser only.
2. The warranty applies to the product in
normal usage situations only, as described
in the Operating Manual. The product
must also be serviced and maintained as
specified.
3. If the product fails, it will be repaired or
replaced at the option of the manufacturer.
4. Transportation charges for warranty service
will be reimbursed by the factory upon
verification of the warranty claim and
submission of a freight bill for normal
ground service. Approval from Robinair
must be obtained prior to shipping to either
an authorized service center or the factory.
5. Warranty service claims are subject to
factory inspection for product defect(s).
6. Robinair shall not be responsible for any
additional costs associated with a product
failure including, but not limited to, loss of
work time, loss of refrigerant, and nonauthorized shipping and/or labor charges.
7. All warranty service claims must be made
within the specified warranty period. Proofof-purchase date must be supplied to the
manufacturer.
8. Use of Robinair charging equipment with
non-authorized refrigerants will void our
warranty. Authorized refrigerants are listed
on the equipment or are available through
our Technical Service Department.
This Limited Warranty does not apply if:
• The product, or product part, is broken by
accident.
• The product is misused, tampered with, or
modified.
• The product is used for recharging any
substance other than the specified refrigerant type.
Introduction ................................................................................................................... 2
Set Up Instructions ....................................................................................................... 2
Preparing the Vacuum Pump .................................................................................. 2
Diagram of Vacuum Pump Components ................................................................. 2
Installing a Refrigerant Tank .................................................................................. 3
Diagram of Disposable Tank Installation............................................................... 3
Diagram of Refillable Tank Installation ................................................................. 4
Removing an Empty Tank........................................................................................ 4
Using the Heater Blanket ........................................................................................ 4
Operating Procedures ................................................................................................... 5
Summary Chart of Operating Procedures ............................................................... 5
To Attach Hoses to the System ................................................................................ 5
To Diagnose System Problems ................................................................................. 5
To Add Refrigerant to Partially Charged Systems ................................................. 5
To Recover Refrigerant............................................................................................. 6
To Program Vacuum/Charging Cycle...................................................................... 6
To Use Automatic Vacuum/Charging Cycle............................................................ 6
To Check Final System Operation........................................................................... 7
To Disconnect the System ........................................................................................ 7
Maintenance Instructions ............................................................................................. 7
Storing the Station.................................................................................................... 7
Maintaining the Vacuum Pump ............................................................................... 7
Checking the Scale Accuracy ................................................................................... 7
Calibrating the Scale ................................................................................................ 8
Using Manual Diagnostics ....................................................................................... 8
Additional Operating Guidelines ................................................................................. 9
How to Use the Controls........................................................................................... 9
Diagram of Control Components ............................................................................. 9
Using the Keypad...................................................................................................... 10
Diagram of Keypad ................................................................................................... 10
Using the Display Panel ........................................................................................... 10
Quick Reference Chart .............................................................................................. 11
Diagram of Display Panel ........................................................................................ 11
Table of
Contents
Replacement Parts List................................................................................................. 12
Troubleshooting Tips ..................................................................................................... 13
Temperature/Pressure Relation Chart ........................................................................ 14
Conversion Chart .......................................................................................................... 14
A/C Air conditioning
System The A/C system being serviced
Tank The refrigerant supply tank
Station The automatic A/C charging station
U.S. Patent Nos.: 4,523,897; 5,005,375; 4,688,388 RE: 33,212
Other U.S. and Foreign Patents Pending
R-134a Smart Cart® Automatic A/C Charging Station
Glossary of
Terms
1
Introduction
This automatic A/C charging station is
designed with you in mind. It is accurate,
easy to program, and simple to use.
Before using the station, read and
understand all instructions and warnings
in this operating manual.
The 220V 50Hz models have some
operating exceptions, which are noted in
this operating manual.
In addition, all measurements are metric
and the manifold is equipped with kPa/
bar gauges showing temperature in
degrees Celsius.
Before operating the 220V 50Hz model,
plug the short power cord from the upper
control box into the outlet on the lower
power box. Plug the main power cord
into a 220V 50Hz power source that is
free of transients and electrical noise.
Set Up
Instructions
To set up the station for operation, you
need to prepare the vacuum pump and
install the refrigerant tank.
PREPARING THE VACUUM PUMP
The VacuMaster® vacuum pump is
shipped without oil in the reservoir.
Before starting the station, you must
fill the pump with oil and remove the
exhaust plug from the end of the
pump’s handle.
Note: The Iso-ValveTM isolation valve on
the side of the pump must remain open
(the position shown in the illustration)
for the station to operate.
CAUTION! Do not attempt to run the
vacuum pump when the manifold gauge
set shows pressure readings above 5 psi.
In the vacuum mode, positive pressure
will:
• High pressure — not allow the
vacuum solenoids to open.
• Low pressure — blow oil out of the
pump handle when the vacuum
solenoids do open.
Running the vacuum pump with positive
pressure locks high pressure between the
two solenoids and prevents operation of
the pump.
Follow these procedures to prepare the
vacuum pump for use with the charging
station.
1. Remove and discard the exhaust plug
from the end of the pump’s handle.
2. Remove and retain the black plug on
the oil fill port.
3. Pour vacuum pump oil into the oil fill
port until oil appears in the sight
glass on the reservoir. The approximate oil capacity of the pump is 13
ounces (384 milliliters).
4. Close both the high side and low side
valves on the station’s manifold.
2
EXHAUST PLUG
ISO-VALVEˇ
OIL FILL PORT
SIGHT
GLASS
OIL
DRAIN
VALVE
Diagram of Vacuum Pump Components
© 1991 Robinair Division, SPX Corporation
5. Plug the station into the proper
voltage outlet, and turn on the MAIN
POWER switch.
6. Simultaneously press the ENTER
and zero keys on the keypad to access
the manual diagnostic mode.
7. Press “1” on the keypad to start the
pump.
8. While the pump is running, add
enough vacuum pump oil so that the
oil level is even with the line on the
reservoir’s sight glass.
9. Press “1” or the RESET CYCLE key
on the keypad to stop the pump.
10. Replace the black plug on the oil fill
port.
IMPORTANT! For maximum performance, change the vacuum pump oil
frequently (approximately after every
four hours of running time). We recommend using our Premium High Vacuum
Pump Oil; it is specifically blended to
maintain maximum viscosity at normal
running temperatures and to improve
cold weather starts (see the “Replacement Parts List”).
Read and follow the detailed instructions
in the Vacu-Master
®
Vacuum Pump
Operating Manual. You do not need to
return the warranty registration card
contained in the Vacu-Master® Vacuum
Pump Operating Manual — return only
the warranty registration card attached
to the station to validate your warranty.
INSTALLING A REFRIGERANT TANK
Follow these steps to install a refrigerant
tank on the charging station.
▲ WARNING ▲
! !
Always wear safety goggles when
working with refrigerants. Read and
follow all warnings at the beginning of
this manual before operating the unit.
Connecting hoses to the wrong ports
may cause personal injury or may
damage the equipment. Read and follow
all warnings at the beginning of this
manual before operating the unit.
Use only with refrigerant type R-134a!
Cross-contamination with other refrigerant types will cause severe damage to the
station and to tools and equipment.
Do not mix refrigerant types through a
system or in the same container!
1. Attach the station’s yellow charging
hose to a full refrigerant tank, as
follows:
•Disposable tanks — Connect the
yellow hose, open the tank’s valve,
and place the inverted tank (with its
valve down) on the scale platform.
Be sure to center the tank over the
stud welding point. Use only tanks
designed for use with R-134a, including Acme threads on the fittings.
(Continued)
Set Up
Instructions
Dual Purpose
Hold-Down
Bracket
Bulk Refrigerant Tank
Diagram of Disposable Tank Installation
R-134a Smart Cart® Automatic A/C Charging Station
(Not Included)
Valve Handle
Yellow Hose To
Refrigerant
Solenoid
Valve
Tank
Ball
3
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