Robinair 34788NI, 34788NI-230, 34788NI-H Operating Manual
Operating Manual
Models: 34788NI, 34788NI-H,
34788NI-230
Recover, Recycle, Recharge Machine
for R-134a A/C Systems
Table of Contents
Safety Precautions ....................... 2
Explanation of Safety Signal Words ............... 2
Explanation of Safety Decals. . . . . . . . . . . . . . . . . . . . . 2
Protective Devices ............................. 4
Refrigerant Tank Test ........................... 4
Introduction ............................. 5
Technical Specications ........................ 5
Features .................................... 6
Control Panel Functions ........................ 8
Icon Legend .................................. 9
Setup Menu Functions. . . . . . . . . . . . . . . . . . . . . . . . . 10
Initial Setup ............................ 11
Unpack the Machine ...........................11
Unpack the Accessory Kit .......................11
Power Up the Machine .........................11
Select Language ............................. 12
Select Units ................................. 12
Set Date and Time ............................ 12
Edit Print Header ............................. 12
Service Vacuum .............................. 13
Select Oil Viscosity ......................... 13
Adjust Background Fill Target ................... 13
Tank Fill .................................... 13
Unit Activation ............................... 15
Operating Instructions ................... 16
Enter Service Data ........................... 16
Recover Refrigerant from a Vehicle. . . . . . . . . . . . . . . 17
Evacuate the Vehicle A/C System ................ 18
Flushing the Hoses ........................... 19
Recharge the Vehicle A/C System. . . . . . . . . . . . . . . . 20
Automatic Function ........................... 22
System Flush ................................ 23
Maintenance ............................25
Maintenance Schedule ........................ 25
Electrical Protection ........................... 26
Load Language .............................. 26
Adjust Background Fill Target ................... 27
Tank Fill .................................... 27
Filter Maintenance ............................ 28
Check Remaining Filter Capacity ............... 28
Replace the Filter ........................... 29
Calibration Check ............................ 30
Change Vacuum Pump Oil ..................... 31
Leak Check ................................. 32
Select Oil Viscosity ........................... 33
Edit Print Header ............................. 33
Replace Printer Paper ......................... 33
Install a Printer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
A/C Service Function ....................35
Replacement Parts ........................... 35
Glossary ................................... 35
Troubleshooting ........................ 36
Storage and Transportation of Equipment
Storage .................................... 39
Transportation of Equipment .................... 39
... 39
Disposal of Equipment ................... 40
Disposal of Recycled Materials .................. 40
Disposal of the Machine ....................... 40
Disposal of Batteries .......................... 40
1
Safety Precautions
Explanation of Safety Signal Words Used in this Manual
The safety signal word designates the degree, or level, of hazard seriousness.
DANGER: Indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.
WARNING: Indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided, could result in minor or
moderate injury.
CAUTION: Used without the safety alert symbol indicates a potentially hazardous situation which, if not
avoided, could result in property damage.
These safety messages cover situations Robinair is aware of. Robinair cannot know, evaluate, or advise as to
all possible hazards. The user must verify that conditions and procedures do not jeopardize personal safety.
Explanation of Safety Decals Used on the Machine
Carefully read the instructions.
Do not use in open air in case of rain or high humidity.
Wear gloves.
Wear protection goggles.
Alternating voltage.
Grounding protection.
Electrical shock hazard.
2
Safety Precautions
WARNING: To prevent personal injury,
ALLOW ONLY QUALIFIED PERSONNEL TO OPERATE THE MACHINE. Before operating the machine, read
and follow the instructions and warnings in this manual. The operator must be familiar with air conditioning
and refrigeration systems, refrigerants, and the dangers of pressurized components. If the operator cannot
read this manual, operating instructions and safety precautions must be read and discussed in the operator’s
native language.
USE THE MACHINE AS OUTLINED IN THIS MANUAL. Using the machine in a manner for which it was not
designed will compromise the machine and nullify the protections provided.
PRESSURIZED TANK CONTAINS LIQUID REFRIGERANT. Do not overll the internal storage vessel (ISV).
Overlling can cause explosion resulting in personal injury or death. Do not recover refrigerants into nonrellable
containers; use only type-approved rellable containers that have pressure relief valves.
HOSES CAN CONTAIN LIQUID REFRIGERANT UNDER PRESSURE. Contact with refrigerant can
cause personal injury, including blindness and frozen skin. Wear protective equipment, including
goggles and gloves. Disconnect hoses using extreme caution. Ensure the phase is complete before
disconnecting the machine to prevent the release of refrigeration to the atmosphere.
AVOID BREATHING A/C REFRIGERANT AND LUBRICANT VAPOR OR MIST. Exposure can irritate eyes, nose,
and throat. To remove refrigerant from the A/C system, use only equipment certied for the type of refrigerant
being removed. Use the unit in locations with mechanical ventilation that provides at least four air changes per
hour. If accidental system discharge occurs, ventilate the work area before resuming service.
DO NOT DISPERSE REFRIGERANT INTO THE ENVIRONMENT. Prevent the possible presence of refrigerant
in the working environment.
TO REDUCE THE RISK OF FIRE, do not use the machine in the vicinity of spilled or open containers of
gasoline or other ammable substances.
TO REDUCE THE RISK OF FIRE, do not use an extension cord
re. If an extension cord must be used, use the shortest possible cord with a minimum size of 14 AWG.
TO REDUCE THE RISK OF FIRE, do not use the machine in the vicinity of ames and hot surfaces
can decompose at high temperatures and free toxic substances to the environment that can be noxious to
the user.
TO REDUCE THE RISK OF FIRE, do not use the machine in environments containing explosive gases or vapors.
TO REDUCE THE RISK OF FIRE, do not use this machine in ATEX classied zones or areas. Protect the
machine from conditions that can cause electrical failure or other hazards relating to ambient interaction.
CAUTION—DO NOT PRESSURE TEST OR LEAK TEST EQUIPMENT AND/OR VEHICLE AIR CONDITIONING
SYSTEMS WITH COMPRESSED AIR. Mixtures of air and R-134a refrigerant can be combustible at elevated
pressures. These mixtures are potentially dangerous and can result in re or explosion causing personal injury
and/or property damage.
HIGH VOLTAGE ELECTRICITY INSIDE THE MACHINE HAS A RISK OF ELECTRICAL SHOCK. Exposure
can cause personal injury. Disconnect power before servicing the machine.
. An extension cord can overheat and cause
. Refrigerant
NEVER LEAVE THE MACHINE LIVE IF AN IMMEDIATE USE IS NOT SCHEDULED. Disconnect the electrical
supply before a long period of inactivity or before internal maintenance is performed.
DO NOT MODIFY THE PRESSURE RELIEF VALVE OR CHANGE THE CONTROL SYSTEM SETTINGS.
Using the machine in a manner for which it was not designed will compromise the machine and nullify the
protections provided.
Additional health and safety information can be obtained
from refrigerant and lubricant manufacturers.
3
Safety Precautions
CAUTION : To prevent equipment damage,
TO PREVENT CROSS-CONTAMINATION, USE THIS MACHINE WITH R-134A REFRIGERANT ONLY.
The machine is equipped with special connectors to recover, recycle, and recharge only R-134a refrigerant.
Do not attempt to adapt the machine for another refrigerant. Do not mix refrigerant types through a system
or in the same container; mixing of refrigerants will cause severe damage to the machine and the vehicle air
conditioning system.
DO NOT USE THIS MACHINE IN DIRECT SUNLIGHT. Position the machine far from heat sources, such as
direct sunlight, which can cause excessive temperatures. The use of this machine under normal environmental
conditions (10°C to 50°C) keeps pressures under reasonable limits.
DO NOT USE THIS MACHINE OUTDOORS DURING RAIN OR HIGH HUMIDITY. Protect the machine from
conditions that can cause electrical failure or other hazards relating to ambient interaction.
DO NOT USE THIS MACHINE IN AREAS WHERE THERE IS A RISK OF EXPLOSION.
SET UP THE MACHINE ON AN EVEN SURFACE AND UNDER SUFFICIENT LIGHTING. LOCK THE FRONT
WHEELS, AND DO NOT SUBJECT THE MACHINE TO VIBRATION.
TO AVOID CHEMICAL INCOMPATIBILITIES WITH THE INTERNAL COMPONENTS OF THE MACHINE,
USE ONLY OILS APPROVED BY THE VEHICLE MANUFACTURER. Problems resulting from the use of
non-approved oils will void the warranty.
Additional health and safety information can be obtained
from refrigerant and lubricant manufacturers.
Protective Devices
The machine is equipped with the following protective devices:
• Over pressure valves.
• A maximum pressure switch stops the compressor when excessive pressure is sensed.
WARNING: Tampering with these protective devices could result in serious injury.
Refrigerant Tank Test
Ofcial records and recurring tests necessary for pressurized instruments are governed by laws and/or national
regulations dependent upon the country where the refrigerant tank is used. The system manager is responsible
for compliance with laws, regulations, and technical rules. During normal service, refrigerant tanks do not
need maintenance. Refer to the Maintenance section of this manual for more information.
4
This machine is used on R-134a equipped vehicles and is
designed to be compatible with existing service equipment and
standard service procedures. This machine is a single-pass
system (i.e. refrigerant ows through a lter once) that meets
specications for recycled refrigerant. Follow recommended
service procedures for the containment of R-134a.
Note: Refrigerant systems require special oils. Refer to the A/C
system manufacturer’s service manual for oil specications.
Introduction
Technical Specications
Dimensions .................107 cm x 61 cm x 76 cm
Display
Filter
Humidity
Manometer
Maximum Pressure . . . . . . . . . . . . . . . . . 27 bar (390 PSI)
Noise
Nominal Voltage
Oil Bottle Capacity. . . . . . . . . . . . . . . . . . . .355 ml (12 oz)
Operating Temperature
Power Consumption
Vacuum Pump Free-Air Displacement
.......................1.5 CFM (42 L/m) @ 60 Hz
......................1.25 CFM (35 L/m) @ 50 Hz
Service Hoses
Tank Capacity
Weight
...........5 × 9 cm (4.3-in. diag) graphical LCD
...............................68 kg (150 lb)
.......32.2°C (90°F), 80% RH non-condensing
......................Ø 100 mm (3.9 in.)
.................................<70 dB(A)
34788NI, 34788NI-H ..................115V, 60 Hz
34788NI-230 .....................230V, 50/60 Hz
...10°C to 50°C (50°F to 122°F)
...................... 1380 VA
..................250 cm / SAE J2196
........................10 kg (22 lb)
.............................73 kg (161 lb)
5
Introduction
Features
3
2
1
4
5
6
7
8
9
10
11
12
13
14
6
Introduction
Item
No.
1 Oil Drain Bottle
2 Printer Cap
3 Low-side (blue) and High-side (red) Manifold Gauges
4 Graphic Display and Keypad
5
6 Vacuum Pump Oil Sight Glass
7 Vacuum Pump Oil Drain Fitting
8 Power Switch
9 Wheel Lock
10 Vacuum Pump Oil Fill Cap and Port
(detailed view shown without protective cover)
USB and SD Card Connections
Description
11
12 Service Hoses
13 Service Hose Storage Ports
14 Power Cord
(34788NI & 34788NI-230 models)
Oil Inject Bottle
7
Introduction
Control Panel Functions
ARROW UP highlights the previous item.
ARROW DOWN highlights the following item.
ARROW RIGHT scrolls to next screen.
ARROW LEFT scrolls to previous screen.
SELECTION ARROWS make a selection or answer a query.
Control Panel Keypad
8
Icon Legend
Introduction
AUTOMATIC ICON
Pressing the key under this icon
will enter the automatic refrigerant
recovery, vacuum, and charge process.
RECOVER ICON
Pressing the key under this icon will
enter the refrigerant recovery process.
VACUUM ICON
Pressing the key under this icon will
enter the system vacuum process.
CHARGE ICON
Pressing the key under this icon will
enter the refrigerant charge process.
NEXT/FORWARD ICON
Pressing the key under this icon will
proceed to additional menu selection
options, or proceed to an additional
step in a function or process.
BACK ICON
Pressing the key under this icon will
return to previously seen menu selection
options, or return to the previous screen
within a function or process.
HELP ICON
Pressing the key under this icon
will provide help and information
corresponding to the current screen and/
or function being viewed or performed.
DATABASE ICON
Pressing the key under this icon will enter
the vehicle database retrieval process.
SETUP MENU ICON
Pressing the key under this icon will
enter the Setup Menu.
YES/ACCEPT ICON
Pressing the key under this icon will accept any choices made on the current
screen and proceed to the next step of
the function.
NO/CLOSE ICON
Pressing the key under this icon will
reject any choices made on the current
screen and return to the previous step
of the function or the Main Menu.
RETRY ICON
Pressing the key under this icon will
retry the current process or function.
CHARGE PATH SELECTION ICON
Pressing the key under this icon will
toggle the desired path of refrigerant
charge between high side, low side,
and both side.
OIL INJECT BOTTLE SELECTION
ICON
Pressing the key under this icon will
toggle which bottle will be utilized to
inject oil during the subsequent charge.
(Applicable only on machines with
more than one oil inject bottle.)
ON/OFF ICON
Pressing the key under this icon will
toggle the highlighted function on or off
as desired.
BACKSPACE ICON
Pressing the key under this icon will
delete a text character to the left of the
current selection.
PAUSE ICON
Pressing the key under this icon will
pause the current process.
RESUME ICON
Pressing the key under this icon will
resume a process that has been paused.
PRINT ICON
Pressing the key under this icon will
print a summary corresponding to the
current completed process.
DELETE ICON
Pressing the key under this icon
will delete a selected entry from the
memory of the machine.
CHANGE UNITS ICONS
Pressing the key under one of
these icons will toggle the unit of
measurement for the current entry eld.
9
Introduction
Setup Menu Functions
Access the following functions by pressing the Menu key and selecting Setup.
Calibration Check
Use to verify internal scale calibration. Refer to
Calibration Check in the Maintenance section of this
user manual.
Edit Print Header
Programs information that will appear on the printout
each time a print function is used.
Filter Maintenance
The lter removes acid, particulates, and moisture from
the refrigerant. To meet requirements, it is mandatory
to replace the lter after 68 kg (150 lb) of refrigerant
has been ltered.
This menu item displays the lter capacity remaining
until the machine locks down and no longer functions.
Refer to Filter Maintenance in the Maintenance section.
Flush Hoses
Flushes residual oil from the machine’s service hoses
to prepare for service of next vehicle.
Production Menu
For Robinair production use only.
Pump Maintenance
Displays the amount of time remaining until the next
vacuum pump oil change is needed. For maximum
vacuum pump performance, change vacuum pump oil
every time the lter is replaced. Refer to the Change
Vacuum Pump Oil in the Maintenance section.
Refrigerant Management
Displays the amount of refrigerant recovered, charged,
and replenished (for the life of the machine), and
ltered since the last lter change.
Select Language
Select a language for screen prompts. English is the
default language.
Service Menu
For Robinair service center use only.
Select Units
Program the machine to display units of measure in
kilograms or pounds. The default display is kilograms.
Date and Time
Program the machine for current date and time.
System Flush
Provides a method of removing oil by forcing liquid
refrigerant through an A/C system or components of an
A/C system. After ushing, the refrigerant is recovered
by the machine and ltered by the recycling circuit.
System Information
Displays the revision level of the software in the
machine.
Tank Fill
Use this Setup Menu item to transfer refrigerant from
a source tank to the ISV. The tank ll value may be
adjusted up or down to suit the user’s needs. Refer
to Tank Fill in the Maintenance section.
Unit Activation
Failure to register and activate the machine within 30
days of initial startup will cause the machine to lock out
and no longer function. Select this Setup Menu item
and follow the prompts before the trial period expires.
View Service Data
Displays vehicle information that was entered into the
Enter Service Data screen. Vehicles are displayed by
date of service and VIN number. The database stores
25 VIN entries.
Hose Equalize
Use this Setup Menu item to recover refrigerant from
the service hoses back into the vehicle A/C system.
This item is useful after performing diagnostics which
do not require the need to recover the A/C system
into the RRR machine. The user will be prompted to
connect the low side service hose to the appropriate
port and to start the vehicle’s A/C system on max.
10
Unpack the Machine
1. Remove the bandings from the box.
2. Remove the top carton infold, the molded pulp tray, and
the angle boards.
3. Remove the sleeve from the bottom carton infold.
4. Gently roll the unit forward and off the pallet, avoiding
any sudden shocks to the machine.
Unpack the Accessory Kit
Unpack the accessory kit from the box, and remove the
plastic packaging.
Calibration Check
Weight
533 g (1.18 lb)
Initial Setup
WARNING: To prevent personal
injury while working with refrigerant,
read and follow the instructions
and warnings in this manual, and
wear protective equipment such as
goggles and gloves.
Pouch containing the user manual, warranty card to be
lled out and mailed, Safety Data Sheets (SDSs), and
service center list.
Power Up the Machine
1. Unwind the power cord from the handle, and plug it into
a correct voltage, grounded outlet.
2. Position the machine so the plug and the power switch
are of easy access for the operator. Verify the fan vents
on the rear of the machine are not obstructed.
3. Lock the front wheels.
4. Toggle the power switch on the control panel to turn the
machine ON.
The machine launches into the initial Setup mode.
11
Initial Setup
Select Language
The operator selects the language for the screen prompt
displays. English is the default language.
1. Use the UP or DOWN arrow key to toggle through the
available languages one line at a time.
2. Select to set the selected language.
Note: To update an existing language or to add a new language,
refer to Load Language in the Maintenance section of this
manual.
Select Units
The operator sets the display for units of measure. Metric is
the default.
3. Use the ARROW UP or ARROW DOWN key to toggle
Imperial or Metric units.
4. Select to choose the displayed unit of measure.
Set Date and Time
Use the arrow keys to move the cursor. Use the keypad to
modify the information displayed.
5. Use the ARROW UP and ARROW DOWN keys to select
which item to change: day, month, year, or time. Select
to toggle between AM and PM.
6. Use the multi-tap interface on the numeric keypad to
modify the information.
7. Select to save.
Edit Print Header
This machine has the capability to store recovery, vacuum,
charge, and ush information for up to 25 vehicles. The
information loaded into Edit Print Header will appear on each
printout.
1. Enter text by using the arrows and the multi-tap interface
on the numeric keypad:
• ARROW LEFT and key act as backspace key.
• ARROW RIGHT moves the cursor to the right.
• 0 (ZERO) acts as a spacebar when pressed twice.
• ARROW UP and DOWN navigate between the rows.
2. Select to save/exit the function; select to return
to the previous header without saving data.
12
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