Robinair 34788NI, 34788NI-230, 34788NI-H Operating Manual

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Page 1

Operating Manual

Models: 34788NI, 34788NI-H,

34788NI-230

Recover, Recycle, Recharge Machine

for R-134a A/C Systems

Page 2

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 Specications ........................ 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

Page 3

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.

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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 overll the internal storage vessel (ISV). Overlling can cause explosion resulting in personal injury or death. Do not recover refrigerants into nonrellable containers; use only type-approved rellable 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 certied 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 classied 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.

Page 5

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

Ofcial 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.

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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 specications 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 specications.

Introduction

Technical Specications

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)

Page 7

Introduction

Features

Page 8

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

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

12 Service Hoses

13 Service Hose Storage Ports

14 Power Cord

(34788NI & 34788NI-230 models)

Oil Inject Bottle

Page 9

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

Page 10

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.

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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.

Page 12

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.

Page 13

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.

Page 14

Service Vacuum

At this point the machine clears its internal plumbing before proceeding with setup.

1. Check the vacuum pump oil level sight glass and verify

the oil level is at the center of the sight glass.

2. When prompted, connect the service hoses from the

machine to their storage ports as shown in Figure 1. Select to continue.

3. The machine enters a 5-minute vacuum and will automatically

enter the next set-up process when complete.

Select Oil Viscosity

(N/A for 34788NI-H)

The oil inject functionality in this machine is automatic and timing based. The viscosity of the oil being injected signicantly affects the accuracy.

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.

1. Using the arrow keys, highlight your desired PAG oil

viscosity (46, 100, 125, or 150). Once highlighted, select

to accept.

2. The unit is now ready to accurately inject the chosen oil.

Adjust Background Fill Target

This machine possesses a background tank ll feature. An external refrigerant storage vessel can be uidly connected to the machine (using the black tank ll hose) for a continuous topping off of the internal storage vessel. Drawing from the refrigerant within the connected external storage vessel, the machine will periodically charge the ISV tank to the desired ll target.

Using the arrows and the numeric keypad, enter the desired ll target (default amount is 4.54 kg).

Tank Fill

This procedure transfers refrigerant from a source tank to the internal storage vessel (ISV) in the machine. The maximum capacity of the ISV is 10 kg (22 lb). Use arrow keys to move the cursor; use the keypad to enter a value.

1. The machine displays elds for desired tank ll amount,

charge capacity, and the amount of recoverable refrigerant (recover capacity) within the internal storage vessel. Enter the desired tank ll amount.

Service Hoses

Connected to

Storage Ports

Figure 1

Note:

Charge Capacity: The amount of refrigerant in the ISV that can be charged into a vehicle A/C system.

Recover Capacity: The amount of additional refrigerant that could be recovered into the ISV.

Note: Add at least 3.6 kg of refrigerant to ensure enough is available for charging.

Page 15

Initial Setup

2. Connect the tank ll (black) hose to the liquid connector on the source tank.

3. Open the source tank valve.

4. Position the source tank in such a way that liquid refrigerant is supplied to the connection.

5. Select to start the tank ll process. The machine begins lling the internal storage vessel (ISV). Add at least 3.6 kg of refrigerant to ensure enough is available for charging. This process takes 15–20 minutes.

6. The machine stops when the designated amount of refrigerant has been transferred to the ISV or when the source tank is empty. Follow the messages on the display.

7. Close the source tank valve.

8. Select to return to the Setup Menu.

The machine is ready for operation.

Note:

• There is no need to calibrate the scale; it is calibrated at the factory.

• After the tank ll process is complete, the display does not show the same amount as the programmed ll level.

The display shows the amount of refrigerant that is available for charging, which is approximately 0.67 kg (1.4 lb) less than the total amount of refrigerant in the tank.

Page 16

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.

1. Select Unit Activation from the Setup Menu. The

machine displays

XX Days Left on Trial Period to activate unit. Activate Now?

2. Select to start the activation process. The machine

displays

Product Activation

Personal product code: XXXXXXXXXXX

Initial Setup

Enter code: XXXXXXXXXXXX

3. Open a web browser on a personal computer and

enter https://register.servicesolutionsportal.com.

4. Enter the user name and password, and log in to the

website.

Note: If a rst-time user, select REGISTER to create

a user name and password.

5. On the personal computer, enter the Personal Product

Code of the machine into the Product Activation key box on the website to receive an activation code.

6. On the machine, enter the activation code into the

correct eld. Note: Enter the code exactly as received. Capitalization is required.

7. Record the activation code on a piece of paper and

le it in a secure place. Select

8. The machine displays

Activation successful.

Select . The machine has been activated.

Page 17

Operating Instructions

Enter Service Data

After selecting any service function, information about the vehicle may be entered into and stored in the machine’s database.

The machine displays

Enter service data new

1. Select to enter a new record, or scroll to select a previously serviced vehicle and then select . The highlighted selection will be in red. The machine displays

Enter service data VIN: _____________________________ Mileage: _______________________ Make: ___________________________ Model: _________________________

2. Use the arrow keys to move between rows and the multitap keypad to enter text.

Information entered on this screen is stored by date and vehicle identication number (VIN). The database stores the latest 25 entries, with the most recent at the top of the list.

The information will also appear on service summary printouts.

Page 18

Operating Instructions

Recover Refrigerant from a Vehicle

1. Empty the oil drain bottle before starting a recovery.

Remove the oil drain bottle from the machine by pulling the bottle straight down—do not use a twisting or rocking motion. Reinstall the oil drain bottle. See Figure 2.

2. Connect the high-side (red) and low-side (blue) service

hoses to the vehicle A/C system.

3. Open the coupler valves on the hoses by turning the

collars clockwise.

4. Select RECOVER from the MAIN MENU.

5. The machine will enter the service data entry form. Enter

all applicable data and select to continue.

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.

The machine begins the recovery process. A clicking noise indicates the solenoid is opening and closing — this is normal.

The machine runs a self-clearing cycle to clear any internal refrigerant from its internal plumbing.

System recovery begins and includes a timed vacuum, deep recovery process.

After recovery, the machine will perform an oil drain, which may require up to 90 seconds to complete.

6. After the oil drain is complete, a summary is displayed

showing the total amount of refrigerant recovered. The user is prompted to “Check Oil Drain Bottle” to note amount of oil drained. Recovery information can be printed by selecting printer.

7. Select to return to the Main Menu.

Note: The displayed recovered weight can vary depending on ambient conditions and should not be used as an indicator of scale accuracy.

Note: The amount of oil that was removed from the A/C system is the amount of new oil that should be charged into the A/C system after evacuation is complete.

on machines equipped with a

Oil Drain

Bottle

• Use only new oil to replace the oil removed during the recycling process.

• Dispose of used oil according to government regulations.

Figure 2

Page 19

Operating Instructions

Evacuate the Vehicle A/C System

1. Connect the service hoses to the vehicle’s service ports.

2. Open the service hose coupler valves by turning the collars clockwise.

3. Select VACUUM from the MAIN MENU.

4. Select Vacuum Leak Check, if desired, to automatically perform a 5-minute pressure rise leak check after the vacuum.

5. Select to accept the 10-minute default evacuation time, or enter a desired vacuum time using the number keys.

Note: The vacuum process will halt if pressure rises above .35 bar (5 psi). Recover refrigerant before proceeding.

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.

The machine pulls a vacuum on the A/C system for the programmed amount of time.

Vacuum information can be printed by selecting on machines equipped with a printer.

6. Select to return to the Main Menu.

Page 20

Operating Instructions

Flushing the Hoses

If the next vehicle to be serviced contains a different type of oil than the previous vehicle serviced, it is recommended the service hoses be ushed of residual oil to prevent contamination.

1. Select FLUSH HOSES from the SETUP MENU. The

machine displays

Connect service hoses to storage ports and open coupler valves.

2. Connect the service hoses to the machine’s storage port

connections as shown in Figure 3.

3. Open the service hose coupler valves by turning the

collars clockwise.

4. Select to begin the hose ush process, which runs for

three minutes, followed by a recovery.

When the hose ushing process is compete, the display

reads

Storage

Port

Connections

FLUSH HOSES Complete

5. Select to return to the Setup Menu.

6. Close the coupler valves by turning the collars

counterclockwise.

Figure 3

Page 21

Operating Instructions

Recharge the Vehicle A/C System

(N/A for 34788NI-H)

1. Connect both service hoses to the vehicle’s service ports.

2. Select CHARGE from the MAIN MENU.

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.

3. The user will be prompted to enter service data. Select

once complete to continue. The display shows

Charge: XX.XXX kg on High Side Oil Amount: XXX ml Min Charge quantity 10g

4. Use the arrow keys and the numeric keypad to enter the desired charge amount. Select to change units.

5. Using the arrow keys, maneuver to the charge path selection. High Side is default. To change, select on the control panel. This will allow the user to toggle between high, low, and both side charge paths. The current selection is indicated on the display.

6. Oil can also be injected into the system during the charge. Use the numeric keypad to enter the desired oil inject amount. Select to change units. Make sure there is available oil in the oil/dye inject bottle located on the rear of the machine and verify the correct oil viscosity is selected. See “Select Oil Viscosity (N/A for 34788NI-H)” on page 13.

7. Select to start the charge process. Moving or bumping the machine at this point may result in an inaccurate charge. When the charge cycle approaches the desired weight value, the machine slows down. It will charge, settle, charge again, settle, etc.

8. When prompted, select to perform hose equalization. Select to perform hose compensation.

Note: Hose equalization requires the user to start the vehicle. Hose compensation adds a preset amount of refrigerant to the chart to compensate for service hose volume.

Note: The charging process differs from vehicle to vehicle. Charge function for vehicles

equipped with a single service tting should

be carried out manually. Refer to the vehicle

service manual for specic instructions.

CAUTION: If the low-side (blue) or high-side (red) coupler valve is left open during the hose clearing process, the system will pull refrigerant back out of the vehicle.

9. When the CHARGE COMPLETE screen appears, it includes a summary of charge results. The user may select

to print the summary, if a printer is installed. Select

to proceed to clear the service hoses.

10. The user will be prompted to close the coupler valves and disconnect the hoses from the vehicle. Select to recover any remaining refrigerant from the hoses. Once the hose clear is complete, the machine will return to the Main Menu.

The vehicle A/C system is now ready for use.

Page 22

Recharge the Vehicle A/C System

(34788NI-H model)

Operating Instructions

1. Select CHARGE from the MAIN MENU.

The display shows

Is the service being performed on a system with an electric compressor using POE oil?

2. If the system does NOT have an electric compressor with

POE oil, select to continue. If the system has an electric compressor with POE oil, select to ush all residual oil from the hoses. The user will be prompted to “Connect service hoses to storage ports and open coupler valves.” See “Figure 3” on page 19. Continuing will begin the process of ushing the hoses. Once complete, select to continue through the Charge process.

3. The user will be prompted to enter service data. Select

once complete to continue. The display shows

Charge: XX.XXX kg on High Side

4. Connect both service hoses to the vehicle’s service ports

and open coupler valves.

5. Use the arrow keys and the numeric keypad to enter the

desired charge amount. Select to change units.

9. When the CHARGE COMPLETE screen appears, it includes a summary of charge results. The user may select to print the summary, if a printer is installed. Select to proceed to clear the service hoses.

The vehicle A/C system is now ready for use.

6. Using the arrow keys, maneuver to the charge path selection. High Side is default. To change, select on the control panel. This will allow the user to toggle between high, low, and both side charge paths. The current selection is indicated on the display.

8. When prompted, select to perform hose equalization. Select to perform hose compensation.

Note: Hose equalization requires the user to start the vehicle. Hose compensation adds a preset amount of refrigerant to the chart to compensate for service hose volume.

Page 23

Operating Instructions

Automatic Function

The AUTOMATIC function allows a user to perform an automatic recovery, vacuum, leak test, and/or charge sequence. A total automatic sequence may take up to an hour to complete.

1. Connect high-side (red) and low-side (blue) service hoses to the A/C system.

2. Open the service hose coupler valves by turning the collars clockwise.

3. Select AUTOMATIC from the MAIN MENU. The display shows

Vacuum Time: XX:XX Vacuum Leak Test: ON Charge: XX.XXX kg on High Side Additional Oil: XXX ml

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.

10. When the AUTOMATIC COMPLETE screen appears, it includes a summary of results. The user may select to print the summary, if a printer is installed. Select to proceed.

11. The user will be prompted to close the coupler valves and disconnect the hoses from the vehicle. Select to recover any remaining refrigerant from the hoses. Once the clear is complete, the machine will return to the Main Menu.

The vehicle A/C system is now ready to use.

4. Use the numeric keypad to enter the desired length of vacuum.

5. Using the arrow keys, maneuver downwards to choose whether to perform a vacuum leak test or not. ON is the default setting. To toggle, select on the control panel.

6. Use the arrow keys and the numeric keypad to enter the desired charge amount. Select

7. Using the arrow keys, maneuver to the “charge path selection.” High Side is default. To change, select on the control panel. This will allow the user to toggle between high, low, and both side charge paths. The text on the display will change to the current selection.

8. Using the arrow keys, maneuver to the “additional oil” entry eld. Use the numeric keypad to enter the desired additional oil inject amount. Select to change units.

9. Select to begin the AUTOMATIC cycle. The unit will now automatically proceed through all applicable functions: RECOVER, VACUUM, and CHARGE. If the vehicle being serviced has previously undergone a recover and vacuum procedure, the machine will only perform a CHARGE.

to change units.

Notes:

• The CHARGE function for vehicles equipped with a single-service fitting should be carried out manually according to procedures in the vehicle manufacturer’s service manual.

• After the RECOVER process, the user will be prompted to “Check oil bottle and enter oil to be injected.” The entered oil inject amount should be equal to the amount of oil drained and can be found by looking at the graduations on the drain bottle.

• If RECOVER was not performed, the amount of oil to be injected may be entered while programming the CHARGE information.

• If problems are encountered during the automatic sequence, an audio alert sounds three times. The sequence remains paused until the user enters a decision regarding how to proceed.

Page 24

Operating Instructions

System Flush

The SYSTEM FLUSH function is performed using a vehicle manufacturer-approved flushing adapter. Refer to the instructions included with the adapter while the following steps are performed.

1. Verify the usher lter and strainer are not plugged.

2. Mount the usher to the rear of the machine.

3. Remove the oil drain bottle (see Figure 4) from the Robinair machine. Drain the oil bottle, and dispose of the oil according to applicable regulations. Reinstall the oil drain bottle on the machine.

4. Recover all refrigerant from system to be ushed.

5. Note the amount of oil collected during recovery. This amount must be replaced, as well as any oil collected during ush.

Note: The amount of oil collected and reported during

system ush does not include the amount of oil collected

during the initial recovery.

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.

6. Verify there are at least 6.0 kg (13.2 lb) of refrigerant in the machine. The machine will not be able to complete a system ush without at least 6.0 kg of refrigerant in the ISV.

Note: If the machine does not have at least 6.0 kg (13.2 lb) of refrigerant on-board, see “Tank Fill” on page 13.

7. Disconnect the machine from the vehicle.

8. Refer to the vehicle service manual, and connect the appropriate ushing adapters and bypasses.

9. Connect the low-side (blue) service hose directly to the lter of the ushing kit.

10. Remove the high-side (red) service coupler, and connect the high-side (red) service hose to the system suction line adapter.

11. Use the supplied hose to connect the system discharge adapter to the usher inlet.

12. Connect hoses according to the instructions included with the ush kit.

13. Select SYSTEM FLUSH from the SETUP MENU. The unit will prompt for any service data entry, if desired. Select

to continue to the system ushing process. The user may be prompted to enter in a total Flush Time depending upon which ush process is enabled.

Oil Drain

Bottle

Figure 4

The machine will then automatically enter the VACUUM process and proceed to a leak test.

Once the vacuum and leak tests are completed, the unit

Page 25

Operating Instructions

will enter the actual system ushing process, followed by an oil drain.

14. When the Flush Complete screen appears, it includes a system ush result summary. The user may select to print the summary, if a printer is installed. Select to return to the SETUP MENU.

The vehicle A/C system has been ushed.

WARNING: Do NOT disconnect service

couplers during the ushing process. Refrigerant could spray out of the ttings,

and exposure may cause personal injury.

CAUTION: The ushing kit has a replaceable

lter as well as a debris strainer, both of

which can get plugged. At the end of the

ush cycle, check the high-side (red)

gauge for system pressure, and check the adapter for complete removal of refrigerant.

If pressure exists or refrigerant remains, exit

the ushing cycle and enter the recovery

mode to recover refrigerant through both the high-side (red) and low-side (blue)

hoses. Then service the lters and repeat the ush process.

Page 26

Maintenance Schedule

Maintenance Task Recommended Interval

After 68 kg (150 lb) of refrigerant has been

Change lter

Change vacuum pump oil

Check casters and wheels for ease of operation Monthly.

ltered. Refer to Filter Maintenance in the Maintenance section of this manual.

When the lter is replaced. Refer to Change Vacuum Pump Oil in the Maintenance section of this manual.

Maintenance

Check internal scale calibration

Check machine for leaks

Clean airow outlet panel (see Figure 5) Monthly. Use a clean cloth.

Clean cabinet and control panel Monthly. Use a clean cloth.

Inspect power cord and hoses for cuts and abrasions Daily.

Lubricate wheel bearings and inspect brake components Monthly.

Pressure Test

Airow

Outlet

Monthly. Refer to Calibration Check in the Maintenance section of this manual.

Monthly. Check hoses and connections for leakage. Disconnect power, remove the shroud, and use an electronic leak detector to check ttings.

Every 10 years. Performed by an authorized Robinair service center.

WARNING: To prevent personal injury

only qualied personnel may perform

inspections and repairs to this machine. Read and follow instructions and warnings in this manual, and wear protective equipment such as goggles and gloves.

Figure 5

Page 27

Maintenance

Electrical Protection

The machine may be equipped with a circuit breaker on the center divider as shown in Figure 6. If the breaker trips, its button will pop out. A tripped circuit breaker will cause the machine to lose all power.

1. Remove the front shroud.

2. Press the circuit breaker button to reset.

3. Replace the shroud.

Circuit

Breaker

Load Language

Use the following instructions to add or update a language from an SD card.

4. Choose SELECT LANGUAGE from the SETUP MENU.

5. Use the arrow keys to scroll to LOAD NEW. Select .

6. Insert the SD card containing the language data into the side panel on the machine. See Figure 7.

7. Follow the prompts to select the language to load or update. If loading a new language, it will be necessary to select which language to replace.

Figure 6

Insert SD card

containing new

or updated

language.

Figure 7

Page 28

Adjust Background Fill Target

1. Select ADJUST BACKGROUND FILL TARGET in the

SETUP MENU.

2. Using the arrows and the numeric keypad, enter the

desired ll target. Select to save the new value and exit. Select to exit and continue to use the previously entered amount.

Tank Fill

Maintenance

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.

This menu item is used to transfer refrigerant from a source tank to the ISV.

The maximum capacity of the internal storage vessel (ISV) is 10 kg. Use the arrow keys to move the cursor; use the keypad to enter a value.

Note: Add at least 3.6 kg of refrigerant to ensure sufcient

refrigerant is available for charging.

1. Connect the tank ll (black) hose to the liquid connector

on a full source tank.

2. Position the source tank in such a way that liquid refrigerant

is supplied to the connection. Open the source tank valve.

3. Select TANK FILL from the SETUP MENU. The machine

displays

Tank Fill Fill Amount: XX.XYY Charge Capacity: XX.XXYY Recover Capacity: XX.XXYY

4. Enter the quantity to recover, and select .

Note: Add at least 3.6 kg of refrigerant to ensure sufcient

refrigerant is available for charging.

5. The machine begins lling the ISV and automatically

stops when the preset tank ll level is reached. To stop the tank ll before the preset level is reached, select . An option to exit will appear on the display.

6. Once complete, remove the hose from the source tank.

Page 29

Maintenance

Filter Maintenance

The lter is designed to trap acid and particulates, and to remove moisture from refrigerant. To meet the mandate for adequate moisture and contaminant removal, the lter must be replaced after 68 kg (150 lb) of refrigerant has been ltered.

The machine gives a warning when 57 kg (125 lb) of the lter capacity has been used; the machine locks down when the 68 kg (150 lb) lter capacity has been reached and will no longer function.

Check Remaining Filter Capacity

1. Select FILTER MAINTENANCE from the SETUP MENU or when the machine prompts. The machine displays

Remaining Filter Capacity: XXX.XO kg Replace lter now?

The machine displays the amount of lter capacity remaining until the machine locks down.

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.

2. Select to change the lter; select to resume using the machine.

WARNING: The components in the machine are under

high pressure. To prevent personal injury, change the

lter only when the machine prompts.

Page 30

Replace the Filter

Maintenance

1. If was selected to change the lter, the machine prompts

for the new lter code to be entered.

Enter new lter serial number

Use the keypad to enter the serial number that appears on the new lter, and select to continue.

Note: If “Invalid serial number” is displayed, the serial

number has been incorrectly entered, or the lter has

already been used in this machine.

2. The machine clears the existing lter and displays

Serial number accepted. Turn power off and replace lter.

Turn off the machine. Remove the oil bottle. Remove the four screws holding the shroud. See Figure 8.

3. Hang the shroud on the back of the machine as shown

in Figure 9.

4. Remove the lter by turning it counterclockwise (as viewed

from the bottom of the lter).

5. Look at the new lter. Verify both o-rings are lubricated

and correctly located in the grooves.

Remove the four screws holding the shroud.

Figure 8

6. Install the new lter by threading it clockwise into place.

Verify the lter is positioned correctly as shown in Figure

9. Tighten the lter to 20 Nm.

7. Power the machine on. The Change Vacuum Pump Oil

operation will begin, and the screen will display

Warming oil for drain XX:XX

See “Change Vacuum Pump Oil” on page 31 for more information.

The machine will then begin the Leak Check operation. See “Leak Check” on page 32 for more information.

Caution: To prevent equipment damage, use only

authentic Robinair No. 34724 lters in this machine. All

performance tests and claims are based on using this

specic lter.

Hang Shroud

Here

Filter

Figure 9

Page 31

Maintenance

Calibration Check

This function is used to ensure the machine’s internal scale is always calibrated. During this test, use only the calibration weight that is provided with the machine.

1. Refer to Figure 10, and verify the magnet on the bottom of the machine is clean.

2. Select CALIBRATION CHECK from the SETUP MENU. The machine displays

Place calibration weight onto the magnet located on the bottom of the machine.

3. Attach the calibration weight to the magnet on the bottom of the machine. Select to continue.

4. The machine displays

Remove calibration weight from the magnet located on the bottom of the machine.

Remove the calibration weight from the magnet. Select

to continue.

• If the display shows

Calibration check passed

the scale is in calibration. Select to return to the Setup Menu.

• If the display shows

Calibration check failed. Retry?

the scale is out of calibration. To retry, select . If calibration continues to fail, contact an authorized Robinair service center for assistance.

Magnet

Figure 10

Page 32

Change Vacuum Pump Oil

1. Select PUMP MAINTENANCE from the SETUP MENU or

when prompted. The display shows how long the vacuum pump has operated since the last oil change.

Remaining oil life: XXX:XX (hhh:mm) Change oil now?

Maintenance

WARNING: To prevent personal injury,

do NOT operate the machine at any other

time without the oil ll port cap installed,

because the vacuum pump is pressurized during normal operation.

2. Select to change vacuum pump oil. If the machine

displays

Warming oil for drain XX:XX

allow the vacuum pump to run for two minutes to warm up the oil. If the oil is already warm, the display shows

Drain used oil from pump and replace with 150 ml of new oil Remove ll cap to speed draining of oil

3. Slowly open the oil ll cap to verify there is no pressure in

the machine. Then carefully remove the cap. See Figure 11.

4. Remove the oil drain tting cap and drain the oil into a

suitable container for disposal. Replace the cap and close tightly. Select to continue.

5. The machine displays

Fill vacuum pump to the center of the sight glass Reinstall ll cap

Slowly add vacuum pump oil to the pump through the oil ll port until the oil reaches the center of the sight glass. Install the cap on the oil ll port and close tightly. Select

to return to the SETUP MENU.

Oil Fill Cap

and Port

Sight

Glass

Oil Drain

Fitting

Figure 11

Note: For proper oil level, ensure the machine is on a at,

level surface.

CAUTION: It is the responsibility of the user to monitor vacuum pump oil level and clarity. If contaminated oil is not removed from the vacuum pump and replaced, the vacuum pump will be permanently damaged.

Page 33

Maintenance

Leak Check

A leak test may be performed on the machine at any time. During this test, components containing refrigerant are pressurized and monitored for pressure decay, which could indicate a leak.

1. Select LEAK CHECK from the SETUP MENU. The machine displays

Connect service hoses to storage ports and open coupler valves

2. Connect the service hose couplers to the storage ports at the rear of the machine. Open the couplers by turning the collars clockwise.

3. Select to start. The machine performs a self-recovery and displays

Recover in progress

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.

The machine performs a 30-second vacuum test and displays

Vacuum leak check in progress

If the vacuum test fails, the machine will prompt to check for leaks.

Once the machine passes the vacuum test, a controlled pressure is applied to its internal components. The machine displays

Pressure leak check in progress

Pressure is held for ve minutes and monitored for decay. Minutes and seconds count down on the display.

• If an acceptable pressure decay is detected, the

machine recovers refrigerant and returns to the Setup Menu, ready for normal operation.

• If an unacceptable pressure decay is detected, the

machine will prompt to check for leaks. Take the machine to an authorized Robinair service center for repair.

WARNING: To prevent personal injury should the machine require transport to a local Robinair service center, follow local government regulations regarding transportation of equipment containing R-134a.

Page 34

Select Oil Viscosity

(N/A for 34788NI-H)

The oil inject functionality in this machine is automatic and timing-based. The viscosity of the oil being injected signicantly affects the accuracy.

1. Select SET OIL INJECT VISCOSITY from the SETUP MENU.

2. Using the arrow keys, highlight the desired PAG oil viscosity (46, 100, 125, or 150). Select to accept.

The unit is now ready to accurately inject the selected oil.

Edit Print Header

To make changes to text that appears in this screen:

3. Select EDIT PRINT HEADER from the SETUP MENU.

4. The cursor is in the rst eld. Update the text by using the arrows and the multi-tap interface on the numeric keypad:

Maintenance

• ARROW LEFT and act as a backspace key.

• ARROW RIGHT moves the cursor to the right.

• ZERO (0) key acts as a spacebar.

• ARROW UP and DOWN navigate between the rows.

5. Select to save the changes and return to the Setup Menu; select to return to the previous header and exit

to the Setup Menu.

Replace Printer Paper

To install a new paper roll in the printer:

1. Remove the cover on the printer by pulling out on the tab as shown in Figure 12.

2. Remove the paper core.

3. Install the new roll of paper with the end of the paper at the top of the roll.

4. Assemble the cover onto the printer with the leading edge of the paper over the roller.

Leading Edge of

Paper Over Roller

Tab

Figure 12

Page 35

Maintenance

Install a Printer

A printer may be purchased and installed on any model not containing a printer. All models of the machine already contain a printer connection harness that is ready for use. To install a printer:

1. Turn OFF the machine and disconnect it from its power source.

2. Remove the four screws holding the shroud. See Figure 8.

3. Hang the shroud on the back of the machine as shown in Figure 9.

4. Remove the two screws on the top corners of the control panel, allowing the control panel to swivel forward.

5. The printer connection harness is fastened to the back of the cap that is in the printer location cut-out. Remove the zip tie, freeing the harness. The harness will be used in a later step.

6. Remove the cap from the printer location cutout by pressing on the cap’s tabs from the back of the control panel and pushing the cap out of the panel.

7. Remove the two locking arms from the printer by inserting the face of a athead screwdriver under each tab near the back of its locking arm. Pry the tab outward while sliding the entire arm away from the printer.

8. Place the printer into the cut-out area on the control panel. Press the face of the printer ush to the panel, oriented with the paper coming out at the top of the printer as shown in Figure 12.

9. Replace the printer locking arms from within the inside of the control panel. Push them forward until they come into rm contact with the inside face of the control panel.

10. Locate the free end of printer connection harness which was detached from the cap in Step 5.

11. Attach the two free connectors to the appropriate connectors on the back of the printer.

12. Swivel the control panel back into place and fasten it using the two screws removed in Step 4.

13. Assemble the shroud back onto the machine and install the four screws removed in Step 2.

The printer is now ready for use.

Page 36

Replacement Parts

A/C Service Function

Component

Calibration Weight 16214 Filter 34724 Oil Drain Bottle 19100 Oil Inject Bottle 19867

Printer 30038

Printer Paper (3 rolls) 34214 LP Service Coupler 18190A HP Service Coupler 18191A Service Coupler Set

(high-side [red] and low-side [blue] couplers) Hose Set without Couplers

(high-side [red] and low-side [blue]) Service Hose without Coupler (low-side, blue) 70020 Service Hose without Coupler (high-side, red) 70021 Vacuum Pump Oil (pint) 13119 Vacuum Pump Oil (quart) 13203 Vacuum Pump Oil (gallon) 13204 Vinyl Dust Cover (optional) 17499

Replacement

Part No.

18192

71789

WARNING: To prevent personal injury, use only those repair parts called out in this parts list. Items found in this parts list have been carefully tested and selected by Robinair.

Glossary

A/C System : The vehicle air conditioning system being serviced.

Evacuation : Moisture and other non-condensables are removed from an A/C system by a vacuum pump.

Internal Storage Vessel (ISV) : The rellable refrigerant storage tank designed specically for this machine;

10 kg (22 lb) capacity.

Leak Test (Vacuum) : Components containing refrigerant are evacuated and monitored for pressure rise, which could indicate a leak.

Machine : Model No. 34788NI, 34788NI-H, or 34788NI-230.

Leak Check : Components containing refrigerant are pressurized and monitored for pressure decay, which

could indicate a leak.

Recovery / Recycling : Refrigerant is recovered from an A/C system, ltered, and stored in the ISV.

Refrigerant : R-134a.

Page 37

Troubleshooting

Display Cause Solution

CALIBRATION CHECK

FAILED

Internal scale is out of calibration.

Select to retry calibration check. If calibration continues to fail, exit current test and contact a Robinair authorized service center for repair.

CHARGE STALLED!

DATABASE NOT AVAILABLE

EXCESS TANK WEIGHT

FILTER CAPACITY

EXHAUSTED, FILTER MUST

BE REPLACED

FILTER WEIGHT XXX.XYY

REPLACE FILTER NOW?

FILTER SERIAL NUMBER

HAS ALREADY BEEN USED.

RE-ENTER OR EXIT

Refrigerant is stalled in the ISV or the machine.

Machine is not shipped with database installed.

Overll safety circuit tripped. Machine is locked out because of too much refrigerant in ISV.

68 kg (150 lb) or more refrigerant has been recovered since last lter change.

Filter serial number entered into the machine is not correct.

Verify connections are secure and valves are in correct position.

Contact a Robinair authorized service center for more information.

Refer to Filter Maintenance section of this manual for

instructions to change lter.

Filter has already been used on this machine. Obtain new Robinair

lter No. 34724.

HIGH TANK PRESSURE

INLET PRESSURE IS TOO

HIGH FOR VACUUM

INSUFFICIENT

REFRIGERANT.

6.00 KG REQUIRED FOR SYSTEM FLUSH

Machine is locked out because pressure in ISV is too high, possibly because of excessively high tank temperature.

Before the machine begins evacuating the A/C system, it checks for pressure in the system that could damage the vacuum pump. In this case, system pressure is above 0.35 bar gauge.

Not enough refrigerant in the ISV to perform a system ush.

Allow machine to cool before performing additional A/C service. If problem continues, contact a Robinair authorized service center for more information.

Select . Refer to Recover section of this manual to recover refrigerant before proceeding.

Refer to Tank Fill in Maintenance section of this manual.

Page 38

Troubleshooting

Display Cause Solution

INSUFFICIENT

REFRIGERANT

AVAILABLE FOR CHARGE

SELECTED: XX.XXYY

AVAILABLE: XX.XXYY

INVALID CODE

INVALID SERIAL NUMBER!

LEAK TEST FAILED

NO PRESSURE ON INLETS

CHECK CONNECTIONS

RECOVER ANYWAY?

After a desired weight is entered, if the charge process will leave less than 0.67 kg (1.4 lb) of refrigerant in ISV, the charge function will not start.

Activation code entered into the machine is not correct.

Filter serial number entered into the machine is not correct.

A leak in the vehicle A/C system.

System pressure is below 0.35 bar gauge.

Refer to Tank Fill in the Maintenance section of this manual.

Verify activation code is entered exactly as received. Capitalization is required.

Verify serial number entered

matches serial number on lter. Verify lter has not been used on

machine previously.

Exit current test and perform

repairs on vehicle A/C system.

Verify high-side (red) and low-side (blue) hoses are connected and

coupler valves open. Select

to RECOVER; select to bypass recover and proceed to VACUUM.

OIL DRAIN HALTED

OIL LIFE REMAINING

XX:XXX

CHANGE OIL NOW?

OUT OF RANGE

ACCUMULATOR PRESSURE

OUT OF RANGE

ISV PRESSURE

Accumulator pressure failed to rise above 1.10 bar within the minute before an oil drain was supposed to occur.

Display shows vacuum pump oil life remaining until machine locks down.

Accumulator pressure transducer is not reading pressure correctly.

Internal storage vessel

pressure transducer is not

reading pressure correctly.

Adequate pressure is required within the accumulator to force the oil, which has been separated from the refrigerant, out of the system. Select

to exit.

Refer to Maintenance section of this manual for instructions to change vacuum pump oil.

Exit current test and contact a

Robinair authorized service center for more information.

Exit current test and contact a

Robinair authorized service center for more information.

to retry; select

Page 39

Troubleshooting

Display Cause Solution

OUT OF RANGE

ISV TEMPERATURE

OUT OF RANGE

LS PRESSURE SENSOR

POWER BOARD

COMMUNICATION FAILED

PRESSURE LEAK TEST

FAILED

CHECK UNIT FOR LEAKS

REFRIGERANT

PURITY FAILED

Internal storage vessel

temperature sensor is not

reading temperature correctly.

Low-side pressure transducer is not reading pressure correctly.

Failed communication with relay board.

A leak in vehicle A/C system.

Refrigerant tested is not R-134a or it is contaminated.

Exit current test and contact a

Robinair authorized service center for more information.

Exit current test and contact a

Robinair authorized service center for more information.

Cycle power. If problem continues, contact a Robinair authorized service center for more information.

Exit current test and perform

repairs on vehicle A/C system.

Do not recover contaminated refrigerant into the machine; use an external refrigerant recovery machine dedicated to contaminated refrigerant.

SOURCE TANK IS EMPTY

TANK FULL. REMOVE

REFRIGERANT BEFORE

CONTINUING

TRIAL PERIOD EXPIRED

UNIT ACTIVATION

REQUIRED TO CONTINUE

USE

VACUUM TEST FAILED.

CHECK SYSTEM FOR LEAKS

Refrigerant cannot be transferred to the ISV because the source tank is empty.

ISV is too full to recover additional refrigerant.

Failure to register and activate the machine within 30 days of initial startup will cause the machine to lock out and no longer function.

A leak in vehicle A/C system.

Exit current test and replace the

source tank.

Perform a charge process to remove refrigerant from ISV before any further recovery attempts.

Select and refer to Unit Activation section in this manual to register the machine.

Exit current test and perform

repairs on vehicle A/C system.

Page 40

Storage and Transportation of Equipment

Storage

Never leave the machine live if an immediate use is not scheduled.

1. Disconnect the machine from its power supply.

2. Loop the service hoses around the handle twice and attach them to the storage ports. See Figure 13.

3. Store the machine in a dry, stable area, away from ames and hot surfaces. The temperature of the storage area should range between -18°C and 60°C (0°F and 140°F).

4. Lock the front wheels.

Transportation of Equipment

WARNING: To prevent personal injury, should the machine require transport to a Robinair service center, follow local government regulations regarding transportation of equipment containing R-134a.

Hose couplers connected to storage ports.

Figure 13

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Disposal of Equipment

At the end of its useful life, dispose of the R-134a machine according to current government regulations.

• Public administration and producers of electrical / electronic equipment (EEE) are involved in facilitating the processes of the re-use and recovery of waste electrical / electronic equipment through the organization of collection activities and the use of appropriate planning arrangements.

• Do not dispose of this equipment as miscellaneous solid municipal waste. Arrange to have it collected separately. Unauthorized disposal of waste electrical / electronic equipment is punishable by law with appropriate penalties.

• The reuse and correct recycling of electrical / electronic equipment (EEE) is required for the protection of the environment and the well-being of humans.

Disposal of Recycled Materials

It is the responsibility of the user to determine if a material is a hazardous waste at the time of disposal. The user must ensure compliance with all applicable laws and regulations.

1. Deliver the refrigerant recovered from A/C systems to gas suppliers for recycling or disposal.

2. Deliver the lubricants extracted from A/C systems to used oil collection centers.

3. Review the laws in your jurisdiction to determine correct disposal procedures for pump oil.

Disposal of the Machine

1. Detach and vent the gas from the machine circuit. Completely discharge the refrigerant tank in compliance with current government regulations.

2. Deliver the machine to an appropriate disposal center.

Disposal of Batteries

At the end of their useful life, dispose of batteries according to current government regulations. Batteries must be recycled or disposed of correctly. Do not throw away batteries as part of normal refuse disposal.

WARNING: To prevent personal injury, do not throw batteries into open ame.