A/C-station bus R407C, m/ display

The NUNCHI CLIMATE BUSS R407C is a professional heavy-duty A/C service station specifically configured for servicing R407C air-conditioning systems in buses, electric buses and other large-capacity mobile A/C applications.

Unlike conventional automotive A/C service machines primarily designed around R134a or R1234yf, the BUSS R407C is dedicated to R407C applications.

This makes it a specialized workshop solution for operators, fleet workshops and A/C specialists that need professional equipment capable of handling the particular service requirements of R407C systems.

SPECIFICALLY FOR R407C

• The key advantage of the NUNCHI CLIMATE BUSS R407C is simple:

IT IS BUILT AROUND R407C SERVICE.

R407C is a zeotropic refrigerant blend used in various air-conditioning and refrigeration applications, including certain electric-bus and high-capacity vehicle A/C systems.

Servicing these systems requires equipment that is correctly configured for the refrigerant.

• The BUSS R407C provides a dedicated solution for:
• R407C refrigerant recovery
• R407C recycling/service handling
• System evacuation
• Compressor-oil management
• Accurate R407C charging
• Heavy-duty bus A/C servicing

R407C SYSTEM? USE EQUIPMENT DESIGNED FOR R407C.

DESIGNED FOR BUS & ELECTRIC-BUS A/C SYSTEMS

Bus A/C systems place very different demands on service equipment compared with passenger vehicles.

• A large bus or electric-bus climate system can contain:
• Large R407C refrigerant quantities
• Long refrigerant lines
• Large condensers
• Large evaporators
• Multiple evaporator sections
• High-capacity compressors
• Electric compressors
• Larger compressor-oil quantities
• Roof-mounted A/C units
• Multiple cooling fans
• Complex refrigerant circuits

The NUNCHI CLIMATE BUSS R407C is designed to provide the workshop capacity required for these demanding applications.

WHY R407C REQUIRES THE RIGHT SERVICE APPROACH

R407C is not the same as a conventional single-component refrigerant.

It is a blend of different refrigerants, and correct handling procedures are therefore particularly important.

• One of the most important R407C service principles is:

R407C SHOULD BE CHARGED AS A LIQUID.

Because R407C is a zeotropic blend, incorrect charging practices can change the composition of the refrigerant entering the system.

The NUNCHI CLIMATE BUSS R407C is intended to give technicians a controlled and professional platform for servicing R407C systems correctly.

COMPLETE R407C A/C SERVICE

The NUNCHI CLIMATE BUSS R407C brings the essential stages of professional heavy-duty R407C servicing together.

RECOVER

Recover R407C from the bus or vehicle A/C system.

RECYCLE / MANAGE

Process and manage the recovered refrigerant according to the machine's R407C service procedure.

VACUUM

Evacuate the large A/C circuit to help remove air and moisture.

OIL

Manage compressor oil correctly during service and repair.

CHARGE

Accurately recharge the system with the specified quantity of R407C.

VERIFY

Check pressures, temperatures and A/C performance after service.

BUILT FOR LARGE R407C REFRIGERANT CHARGES

Bus A/C systems can contain substantially larger refrigerant quantities than passenger-car systems.

This means that service equipment must be capable of efficiently handling:

• More Refrigerant
• Larger Internal System Volume
• Longer Refrigerant Lines
• Larger Heat Exchangers
• Longer Recovery Processes
• Longer Evacuation Requirements

The NUNCHI CLIMATE BUSS R407C is designed as a heavy-duty service solution for these larger R407C applications.

PROFESSIONAL R407C RECOVERY

With large R407C systems, efficient refrigerant recovery becomes particularly important.

• Professional recovery helps:
• Reduce unnecessary refrigerant loss
• Reduce refrigerant emissions
• Recover valuable R407C
• Reduce workshop refrigerant consumption
• Prepare the system correctly for repair
• Improve service efficiency

For fleet workshops servicing multiple R407C buses, refrigerant management can have a significant impact on operating costs.

MORE REFRIGERANT = MORE REASON TO RECOVER IT CORRECTLY.

POWERFUL VACUUM FOR LARGE BUS SYSTEMS

Bus and electric-bus A/C systems can have a large internal refrigerant volume.

Long pipes combined with large evaporators and condensers mean that proper evacuation is particularly important.

• The vacuum process helps remove:
• Air
• Moisture
• Residual refrigerant vapor
• Non-condensable gases

from the refrigerant circuit before charging.

• This becomes especially important following:
• Compressor replacement
• Hose replacement
• Pipe replacement
• Condenser replacement
• Evaporator replacement
• Refrigerant leakage
• Major system repairs
• Opening of the refrigerant circuit

LARGE SYSTEM. DEEP VACUUM. CORRECT SERVICE.

ACCURATE R407C CHARGING

Correct refrigerant quantity is essential for the performance of an R407C bus A/C system.

• Incorrect refrigerant charge can affect:
• Cooling capacity
• Compressor operation
• Operating pressures
• Refrigerant circulation
• Oil return
• Energy consumption
• System reliability

The NUNCHI CLIMATE BUSS R407C provides accurate refrigerant charging by weight.

R407C – CHARGE CORRECTLY AND CHARGE ACCURATELY.

Because R407C is a refrigerant blend, correct charging technique is particularly important.

The technician should always follow the system manufacturer's specified R407C charging procedure and charge quantity.

PROFESSIONAL OIL MANAGEMENT

Correct compressor oil is critical in R407C systems.

Depending on the compressor and system manufacturer, the system may require a specific oil type and viscosity.

• The technician should always verify:
• Correct Refrigerant
• Correct Oil Type
• Correct Oil Quantity
• Correct Refrigerant Charge

Correct oil management becomes especially important when working with electrically driven compressors in electric buses.

DESIGNED FOR ELECTRIC-BUS APPLICATIONS

One of the most important applications for the NUNCHI CLIMATE BUSS R407C is servicing R407C systems found in certain electric buses.

Electric buses can use large electrically driven compressors and roof-mounted climate systems designed to provide substantial cooling capacity for both the passenger compartment and vehicle operation.

• These systems require technicians to understand:
• R407C characteristics
• High-capacity refrigerant circuits
• Electric compressors
• Correct compressor oil
• Electrical safety
• Correct refrigerant recovery
• Deep evacuation
• Accurate liquid charging

The BUSS R407C provides the refrigerant-service platform required for professional workshop servicing of these applications.

IDEAL FOR FLEET WORKSHOPS

The NUNCHI CLIMATE BUSS R407C is particularly suitable for workshops responsible for fleets containing R407C systems.

• Typical Applications
• Electric buses
• City buses
• Coaches
• Public transportation fleets
• Large mobile A/C systems
• Specialist R407C vehicle applications
• Commercial and industrial mobile climate systems

KEEP YOUR R407C FLEET MOVING

For a bus operator, reliable air conditioning is more than passenger comfort.

• An A/C system failure can result in:
• Vehicle Downtime
• Passenger Complaints
• Schedule Disruption
• Additional Workshop Costs
• Reduced Fleet Availability

Having dedicated R407C service equipment allows the workshop to service these vehicles internally and efficiently.

THE RIGHT MACHINE. THE RIGHT REFRIGERANT. THE RIGHT SERVICE.

WHY CHOOSE THE NUNCHI CLIMATE BUSS R407C?

SPECIFICALLY CONFIGURED FOR R407C

The most important advantage: a professional heavy-duty A/C service station dedicated to R407C applications.

IDEAL FOR R407C BUS SYSTEMS

Designed for workshops servicing buses and other high-capacity mobile A/C systems using R407C.

ELECTRIC-BUS SERVICE

An excellent solution for fleet workshops responsible for electric buses equipped with R407C climate systems.

LARGE REFRIGERANT CAPACITY APPLICATIONS

Designed around the service requirements of larger A/C systems rather than conventional passenger-car applications.

PROFESSIONAL R407C RECOVERY

Recover valuable R407C and reduce unnecessary refrigerant loss.

POWERFUL EVACUATION

Support the deeper and longer evacuation requirements associated with large-volume refrigerant circuits.

ACCURATE R407C CHARGING

Charge the manufacturer-specified refrigerant quantity accurately by weight.

CORRECT R407C HANDLING

Provide technicians with dedicated equipment for following the correct service procedures associated with a blended refrigerant.

PROFESSIONAL OIL MANAGEMENT

Support correct compressor-oil management during routine servicing and component replacement.

IDEAL FOR FLEET OPERATIONS

A dedicated solution for workshops maintaining multiple R407C buses or other large R407C systems.

WHY A DEDICATED R407C MACHINE?

A workshop servicing an R407C fleet should not have to rely on equipment primarily intended for passenger-car refrigerants.

• The NUNCHI CLIMATE BUSS R407C provides a dedicated approach:
• Dedicated R407C Refrigerant Circuit
• Dedicated R407C Service Procedures
• Heavy-Duty Refrigerant Recovery
• Large-System Evacuation
• Accurate R407C Charging
• Professional Oil Management

This creates a service station specifically focused on the needs of R407C bus and heavy-duty A/C systems.