Trane Modular 20 to 35 Tons Instrukcja Instalacji Pobierz pdf (Strona 22)

22 CXRC-SVX01F-EN

Maintenance

Before beginning any maintenance procedures heed all

warnings and cautions.

Refrigerant System

Refrigerant Leak Test Procedure

Note: These service procedures require working with

refrigerant. Do not release refrigerant to the

atmosphere!The service technician must comply

with all federal, state, and local laws.

When Leak-testing refrigerant systems, observe all safety

precautions.

Leak test only one circuit at a time to minimize system

exposure to potentially harmful moisture in the air.

Use R-410A refrigerant gas as a tracer for leak detection

and use oil-pumped dry nitrogen to develop required test

pressures.

Field Piping (air cooled discharge and liquid

lines)

1. Ensure all required field installed piping pressure tests

are completed in accordance with national and/or local

codes.

2. Close liquid line angle valve.

3. Connect R-410A refrigerant cylinder to high side

charging port (at Remote Condenser or field supplied

WARNING

Hazardous Service Procedures!

The maintenance and troubleshooting procedures

recommended in this section of the manual could

result in exposure to electrical, mechanical or other

potential safety hazards. Always refer to the safety

warnings provided throughout this section concerning

these procedures. Unless specified otherwise,

disconnect all electrical power including remote

disconnect and discharge all energy storing devices

such as capacitors before servicing. Follow proper

lockout/tagout procedures to ensure the power can not

be inadvertently energized. When necessary to work

with live electrical components, have a qualified

licensed electrician or other individual who has been

trained in handling live electrical components perform

these tasks. Failure to follow all of the recommended

safety warnings provided, could result in death or

serious injury.

WARNING

Confined Space Hazards!

Do not work in confined spaces where refrigerant or

other hazardous, toxic or flammable gas may be

leaking. Refrigerant or other gases could displace

available oxygen to breathe, causing possible

asphyxiation or other serious health risks. Some gases

may be flammable and or explosive. If a leak in such

spaces is detected, evacuate the area immediately and

contact the proper rescue or response authority. Failure

to take appropriate precautions or to react properly to

such potential hazards could result in death or serious

injury.

WARNING

Hazard of Explosion!

Never use an open flame to detect gas leaks. It could

result in an explosion. Use a leak test solution for leak

testing. Failure to follow recommended safe leak test

procedures could result in death or serious injury or

equipment or property-only-damage.

WARNING

Hazard of Explosion!

Use only dry nitrogen with a pressure regulator for

pressurizing unit. Do not use acetylene, oxygen or

compressed air or mixtures containing them for

pressure testing. Do not use mixtures of a hydrogen

containing refrigerant and air above atmospheric

pressure for pressure testing as they may become

flammable and could result in an explosion.

Refrigerant, when used as a trace gas should only be

mixed with dry nitrogen for pressurizing units. Failure

to follow these recommendations could result in death

or serious injury or equipment or property-only

damage.

WARNING

Hazardous of Explosion!

Do not exceed unit nameplate design pressures when

leak testing system. Failure to follow these instructions

could result in an explosion causing death or serious

injury.

WARNING

R-410A Refrigerant under High Pressure!

The units described in this manual use R-410A

refrigerant. Use ONLY R-410A rated service equipment

or components with these units. For specific handling

concerns with R-410A, please contact your localTrane

representative.

Failure to use R-410A rated service equipment or

components could result in equipment exploding under

R-410A high pressures which could result in death,

serious injury, or equipment damage.

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