APC ACRD500 Manual de Instalação descarregar pdf (Página 18)

InRow RD Operation and Maintenance10

Charging the equipment

Caution: This procedure is to be done by APC-trained personnel only.

R407C is a blend refrigerant. When charging equipment with blend refrigerants, only liquid refrigerant

must be charged.

Caution: Charging with other than liquid R407C refrigerant may damage the system.

1. Ensure the ball valves are open.

2. Confirm the calculated system

charge.

3. Connect the refrigerant cylinder to

the charging or gauge port on the

receiver outlet valve. Open the

receiver valve approximately half

way.

4. Charge liquid refrigerant into the

high side of the system until the

system pressures equalize. While the unit is NOT operational, charge liquid to the suction (low

side) line to simply equalize pressures throughout the system DO NOT start the system until the

pressure equalizes. Please note charging liquid to the suction port during operation may damage

or reduce the life of the compressor.

5. Prior to starting the system, make sure all

system valves are open and the system high

side pressure remains above 15.9 bar (230 psi).

This may require blocking the condenser inlet

slightly. Remove any blocking panels after

charging is complete.

6. Start the cooling unit. See “Start the cooling

unit” on page 18

7. Once the system is operational, front seat the

receiver service valve and continue charging

liquid at the Schrader port down stream of the

receiver shutoff valve, until the calculated

charge is complete. When this procedure is

complete, fully back seat the receiver shutoff

valve. Leave charging hoses in place in the

event additional charging is required.

na2455a

Service port

Schrader port

Liquid line

LEAK

DETE CT OR

CA BLE

SUCTIO N

DIS CHA RGE

SERVICE

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