APC ACRD500 Manual de instalación descargar pdf (Pagina 20)

InRow RD Operation and Maintenance12

Compressor Oil Charge

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

You may need to add oil to air-cooled equipment, depending on the condenser size and the lengths of

tube running between the equipment and the condenser.

Let the compressor run at full capacity for at least one hour

and check the oil level in the oil sight glass. The level should

be between 1/4 and 3/4 full, or within the limit shown on the

oil level sticker. If the oil is not within the acceptable limit,

perform the oil-charging procedure below.

Oil charging procedure

1. Calculate the approximate amount of additional oil needed using the following formula:

(R x 0.022 x 16)–(C x 0.10) = A

– R — Refrigerant in the system (this amount should have been recorded during installation)

– C — Compressor oil charge (in fluid ounces)

– A — Amount of additional oil (in fluid ounces).

Note: The compressor used in this equipment comes with an internal oil charge of

1686 ml (57 fl oz).

In the following example, there are 50 pounds of refrigerant in the system.

(50 x 0.022 x 16)–(57 x 0.10)

(17.6)–(5.7) = 11.9 fluid ounces of additional oil

2. Prepare to add oil:

a. Use a new, sealed oil can and a manual oil pump. The pump hose must be sized for 1/4 in

flare fittings and must include a valve depressor at its end, which will open the valve on the

Schrader service port of the compressor.

b. At a minimum, use a quality POE oil with a viscosity of 32 cst, 160 sus at 40°C (104°F).

Suggested oils: Danfoss Maneurop 160 PZ Polyolesteroil, the approved type of oil for this

equipment. Approved alternative oil types:

• CPI (Lubrizol) reference: CP-2931AH or CP-2931A or equivalent

• ICI_UNIQUEMA reference: Emkarate RL32H or equivalent

na2265a

Sight glass

Caution: Do not charge the compressor with too

much oil, or compressor damage could result. The

only way to drain oil from the compressor is to

remove the compressor from the equipment,

which cannot be done when the equipment is in

the row.

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 59 60

Sin comentarios

APC ACRD500 Manual de instalación Pagina 20