APC ACRD500 Service Manual download pdf (Page 55)

47InRow RD Technical Data Manual

PART 2 — PRODUCT

2.01 STANDARD COMPONENTS

A. Cabinet Construction

1. Front and rear exterior panels shall be 18 gauge perforated steel with 69.5% open free area,

and equipped with a keyed lock to provide a means of securing access to the internal

components of the unit.

a. ACRD100 and ACRD200 series only: Exterior panels shall be 18 gauge steel with

80 kg/m

(5 lb/ft

) density foam insulation. Insulation complies with UL94-5VA ASTM

E84 flame spread and smoke developed rating of 25/50.

2. The frame shall be constructed of 16 gauge formed steel welded for maximum strength. All

units shall provide maintenance from the front and rear, allowing units to be placed within a

row of racks.

3. All exterior panels and frame shall be powder coated for durability and attractive finish.

Exterior frame and panel color shall have color values: L = 74.50, a = -0.53, b = +8.20.

4. Units shall include casters and leveling feet to allow ease of installation in the row and provide

a means to level the equipment with adjacent IT racks.

B. Fans

1. Variable speed direct drive mixed flow DC fan assembly (ACRD100 and ACRD200 series):

a. The unit shall be configured for draw-through air pattern to provide uniform air flow over

the entire face of the coil. Each unit shall include six 200 mm mixed flow direct drive DC

axial fans. Each fan assembly should be designed to provide 180.1 l/s (381.7 CFM) for

total unit airflow of 1080.76 l/s (2290 CFM). The ACRD500 series includes two fans.

Each fan provides 1085.5 l/s (2300 CFM) for a total unit airflow of 2171 l/s (4600 CFM).

b. Variable speed fans: Fans shall be variable speed capable of modulating from 30-100%.

Fans shall soft start to minimize in-rush current.

c. Fan protection: Each fan assembly shall consist of a plastic injection molded bezel with

integral fan discharge finger guard. Inlet of the fan should include a cage type finger

guard.

d. Operation and service: The unit should be capable of operation in the event of a fan

failure. Fans shall be replaceable while the unit is in operation.

2. Variable speed fan assembly (ACRD500 series):

a. Variable speed fans: The unit is equipped with two variable speed, electronically

commutated, 400-mm backward incline fans complete with inlet volute.

b. Fan protection: discharge finger guard. Outlet of the fan should include a cage type finger

guard.

c. Operation and service: The unit should be capable of operation in the event of a fan

failure.

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APC ACRD500 Service Manual Page 55