APC ACRD500 Service Manual download pdf (Page 56)

InRow RD Technical Data Manual48

C. Main Disconnect Switch

1. The unit shall be provided with thermal-magnetic circuit breakers with interrupt capacity

ratings per UL489/CSA C22.2/IEC-947.

2. Units shall include a main disconnect switch located on the electrical panel in order to

disconnect the power input.

3. A condenser disconnect shall be field-supplied.

D. Microprocessor Controller

1. Monitoring and configuration: The display interface shall allow monitoring and configuration

of the air conditioning unit through a menu-based control. Functions include status reporting,

set-up, and temperature set points. Four LEDs report the operational status of the connected air

conditioning unit.

2. Controls: The microprocessor controller shall come equipped with control keys to allow the

user to navigate between menus, select items, and input alpha numeric information.

3. Alarms: The microprocessor controller shall activate a visible and audible alarm in the

occurrence of the following events:

a. Cool Fail

b. Air filter clogged

c. Return air sensor fault

d. Supply air sensor fault

e. Rack temperature sensor fault

f. High discharge pressure

g. Low suction pressure

h. Fan fault

i. Water detected

j. Condensate pump fault

k. Air filter run hours violation

l. Group communication fault

m. Supply air high temperature violation

n. Return air high temperature violation

o. Filter DP sensor failure

p. Suction pressure sensor failure

q. Discharge pressure sensor failure

r. Persistent high discharge pressure fault

s. Rack inlet temperature high violation

t. External communication fault

Voltage kAIC

200-240V 50/60Hz 50

380-415V 50Hz 36

460-480V 60Hz 22

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APC ACRD500 Service Manual Page 56