Frequently asked questions, Hp mc-series 5042 rack frequently asked questions – HP Modular Cooling System User Manual
Page 57
Frequently asked questions 57
Frequently asked questions
HP mc-Series 5042 Rack frequently asked questions
Question
Answer
What cooling capacity ranges are
available in the MCS 5042 unit?
The cooling capacity of the heat exchanger unit depends on the water
supply temperature and the server inlet set point. The MCS 5042 unit
is capable of cooling rack-mounted components consuming up to 50
kW of electrical power.
Is special IT equipment required for
use with the MCS 5042 unit?
No, all IT equipment that uses the front-to-back cooling system (99% of
IT equipment) can be used without restriction in conjunction with the v
unit.
Does the additional heat from the
MCS 5042 unit increase the room
temperature?
In some cases, up to 10% of the total power supplied to the rack may
be lost to the room, depending on the server air setting and the room
temperature.
Can the level of heat removal be
regulated in proportion to the waste
heat generated?
Yes, the control system automatically adjusts the water flow and air
flow to remove heat generated in the rack.
How is water connected to the MCS
5042 unit?
The water is connected to the unit using a 1.25-inch flexible hose and
quick-disconnect automatic shutoff hose fittings. For more information,
see the HP mc-Series 5042 Rack Hook-Up Kit Installation Instructions.
Can the MCS 5042 unit operate with
the front or rear door open?
Yes, due to the air curtain effect, the air will function normally with little
air lost. When the doors are open during operation, room air mixes
with air supplied to the servers.
Does the MCS 5042 unit require
maintenance?
No, assuming that the water quality is maintained, the MCS 5042 unit
is maintenance-free. For more information about water quality, see the
HP mc-Series 5042 Rack Site Preparation Guide on the HP website.
Is a false floor necessary?
No, a false floor is not necessary to operate the MCS 5042 unit. For
more information, see the HP mc-Series 5042 Rack Site Preparation
Guide on the HP website.
Does condensation form?
During normal operation some condensation may form, but the MCS
5042 unit condensation control system ensures that the condensation
does not reach any rack-mounted components or cause any damage.
In most cases, the condensation evaporates prior to reaching the MCS
5042 unit condensation control system.
How does the MCS 5042 unit control
humidity?
There is some room-air interchange, so the moisture content of the air
inside the unit is the same as the room.
Does the air flow within the MCS
5042 unit produce static electricity?
Very low humidity levels in the chilled air may produce static
electricity. However, static electricity is not a problem if the MCS 5042
unit is operated at the specified settings located in the HP mc-Series
5042 Rack Site Preparation Guide and the Environmental
specifications section.
Why do I get an extra line feed sent
from Microsoft® Windows® when I
access the serial interface using an
HP serial console switch?
Enter these commands while logged in as Admin on the HP serial
console switch console port (where port x is the port connected to the
MCS management module):
port x set out lf=strip
port x set flow=Xonxof