IT Cooling
LogiCool
OnRak
IT Cooling
39
Technical, Installation and Maintenance Manual :6912497 V1.8.0 _08_2014
Rack Pressure
Management
The rack pressure management comes in two parts for onsite fitment.
Part one (Factory Fitted)
A static pressure ring (Negative pressure) is fitted behind the coil guard. An airflow tube comes
out from the controller and is then routed around the drip tray.
Part two (Site Fitted)
A pressure tapping is then fixed to the inlet of the servers (+VE Positive Pressure) by the bracket
supplied loose.
The tubing leaves the OnRak door and must make its way diagonally towards the hinged side of
the front of the rack (so that both doors can be opened without obstruction.)
Blue
±
ve (Negative pressure)
Red + ve (Positive pressure)
Care must be taken when routing the tubing around the server cabinet (Any kinks in the tubing
will give faulty readings).
The server cabinet differential pressure is then controlled by the OnRak ensuring air is not forced
over the IT equipment.
The pressure tapping is fitted with M3 screw
to the bracket.
M5 Nut and bolt is then used to mount the
bracket to the server door. The bracket is
slotted to accommodate different mesh
pitch.
Positive
Pressure
(Front of
server)
(Negative
Pressure
(Within
OnRak)
