Harris Maxiva ULX, Техническое руководство

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10/6/10 888-2629-200 2-37
WARNING: Disconnect primary power prior to servicing.
Section 2 Installation
Maxiva ULX COFDM Series
STEP 2
Close cabinet supply and return line valves . Keep closed until initial
leak testing, is completed to keep contaminants out of the combiner and
splitter chiller plates.
STEP 3
Open cabinet(s) bypass valve(s). The cabinets should remain bypassed
until leak testing is complete.
STEP 4
Close all cabinet manifold drain valves .
STEP 5
Open all system supply and return valves. Opening the system valves
allows coolant to flow through the entire system except for the cabinets.
STEP 6
Fill the cooling system with distilled water. The cooling system must
be initially charged with distilled water to a static pressure of 10 PSIG.
This is accomplished by attaching the charging pump to a low point in
the coolant system or to the fill connection on the pump module
assembly (see Figure 2-1). As the system is charged with water air will
be bled from the automatic purger. Additional air can be bled from the
system by opening vents located at system high points until water comes
out of each vent. During the filling and bleeding operation, keep the
static pressure at or slightly below 10 psig. The static pressure will drop
as air is bled from the system. Once air bubbles stop forming in the sight
glass and the sight glass is full of liquid turn off the charge pump.
a.
Record the amount of liquid required to initially fill the system,
including the make up water required when the pumps have been run
and the remainder of air is bled from the system. This information
will be used later, during flushing, to determine the amount of
trapped water remaining in the system after it is drained.
One method of tracking the amount of coolant used in the system is to start the fill
process with a 30 gallon container (clean 30 gallon plastic garbage can will work). Fill
the container with distilled water to a level about two inches below the rim. Mark this
initial full level with a permanent marker. Use a suction filter attached to the inlet side
of the charge pump and draw water for the initial fill from the container and mark the
new level. The difference between the full mark and this mark is the system capacity.
After the initial rinse and leak tests drain the system back into the container and mark
that level. The difference between the initial full level and this new level is the amount
of water trapped in the system. This trapped value can be used later when adding the
glycol water solution. Extra glycol will need to be added to account for this trapped
water in the system to get the specified 50/50 glycol/water mixture desired.
NOTE:
Static pressure is the system pressure measured with the pumps deenergized.