Harris Maxiva ULX, Technical Manual

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B-4 888-2629-200 10/6/10
WARNING: Disconnect primary power prior to servicing.
Maxiva ULX COFDM Series
If additional amplifier cabinets are to be added to the system in the future, consider
these plans when sizing and laying out the cooling system. Doing so now may slightly
increase the installation cost, but will greatly lower the cost of conversion later.
The plumbing lines must be type “M” hard drawn copper with soft silver soldered joints
(96.5% Tin, 3.5% Silver; Aladdin #450 silver solder or equivalent). An adequate
amount of soft silver solder (Harris part 086-0004-038) is supplied with the plumbing
kit. Good silver brazed joints are acceptable but not required. A poorly done brazed
joint is much harder to repair than a soft silver solder joint.
B.2.3 Standard Coolant Plumbing Practices
Good plumbing equipment installation practice is required to ensure system integrity.
Appropriately measured, cut, deburred, supported and soldered copper pipe sections,
facilitate mechanical integrity of the coolant transportation system. The “glue” that
holds the system together is quality soldering.
This process includes the need to condition all surfaces to be soldered by thorough
cleaning with emery cloth or a non-sudsing scouring pad, with an even application of
flux, liquid flux being preferred. This applies to all common surfaces of plumbing
fittings and straight pipe sections. Any improperly cleaned and poorly fluxed surfaces,
either one or both, will not allow the solder to flow properly for continuous adherence
of the solder to the two surfaces being soldered. After cleaning and fluxing, a
continuous and evenly distributed application of heat without overheating will result in
an evenly distributed flow of solder between the surfaces being soldered for a plumbed
system that does not leak. Remember that solder flows from a colder surface to a hotter
surface no matter the orientation of the surfaces being soldered.
Since considerable heat is necessary to make the solder flow, some torch black and
flaking may develop inside the pipe. Before hanging the line, it is recommended that a
hose and wire brush or rag be used to clean and flush the inside of the line where
possible. It is also recommended to wash the flux off the final soldered joint to prevent
future tarnishing.
NOTE:
Keep in mind that an over application of solder can result in solder balls falling in
to the associated piping with the possibility of water flow restriction and/or
blockage. Also, an under application of solder can result in water leakage paths
between the common surfaces of the fitting being soldered.
Propane or Mapp gas is the recommended fuel for soldering copper plumbing pieces.
These gasses are available in small metallic bottles that mate directly to appropriate
torches. Also, a “Turbo Torch” or equivalent with appropriately sized regulator and
hose combination can be used with larger gas tanks (large cooking stove tank). If these