Harris Maxiva ULX, Technical Manual

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10/6/10 888-2629-200 B-5
WARNING: Disconnect primary power prior to servicing.
Maxiva ULX COFDM Series
gas sources are not available, use of acetylene gas with an acetylene only torch is
acceptable. In any event, only skilled plumbing and soldering practitioners,
knowledgeable of the specific soldering equipment being used, should perform the
required work.
NOTE:
A soldering combination of silver bearing solder, i.e. Harris (not Harris Broad-
cast) Stay-Brite R (086-0004-038), and “Stay Clean” liquid soldering and tinning
flux (086-0004-040) or equivalent, is recommended. Also, pipe thread joints
should be conditioned with Teflon tape (299-0018-000) and a thin film applica-
tion of a smooth, non-hardening thread sealing, compound with integrated Teflon
is recommended, i.e. Locktite #565, or “Gasoila” (690-0017-000), prior to mat-
ing any two threaded pieces together.
When connecting threaded plumbing fittings, use a layer of teflon tape and some pipe
dope
on the male fittings . Do not use pipe dope on the female fittings because it will
bunch up on the inside surface of the plumbing and interfere with normal cooling
system operation. It is difficult to remove excess pipe dope from inside the system.
A final comment about the installation process centers around the need for the
discipline of personnel in and around the cooling system installation area. Under no
circumstances should anyone, cooling system installer and/or workers in other
disciplines and areas, walk on pipes and fittings that have or have not been positioned
and soldered. Although probably convenient for passage between adjacent work areas,
walking on already soldered pipe can and historically has led to premature loss of solder
joint integrity, among other self evident undesirable integrity results.
Caution
IF FREEZING CONDITIONS EXIST DURING CHECKOUT AND FLUSHING
PROCEDURES, FLUSHING PROCEDURE AND SUBSEQUENT FILL WITH FINAL
GLYCOL/WATER MUST BE FINISHED BEFORE STILL WATER IS ALLOWED TO
REMAIN IN HEAT EXCHANGER. IF PROCEDURE CANNOT BE FINISHED, CARE
MUST BE TAKEN TO PREVENT WATER FROM FREEZING IN OUTSIDE COOLING
SYSTEM EQUIPMENT. IF WATER REMAINS IN OUTSIDE EQUIPMENT LONG
ENOUGH TO FREEZE, THE UNITS WILL BE DAMAGED. PUMP A MIXTURE OF
GLYCOL/WATER INTO OUTSIDE EQUIPMENT TO PREVENT DAMAGE.
B.3 Routine System Operation and Maintenance
a. As a general rule of thumb, the entire system including all cabinets should be
inspected for leaks on a routine basis. And any indication of a potential leak noted
and corrected. The transmitter cabinet is equipped to detect internal leaks. For the
rest of the system plumbing; however small leaks could evade detection.