Harris DX 25U, Техническое руководство

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CAUTION
KEEP THE PA CABINET EXHAUST AND ACCESS HOLES COV-
ERED DURING INSTALLATION!
2.5
Factory Test Data
During installation and initial turn on procedure, reference will be
made to FACTORY TEST DATA. This data is normally packed with
the transmitter or may be inserted in the technical manual. It includes
meter readings, measured performance data, frequency determined
parts and adjustments for your transmitter.
2.6
Transmitter Placement
Refer to the DX-25U Cabinet Outline, 839-7855-152, in the
Drawing Package for important DIMENSIONS, WEIGHT, AIR
FLOW, and ELECTRICAL information.
The DX-25U consists of three main components:
•
PA Cabinet
•
Output Network Cabinet
•
Step Start Panel
The PA and Output Network Cabinets are bolted together on-site
after positioning and leveling.
Depending on the height of the doors at the site, the Cabinets
may have to be removed from their skids. Also the Combiner
Crossover bar and cover on top of the PA Cabinet may have to
be removed and re-installed later.
2.6.1
Removing the Combiner Crossover Bar
NOTE
Only remove the crossover bar if additional height clearance is
needed to move the transmitter during installation.
•
Remove the rear access panels from the RF Amp Compart-
ment.
•
Locate the combiner crossover bar on top of the Power
Amplifier Cabinet. Refer to sheet 1 of the Cabinet Outline
Drawing, 839-7855-152.
•
Remove the 14 screws that hold the Combiner Cover in
place to expose the combiner bar and the Neutralization
Board. Remove the screws holding the Neutralization
Board and unplug J1.
•
Remove the two 3/16 inch Allen head bolts holding each
end of the crossover bar to the combiner bar and remove
the bar and Neutralization Board.
Once the PA Cabinet is in position, it will be necessary to put the
Combiner bar back in place. When tightening the hex head bolts,
torque to 80 inch pounds. After the bar is installed, verify that J1
on the Neutralization Board is connected.
2.6.2
Cabinet Positioning
Remove shipping bolts and carefully move cabinets off of the
skids. The PA Cabinet is the heaviest and should be positioned
first. The center of gravity is near the Power Supply/Driver
Ground Strap or Rigid Transmission Line
Welding Torch Set
Oxygen and Acetylene Tanks
Welder’s Mask or Goggles
Power Band Saw (can be rented) and Extra Blades
Silver Solder 1/16 inch diameter, 30%-45%, Hard Stay-
Silv #45, Aladdin #45,
HARRIS part number 099 0002 238
Paste flux (Engelhard Ultra-Flux 1 lb jar) HARRIS part
number 099 0002 241
(HARRIS part number 086 0004 040, 16 oz bottle)
Muriatic Acid (quart)
Rubber Hammer
Garden Hose
Baking Soda (two 1-pound boxes)
Three plastic 5-gallon buckets or containers with open tops
Scotch Brite, Scuff Pad/Sand Paper
Steel Wool
Emery Cloth (roll type like plumber uses)
Basic Wiring and Installation
Wire Strippers
Wire Cutters
Lugging Tool
Socket Set 3/8 inch drive with 6 inch extension
Table or Bench
Carpenters Square
Level
Plumb Bob
Chalk Line
Hacksaw and Extra Blades
Wrenches
Prybar
Crowbar
Rope
Saw Horses or Cutting Table
Cable Hoist or Chain-Fall Hoist
Ladders
Files
25-Ft Tape Measure
Claw Hammer
Materials Not Supplied
105kVA wire (See Cabinet Outline for Size)
Copper Strap
Electrical Conduit
Transmission Line
Circuit Breaker or Fused Disconnects
Transmission Line Matching Hardware
Audio Cable
Remote Control Cable
Table 2-1. Recommended Installation Materials
NOT SUPPLIED
DX-25U
2-2 888-2297-002 Rev. AA: 8/9/2000
WARNING: Disconnect primary power prior to servicing.