Installation Instructions

Handling

Remove the inner shipping box from the outer shipping box. The EIO should be handled by its yoke, painted red, or its aluminum base plate (usually gold alodyned).

CAUTION:

NEVER HANDLE THE EIO BY THE COOLANT LINES, ELECTRICAL LEADS, TUNER, OR COLLECTOR

Remove the EIO from the inner shipping box, observing the precautions listed above. Retain all packing material for future EIO transportation.

NOTE:

The steel inner liner of the shipping container is a functioning magnetic shield.

Mounting

CAUTION:

THE RARE EARTH PERMANENT MAGNETS CAN POSE AN ATTRACTION HAZARD. DISTURBING THE STRY EXTERNAL MAGNETIC FIELD OF THE EIO MAY DETRIMENTALLY AFFECT EIK PERFORMANCE. ALL WRENCHES AND SCREWDRIVERS USED TO MOUNT AND ALIGN THE EIK MUST BE NON-MAGNETIC. MAGNETIC MATERIALS MUST BE KEPT AT LEAST 6 INCHES (15CM) FROM THE EIK, OTHER MAGNETS MUST BE KEPT AT LEAST 12 INCHES (30CM) AWAY.

The EIO may be mounted using holes provided with .250" hardware. Clearance is required for the electrical leads and the collector cooling assembly. 

Cooling

General

This EIK must be water-cooled.

For proper operation and long life, liquid-cooled EIKs require careful attention to the maintenance of adequate water flow and purity.

The minimum flow as specified on the Test Data Sheet must be maintained at all times when the EIK is in operation. Inadequate flow of water at high temperature will cause formation of steam bubbles at the collector surface where the water is in direct contact with it . This overheating will result in permanent damage to the EIK.

Water with contaminant levels that exceed the purity requirements will cause corrosion and scaling, this includes ordinary tap water. Unchecked corrosion of the metals in the EIK coolant passages reduces operating life. Scaling obstructs cooling passages preventing efficient heat transfer resulting in overheating and permanent damage. Continuous filtering, deionizing, and oxygen removal is necessary for maintaining high water purity.

Coolant

Deionized water is the recommended coolant for EIK's.

For protection against low temperatures, the use of water heaters or draining the system during non-operating periods is advised.

If a freezing points depressant is necessary, an uninhibited solution of ethylene glycol and water is the recommended coolant. Inhibited ethylene glycol cannot be used with coolant purification systems, because the inhibitors will saturate the ion-exchange resin and render it useless.

In cases where ethylene glycol is required, the coolant flow must be increased to allow for the poorer heat capacity and higher viscosity of the ethylene glycol solution. Before ethylene glycol is used in CPI EIK's, the CPI Marketing Department must be consulted for specific recommendations.

WARNING:

FOR LIQUID COOLED COLLECTORS, ALL METAL COMPONENTS OF THE LIQUID-COOLING SYSTEM (EXCEPT THE EIK COLLECTOR) MUST BE GROUNDED TO PREVENT CHARGE ACCUMULATION (POTENTIALLY COLLECTOR TO BODY VOLTAGE) THROUGH THE COOLANT POSING AN OPERATOR HAZARD. REFER TO LIQUID COOLED COLLECTOR HAZARD IN Protective Measures (EIO)

Coolant Connections

Coolant lines are attached using swagelock nuts and nylon ferrules. Excessive force must not be used when attaching the coolant hose. Adequate torque can be obtained using fingers only.

CAUTION:

IF MORE FORCE SEEMS TO BE REQUIRED, DISMANTLE AND EXAMINE THE CONNECTION

Cooling fluid must enter at the collector and exit at the body connector of the EIO.

A coolant flow interlock should be used to ensure proper coolant flow exiting the EIO.

A singing or hissing noise emanating from the EIO may indicate inadequate coolant flow.

CAUTION:

TEST WATER CONNECTIONS FOR LEAKS PRIOR TO APPLICATION OF HIGH VOLTAGES. CORRECT ANY COOLANT PROBLEMS IMMEDIATELY.

Connections

Electrical Connections

CAUTION:

ALTHOUGH THE HIGH VOLTAGE LEADS ARE ADEQUATELY INSULATED; THEY SHOULD BE SHIELDED FROM ACCIDENTAL CONTACT WITH PERSONNEL BY A SUITABLE GROUND SHIELD OR GROUNDED ENCLOSURE. TO PREVENT OR REDUCE CORONA, THEY MAY REQUIRE AN INCREASED AIR GAP OR INCREASED INSULATION.

The electrical connections to the EIO are color-coded as follows:

YELLOW  -  HEATER(-ve)

WHITE  -  CATHODE & HEATER (+ve)

BLUE  -  COLLECTOR

BROWN  -  BODY

RED  -  ANODE

PURPLE  -  BODY GROUND INTERLOCK

RF Connections

RF connections to the EIO are made through a waveguide flange.

The waveguide flange connection must be made with care in order to avoid gaps between the mating surfaces. Avoid over-tightening the flange screws.

CAUTION:

IT IS ESSENTIAL THAT THE MATING FLANGE BE FLAT

The EIO window is .002" thick.

CAUTION:

UNDER NO CIRCUMSTANCES ALLOW SOLID OBJECTS TO ENTER THE OUTPUT WAVEGUIDE