background image

ii

Warning Statements

The following safety warnings appear in the text where there is danger to operat-

ing and maintenance personnel, and are repeated here for emphasis.

On page 7 and 9.

On page 10.

On page 14.

Caution Statements

The following equipment cautions appear in the text and are repeated here for 
emphasis.

On page 7.

This symbol indicates that a shock hazard exists if the precau-

tions in the instruction manual are not followed.

The caution symbol appears on the equipment indicating there 

is important information in the instruction manual regarding 

that particular area.

This symbol indicates that the unit radiates heat and should not 

be touched while hot.

This symbol appears on the equipment and indicates the 

requirement for separate collection of discarded electrical and 

electronic equipment in accordance with the European Union 

Directive 2002/96/EC.

WARNING

Never attempt to disconnect the equipment from the transmission line while RF 

power is being applied. Leaking RF energy is a potential health hazard.

WARNING

Never attempt to connect or disconnect RF equipment from the transmission 

line while RF power is being applied. Leaking RF energy is a potential health 

hazard.

WARNING

The resistor used in this load consists of a resistive film on a special substrate. 

If the substrate is broken, there will probably be sharp pieces or splinters 

inside the load housing. Caution should be exercised to avoid possible injury.

CAUTION

DO NOT disconnect the water flow switch leads from the control assembly. Any 

operation of the load without a properly functioning cooling system will cause 

almost immediate destruction of the resistor element.

Summary of Contents for TERMALINE 8745 Series

Page 1: ...o 44139 Sales Technical Support 440 248 1200 866 695 4569 toll free Sales email sales bird technologies com Technical Support email atechapp bird technologies com Copyright 2010 by Bird Electronic Cor...

Page 2: ...I am not blank...

Page 3: ...djust Alone Under no circumstances should any person reach into an enclosure for the purpose of service or adjustment of equipment except in the presence of someone who is capable of rendering aid WAR...

Page 4: ...irement for separate collection of discarded electrical and electronic equipment in accordance with the European Union Directive 2002 96 EC WARNING Never attempt to disconnect the equipment from the t...

Page 5: ...EL INSTRUMENTO BENUTZUNG WIRD DAS GER T AUF ANDERE WEISE VERWENDET ALS VOM HERSTELLER BESCHRIEBEN KANN DIE GER TESICHERHEIT BEEINTR CHTIGT WERDEN UTILISATION TOUTE UTILISATION DE CET INSTRUMENT QUI N...

Page 6: ...GELTEN NUR F R GESCHULTES FACHPERSONAL ZUR VERMEIDUNG GEF HRLICHE ELEKTRISCHE SCHOCKS SIND WARTUNGSARBEITEN AUSSCHLIE LICH VON QUALIFIZIERTEM SERVICEPERSONAL DURCHZUF HREN ENTRENTIEN L EMPLOI DES INST...

Page 7: ...NCHER LE VERROUILLAGE L METTEUR AVANT EMPLOI CONECTE EL INTERBLOQUEO AL TRANSMISOR ANTES DE LA OPERACION VOR INBETRIEBNAHME VERRIEGELUNG AM SENDER ANSCHLIESSEN PRIMA DI METTERE IN FUNZIONE L APPARECCH...

Page 8: ...to this manual refer to the part number and revi sion on the title page Literature Contents Introduction Describes the features of the load resistor lists equipment sup plied and optional equipment a...

Page 9: ...lity 5 Flow Switch Optional 6 Control Box Optional Item 6 Pre Operational Checkout 6 Chapter 4 Operating Instructions 7 General 7 Operation as a Load Resistor 7 Operating as an RF Wattmeter 8 Shutting...

Page 10: ...Per Model Type 20 Model 8745 3 1 8 EIA Connector 50 ohms 20 Model 8746 3 1 8 Unflanged Connector Flush Center Conductor 50 ohms 20 For Both Models 20 Optional Equipment 21 Control and Water Flow Parts...

Page 11: ...mation on applications involving pulse type signals should be obtained directly from Bird Electronic Corporation The Model 8745 and 8746 equipment consists of z Load resistor z Instruction Manual Note...

Page 12: ...Introduction 2...

Page 13: ...n of these enclo sures provide a very accurate 50 ohm termination over the specified frequency range of this load 1000 Hz to 900 MHz The absence of intermediate cooling fluids considerably simplifies...

Page 14: ...ntrol circuit provides instantaneous fail safe protection of the transmitter and load in the event of even a momentary interruption of the cooling water supply This protection is necessary because dis...

Page 15: ...d the center conductor cou pling bullet 4 Rotate the load so that the warning label shows and the outlet water tube is placed to the best advantage 5 Secure the clamps or bolt set firmly and evenly ar...

Page 16: ...ed to suit requirements The pilot lamp on top of the box is a safe operation indicator it lights only when AC power is on and an adequate water supply is flowing After the pilot lamp lights up a 12 2...

Page 17: ...Load Resistor 1 Turn on the AC power if the load is equipped with an interlock system 2 Turn on the water supply 3 Check for proper interlock operation 4 Check that all coaxial power line connections...

Page 18: ...e to the input connector of the load resistor Consult the Bird Catalog or contact the Company 1 Perform the the same functions as a Load Resistor See Operation as a Load Resistor on page 7 2 Rotate th...

Page 19: ...o residue to clean the hard to reach internal portions Note Always handle the load with care to prevent subjecting it to unnecessary shock or impact Inspection With the rugged and simple construction...

Page 20: ...d the value for future comparison Check and record the resistance of the load periodically according to use Measuring the DC Resistance 1 Turn off RF power and interlock circuitry before any electrica...

Page 21: ...straight off Note It may be necessary to rock the chamber gently while care fully pulling it off The inner flow tube 9 will usually come out with the water chamber assem bly being held to it by the c...

Page 22: ...w 6 Req d Water Chamber With O Ring Inner Seal O Ring Outer O Ring Inner Resistor Sleeve Resistor Outer Flow Tube Load Housing O Ring Inner Flow Tube Hose Nipple 2 Not used in Moduload Application 6 3...

Page 23: ...in the event of resistor failure the resistor substrate will remain intact 2 Examine the inside of the load housing assembly for any apparent damage to the internal parts 3 Do one of the following z I...

Page 24: ...resistor cap assembly 10 in the water chamber for this procedure 8 Replace the water chamber 3 gently rocking and twisting the chamber to achieve the proper flat seat on the outer housing Note If the...

Page 25: ...g and water chamber 11 Replace the resistor Models 8745 8746 Termaline Load Resistor cap assembly in the water chamber 12 Push the resistor firmly to the bottom Installing a Replacement Resistor 1 Ins...

Page 26: ...n repairable if found defective it must be replaced For replacement proceed as follows 1 Ensure the following is shut off z RF power z 115 230 VAC z Transmitter interlock supply 2 Disconnect the water...

Page 27: ...what is covered in this instruction book will require return of the equipment to Bird Electronic Corporation for service See Customer Ser vice on page 18 Storing Note If the load is to be unused or s...

Page 28: ...or any reason request an RMA through the Bird Technologies website link shown below All instruments returned must be shipped prepaid and to the attention of the RMA number Bird Service Center 30303 Au...

Page 29: ...F Water Connections 3 4 inch Standard Hose Thread Cooling Water Potable Water Standards for potable water have been established by the U S Public Health Service at a maximum of 500 ppm of total dissol...

Page 30: ...Resistor Contact 8755 026 Resistor Holder 923 8740 025 Instruction Sheet 8740 020 5 099 O Ring 568 116 5 567 O Ring AS568A 125 5 1127 O Ring 568 123 5 1128 O Ring 568 222 Sili 8110 059 O Ring 568 211...

Page 31: ...sembly 230 V 8750 101 1 8750 101 2 1 Relay retaining clamp 8630 193 1 Time delay relay 115 V Time delay relay 230 V 5 1664 5 1665 1 Indicator light 8750 106 1 Incandescent lamp 115 V Incandescent lamp...

Page 32: ...ch claim for breach of these war ranties shall be deemed to be waived by Buyer unless made in writing within ten days from the date of discovery of the defect The above warranties shall not extend to...

Reviews: