background image

 

CPI Confidential V 11 

June 12, 2009 

 
 

S-Band DFTS D50 Maintenance Procedure

  

V 1.1

 

 

Introduction 

 
CPI’s  S-band  Klystrons  may  require  channel  changer  plunger  cleaning  and  lubrication 
periodically. This is generally only the case when in normal operation there is extensive 
tuner usage and/or the klystron is exposed to an extremely harsh environment.  
 
This document describes the S-band Klystron channel changer cleaning procedure which 
was  developed  for  implementation  at  CMP  Georgetown  or  at  approved  CPI  service 
centers.  Customer  implementation  is  at  the  customers  own  discretion.    Should  the 
customer decide to perform this operation, CPI cannot be responsible for any damage to 
the klystron by the incorrect application of this procedure or by improper handling of the 
klystron. 
 
The procedure will take a few hours. It should be implemented by qualified technicians 
with  knowledge  about  CPI  klystron  products.  The  successful  maintenance  of  the  tuner 
may be difficult to perform while it is inside the KPA. The option of taking the klystron 
out of the KPA prior to implementing this procedure should be seriously considered. 
  
If the klystron/KPA is in the power-on state, it needs to be powered down in a controlled 
manner as described in the operation manual allowing sufficient time for the collector to 
cool. 
 
 
 
 
 
 
 
 
 

Содержание S-Band DFTS D50

Страница 1: ...e customers own discretion Should the customer decide to perform this operation CPI cannot be responsible for any damage to the klystron by the incorrect application of this procedure or by improper handling of the klystron The procedure will take a few hours It should be implemented by qualified technicians with knowledge about CPI klystron products The successful maintenance of the tuner may be ...

Страница 2: ...ture loosening the four thumbscrews locating on the side mounting plates and then disconnecting and removing the channel changer controller caution care must be taken as you remove the channel change controller because a D50 connector exists between it and the motor module from the motor module Channel changer controller assembly D15 connector Thumbscrews two on each side of controller bracket mou...

Страница 3: ...re above Remove the tuner cover shown in above picture unfastening 4 screws using a stubby Phillips screwdriver taking care in the strong magnetic field Preferably use non magnetic tools Right side controller bracket showing two screws Left side controller bracket showing screw Tuner cover right side screws two screws also on left side Tuner cover ...

Страница 4: ...C interface cable supplied with each klystron CPI P N 764058 Plug the DB15 f connector marked CONTROLLER into the DB15 m port on the channel changer controller assembly Connect DB15 m connector marked A2J7 to the cable coming from the KPA marked the same This will provide required power to the channel changer controller assembly Connect the DB9 f connector marked LAPTOP to your laptop s serial por...

Страница 5: ...nd it to the HOME position If the motors are struggling to execute this command give them a helping hand A gentle turn of the struggling pulley in the same direction the motor is trying to turn should suffice Be extremely careful doing this Caution Do NOT place fingers inside the belt loop as they could be pinched by the pulley Now turn the KPA power OFF This removes the holding current from the m...

Страница 6: ...ower Once the tuner initialization is complete use FELIX software to select the highest frequency channel as shown in picture below This will allow access to the driving screw threads to be inspected Home position marker at least half way into the optical sensor Optical sensor Tuner the highest channel Exposed driving screw thread Optical sensor Home position marker ...

Страница 7: ...ical sensor Please do NOT use cotton Q tips to clean threads This could leave cotton fibers on the threads After cleaning allow sufficient time for solvent to dry Inspect the threads for the dirt residue The entire exposed thread should now be coated in PTFE based grease e g Super Lube Synthetic Grease with Syncolon PTFE For more information go to www super lube com Make sure that excess grease do...

Страница 8: ...s stuck at any point or errors are reported on FELIX repeat the cleaning and lubrication procedure and retest Note As a guideline travel from Channel 1 to 50 should take about 12 seconds with well functioning channel changers Channel change faults will not be shown on the KPA until this time exceeds 30 seconds The HOME process will take longer than 30 seconds but only happens when KPA is powered o...

Отзывы: