Figure C- 



! i 

 XBT chart annotated. 



thermograph System", and on the NAVO- 

 CEANO Plamied Maintenance Card (NAVO- 

 CEANO 10510/14 (5-68)). 



The launcher discharge tube should be 

 checked periodically for salt buildup. Any salt 

 should be removed with fresh water and a cloth 

 swab. 



The insulation around the canister contacts in 

 the launcher breech should be inspected for con- 

 tamination before inserting a canister. Any con- 

 tamination should be removed with a cloth 

 dipped in alcohol. 



Installation of a new chart roll, chart align- 

 ment, and preventive maintenance only should 

 be performed by the operator. Recorder trouble 

 shooting maintenance should be performed only 

 by an electronic tecluiician. Recorder and test 

 canister should be calibrated every 6 months, 

 and this calibration should be performed only 

 by a calibration electronic technician. 



It is important that the A2-A test canister 

 is kept with the XBT system at all times. It 

 should be considered an integral component of 

 the system. 



Change 1—1970 



C-13 



