TM 5-6635-386-12&P (6) The only vacuum cleaners that shall be used are those with absolute filters which have been tested for filtration efficiency. Testing filtration efficiency is mandatory each time the filter is replaced, and each time its contents are emptied. c.  Radioactive  waste  shall  be  disposed  of  in  a manner to comply with AR 385-11. MAINTENANCE 4-35. TESTER MAINTENANCE a.    Only    limited    and    specific    maintenance    is authorized    for    the    tester.    Personnel    authorized    to perform  maintenance  are  the  operator  and  the  LRPO. Neither   the   operator   nor   the   LRPO   are   authorized   to repair the tester (see Para 4-37). b. Operator performed maintenance is limited to the following: (1)  Cleaning  the  testers  external  surfaces  and shutter assembly. (2) Changing fuses. (3) Changing batteries. (4) Charging batteries. (5)   Perform   leak   test   in   absence   of   qualified LRPO or ALRPO. c. LRPO performed maintenance is limited to the following: (1) Perform the leak test. (2)   When   required,   the   LRPO   shall   perform maintenance    that    is    normally    accomplished    by    the operator. 4-36. TESTER REPAIR AND DISPOSAL a.  A  tester  requiring  repair  or  disposal  must  be returned to a designated manufacturer’s repair facility. b. Do not use the tester when it fails to operate in accordance  with  preoperation  checks  described  in  the operator’s manual. c. Contact the NICP for disposition instructions. See Para 4-38a. d.   Contact   the   Commander,   TACOM,   ATTN: AMSTA-MVC if all operating modes of the tester are not functioning  correctly.  Users  are  requested  to  submit  a Quality Deficiency Report (QDR) on Standard Form 368 in  accordance  with  DA  Pam  738-750  to  the  address  in Para 4-39b. ASSISTANCE 4-37.   SAFETY.   Copies   of   surveys,   leak   test   results, incident  reports,  other  applicable  data  and  reports,  DA Form 3252-R, and questions pertaining to the tester and personnel safety shall be directed to: Commander US Army Tank-Automotive Command ATTN:  AMSTA-CZ (Safety Office) Warren, MI 48397-5000 Telephone: Autovon: 786-6121 or 61 94 Commercial:  (313) 574-6121 or 6194 After office hours: Autovon: 786-5511 Commercial:  (313) 574-5511 4-38. TESTER   REQUISITION,   AND   DISPOSITION. Questions   or   requests   pertaining   to   tester   requisition, and disposition shall be directed to: a. Commander US Army Tank-Automotive Command ATTN:  AMSTA-FHV (NICP) Warren, MI 48397-5000 Telephone:  Autovon:  786-5827 or 7787 Commercial:  (313) 574-5827 or 7787 Questions   pertaining   to   tester   maintenance   shall   be directed to: b. Commander US Army Tank-Automotive Command ATTN:  AMSTA-MVC (Maintenance) Warren, MI 48397-5000 Telephone:  Autovon:  786-8298/7358 Commercial:  (313) 574-8298/7358 4-13