Maintenance 
Marathon MM  Rev. D7 Jul 2017  81 
11 Maintenance 
Our sales  representatives  and  customer  service  are  always at  your disposal for questions  regarding 
application assistance, calibration, repair, and solutions to specific problems. Please contact your local 
sales representative if you need assistance. In many cases, problems can be solved over the telephone. 
If  you  need  to  return  equipment  for  servicing,  calibration,  or  repair,  please  contact  our  Service 
Department before shipping. Phone numbers are listed at the beginning of this document. 
 
To prevent possible electrical shock, fire or personal injury follow these guidelines: 
  Have an approved technician repair the product. 
11.1 Troubleshooting Minor Problems