User guide
TS 870 TRANSFER SWITCH 
PM062 REV 5 08/05/05  1  Thomson Technology 
1.  PRODUCT REVISION HISTORY 
The following information provides an historical summary of changes made to this product since the 
original release. 
Operating & Service Manual Version 
Rev 0 04/11/19 
Original release. 
Rev 1 05/03/08 
Changes  to  incorporate  reversing  style  ATS  Motor  for  100-250A 
transfer switches. 
Rev 2 05/05/26 
Revisions to Section 8 and Section 18. 
Rev 3 06/05/08 
Revisions to Section 15. 
Rev 4 07/07/31 
Changes to Incorporate new S-Style 400A mechanism 
Rev 5 08/03/05 
Changes  to  Incorporate  new  S-Style  mechanism  (100A,  150A, 
200A, 250A, 600A, 800A) 
Contact Thomson Technology, to obtain applicable instruction manuals or if in doubt about 
any matter relating to installation, operation or maintenance.  Soft copy of the most current 
version is available at www.thomsontechnology.com. 
NOTE:  All information contained in this manual is for reference only and is subject 
to change without notice. 
2.  EQUIPMENT STORAGE 
The following procedures are required for correct storage of the transfer switch prior to installation. 
2.1.  ENVIRONMENTAL CONDITIONS 
CAUTION!!! 
Failure  to  store  and  operate  equipment  under  the  specified  environmental  conditions  may 
cause equipment damage and void warranty. 
2.1.1.  EQUIPMENT STORAGE 
The transfer switch shall be stored in an environment with a temperature  range not 
exceeding  -4°  to  +158°  Fahrenheit  (-20°  to +70°  Celsius) and a  humidity range not 
exceeding 5%-95% non-condensing. Before storing, unpack sufficiently to check for 
concealed  damage.  If  concealed  damage  is  found,  notify  the  ATS  supplier and  the 
Carrier  immediately.  Repack  with  the  original,  or  equivalent  packing  materials. 
Protect from physical  damage.  Do not  stack.  Store indoors  in  a  clean,  dry, well 










