DynaGen AST2225 Manuale d'installazione e d'uso - Pagina 10

Sfoglia online o scarica il pdf Manuale d'installazione e d'uso per Interruttore DynaGen AST2225. DynaGen AST2225 19. Automatic transfer switch

Replacement is the reverse of the above procedure. Note that the crank arm must be

positioned flush with the end of the motor shaft and the set screw opposite the flat on the

shaft

3:4 MECHANICAL LIMIT SWITCH ADJUSTMENT

The limit switches controlling the normal and emergency positions of the main

switches, have been factory set to a clearance of 0.020" between the face of the

switch and the limit switch cam, to ensure continued reliable operation. Should it

become necessary to adjust this gap, in the event of replacing a limit switch for

example, the following procedure is recommended (see diagram page 12):

a) Electrically isolate the transfer switch from all power sources. Loosen the

pivot screw and clamp screw to enable the limit switch to rotate about the

pivot screw.

b) Open the cover on the operating arm and remove the pin slider to allow the

limit switch cam to be rotated manually.

c) Insert a 0.020" feeler gauge between the face of the limit switch cam and

the operating plunger of the switch. Rotate the limit switch about the pivot

screw to establish the 0.020" clearance. Tighten the clamp screw and pivot

screw.

d) Rotate the limit switch cam by hand to check the switch operation and

readjust if necessary

e) Replace the pin slider and close the cover.

Manual for AST2225 Series

Automatic

Transfer Switch