Shaft Lock (Option); Figure 3-7. Shaft Lock - Ametek SPS A Series Operation Manual

Operation

3.2.2 SHAFT LOCK (OPTION)

This option replaces the standard control knobs with a two-piece shaft
lock. These are installed over the voltage and current adjustment
potentiometer shafts to prevent rotating under conditions of shock,
vibration, or accidental contact. For adjustment, the following steps
apply:
•
Loosen the shaft by rotating the outer locking nut counter-
clockwise with a 7/16-inch wrench.
•
Adjust the shaft with a flat screwdriver to the desired output level.
•
Tighten the outer locking nut, rotating clockwise, to approximately
5 LB-in (0.56 N-m).
NOTE: Take care not to over-torque the outer nut. Should the cone nut
become loose or jammed with the outer locking nut, re-torque the cone
nut with a 1/2-inch wrench to approximately 15 LB-in (1.69 N-m).
CAUTION!
Never fully loosen the cone nut, or remove the shaft lock from the chassis.
3-8

Figure 3-7. Shaft Lock

AMREL SPS-A Series
M550129-01 Rev A