51
Service Manual – SC500
04 - Control System
Vacuum Motor
Figure 36:
PIN
Color
Description
Measured
Comments
VA+
Red
Vacuum system power
24.8v (off)
24.4v (on)
Constant Positive
VA-
Blue
Vacuum system power supply -
24.56 (off)
1.36v (on High)
9.69v (on Quiet mode VRID parameter = 1)
1.02 Running, 9.56
Quiet Mode