Rockford Fosgate DETECT-A-FINGER RKC-502 Installation Manual page 18

SECTION 3—OPERATING PROCEDURES & TROUBLESHOOTING
Detect-A-Finger Drop Probe Device-Welder
®
Troubleshooting
Resistant Measurement Troubleshooting
TERMINAL
From To
a b
b a
a c
c a
d b
b d
d c
c d
Power off with components not connected.
Bridge Rectifier, Terminal Identification
Readings may vary slightly from meter to meter. However, the
trend established between infinity (∞ ) and the lower readings
must remain consistent throughout the test. Any unusual reading
means the bridge rectifier is defective and must be replaced.
Transformer: Primary - 20 Ohms approx.
Secondary - 2 Ohms approx.
Rotary Solenoid - Resistance 7.72 Ohms.
AC solenoid air valves of the type usually supplied by Rockford
Systems, LLC have approximately
100 Ohms DC resistance.
18
RESISTANCE
OHMS
700
∞
700
∞
∞
700
∞
700
(a)
(b)
(c)
(d)
(-DC)
AC
AC
(+DC)
Rockford Systems, LLC
Call 1-800-922-7533