Urschel COMITROL 2100, Instruction Manual

Page: 127 / 166

49
Resistors and sensor leads: Check
dielectric grease coating on resistors, sensor
leads and terminal strip. Dielectric grease
provides a moisture barrier to reduce the
potential for premature amplifier failure. If
resistors, sensor leads and terminal strip
need to be greased, use only dielectric tune-
up grease. Generously fill each hole on bot-
tom of lower terminal strip and each screw
terminal hole for the sensor leads, and coat
each resistor with the grease. Use a small
brush to smooth out grease and insure
grease completely covers terminal strip area
(Figure 37).
Safety switches: Terminals should be
tight and free from corrosion. Recommended
torque is 5 inch pounds or 0.56 newton-
meters. Check sensors, actuators and cords
for damage.
Switches should be replaced
if any defect or damage is detected. Check
switch alignment. Actuator must be
aligned and within 1/16" (1.6 mm) of
sensor to complete safety switch circuit
(Figure 38).
MAINTENANCE
Electrical Assembly
2
1
Figure 38 — Safety switch sensors and actuators
must be aligned and within 1/16" (1.6 mm).
(1) Sensor, (2) Actuator
Figure 37 — For moisture protection, generously
coat resistors, sensor leads, screw terminal holes
and terminal strip area with dielectric tune-up
grease.