User manual

Page 13 of 51 Vetta Head Assembly Instructions Rev D1
#6-32 SHCS (3)
P/N 30-00-2632
#6 Split Washer (3)
P/N 30-03-0600
#6 Flat washer (3)
P/N 30-03-0606.
Torque to 10-12 in-lbs.
Lead preparation
required for interface
to PCB.
Thermal Pads (4) P/N 30-63-4005
#4-40 SHCS (5) P/N 30-00-0440
Split Washer (5) P/N 30-03-0400
Flat washer (5) P/N 30-03-0425
(NO WASHER SUBSTITUTIONS)
Shoulder Bushing (4) P/N 30-15-0404
Torque to 6-8 in-lbs.
b) Assemble Power Components to Heat Sink (See Figure 2):
a) Clean the Heat Sink installation area by wiping with a clean, lint-free cloth.
b) Install components onto Heat Sinks as shown. Properly locate (4) TO-220 diodes and (1) thermistor device.
Properly locate (2) TO-247 devices and (1) bridge rectifier.
c) These devices shall be parallel to two edges of the Heat Sink as shown.
d) The four Thermal Pads should lie flat between the Heat Sink and the TO-220 diodes and TO-247 devices.
e) With a DMM, check for NULL continuity (
no shorting
) between the Heat Sink and the tabs of the four TO-
220 diodes.
Thermal pad (2)
Part# 30-63-4002
Note orientation of groove on
Heat sink
(
30-51-6002
)
TO-220 diodes
Thermistor
Note orientation of groove on
Heat sink
(
30-51-6001
)