Beckman Couler ALLEGRA X-12/R, Service Manual, Page: 37 / 83

Section 3: Service Procedures
Warning: Unplug the centrifuge or turn off and lock out the main wall circuit
breaker before removing an instrument panel.
Warning: As long as the yellow LED on the Motor driver board is lit, the Bus
Voltage is still present. Wait until LED is off.
3.1.4 Door Latch 392330, 392329 Replacement X-12/R
**Materials needed: Cord, Dacron (978139), Adhesive, Loctite 416 (6000808).
A. Open front panel as described in 3.1.1.
B. Remove harness from latch assembly.
C. Remove the emergency release string from the latch by cutting the cord knot located
in the plug in the base of the instrument.
D. Remove three nuts that hold the latch assembly in place.
E. Remove latch
F. Tie cord onto latch pivot bracket and secure it with Loctite.
G. Replace latch, refer to BCI drawing number 392300 for adjustment of the latch.
H. Tie both latch cords together so that both cords are the same length.
I. Reinstall the latch cords in the plug in the base of the instrument.
J. Make sure that the emergency release is functioning.
Warning: Unplug the centrifuge or turn off and lock out the main wall circuit
breaker before removing an instrument panel.
Warning: As long as the yellow LED on the Motor driver board is lit, the Bus
Voltage is still present. Wait until LED is off.
3.1.5 Door Latch 392900 Replacement X-15R
**Materials needed: Tether (392998), Door release, Adhesive, Loctite 416 (6000808).
K. Open front panel as described in 3.1.1.
L. Remove harness from latch assembly.
M. Remove the emergency release string from the latch by cutting the cord knot located
in the plug in the base of the instrument.
N. Remove two nuts that hold the latch assembly in place.
O. Remove latch
P. Tie cord onto latch pivot bracket and secure it with Loctite.
Q. When installing the new latch it needs to be moved all the way to the left before
closing the door and adjusting the gap of .09 between latch and striker(BCI drawing
number 392930).
R. Tie both latch cords together so that both cords are the same length.
S. Reinstall the latch cords in the plug in the base of the instrument.
T. Make sure that the emergency release is functioning.
3-4 Allegra X-12/R, X-15R Service Manual 07/07