Haemonetics ACP 215, Service Manual, Page: 143 / 186

Disassembly 143
Haemonetics
®
ACP-215
®
Service Manual P/N: SM-ACP215-01-EN(AB)
Cover Switch
To remove the cover switch:
1. Remove the centrifuge from the cabinet.
2. Remove the two (2) screws that secure the cover-switch assembly to the
centrifuge well.
3. Pull the cover-switch assembly away from the centrifuge well.
Cover Switch Reassembly
The cover switch assembly mounting position is a calibration step. To
reassemble the cover switch:
1. Set the switch engagement of the cover switch assembly to the bottom of
the shaft, so that there is a 3/8 to 5/8 clockwise turn of the centrifuge
knob after both switches have been disengaged.
2. Check the switches with an ohm meter.
3. Verify that both switches respond to the cover latch, and that the
switches are closed when the cover latch is engaged.
Cover Knob
Replacement
To remove the cover knob:
1. Remove the centrifuge from the cabinet.
2. Remove the knob disk. This can be accomplished by placing a thin flat
screwdriver in the gap between the knob disk and the knob and tapping
on the back of the handle of the screwdriver until the cap detaches from
the knob.
Note: The knob disk is sealed to the knob using Loctite ® . It may be somewhat
difficult to detach and may require more force to separate it from the knob. Do
not worry about damaging these components as they are going to be replaced.
3. Remove the cover switch assembly from the centrifuge. (See “Cover
Switch” on page 143 .)
4. Remove the knob by unscrewing the retaining screw and unscrewing the
knob from the centrifuge lock shaft.
5. Twist the centrifuge shaft spacer counter clockwise using vice grips or
locking pliers. As the centrifuge shaft spacer is removed, the centrifuge
lock shaft will drop out from the bottom of the centrifuge cap assembly.
Save the spring for reuse with replacement parts.
6. Place the compression spring on the replacement lock shaft and insert
into the centrifuge cap assembly.
7. Prime and apply Loctite to the lock shaft threads at the base only, and
then screw the centrifuge shaft spacer (threads up) on the lock shaft until
the spacer bottoms out. Be sure that no Loctite has spread to the threads
above the centrifuge shaft spacer and that no Loctite is touching the
centrifuge cap assembly where the shaft and the spacer come into
contact with the centrifuge cap assembly.