QAL Medical 480, Service And Technical Manual

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11
6 BALLSCREW (480/480E/480E PRO)
Removal:
1. Remove bottom cover (refer to section 2.1).
2. Disconnect the motor and remove from the Bearing Bracket and Frame (refer to section 5).
3. Loosen the ballscrew nut.
4. Slide the U-bracket assembly to full extension.
5. Slide the motor mount end of the ballscrew into the corner of the frame and twist it into a vertical position
while lifting the end of the ballscrew.
Installation:
1. Check to make sure that the plastic bearing for the ballscrew is located in its proper position. Then
carefully place the ballscrew free end into the plastic bearing. Reverse step 5 above to replace the
ballscrew.
2. Slide the motor mount end down into place. The four holes in the assembly should align with the
frame holes.
3. Place the rubber mounts into the frame holes and through the motor mount, making sure that the washers
are on the threaded side of the mounts.
4. Secure the ballscrew in place by screwing the rubber mount nuts on the inside of the motor mount on the
end of each rubber mount and tightening.
5. Tighten the ballscrew nut (use Loctite #242).
6. Re-install the motor assembly.
7. Reinstall the bottom cover (refer to section 2.1).
7 POWER SUPPLY (480 ONLY)
Removal:
1. Remove bottom cover (refer to section 2.1).
2. Disconnect power supply cable connection from the power switch and the ground wire from the frame.
3. Carefully pull the power supply wires from the unit.
Installation:
1. Insert the power supply cable through the base frame.
2. Install the strain relief.
3. Re-connect and/or solder wires according to color codes.
4. Install tie-wraps as needed.
5. Reinstall bottom cover (refer to section 2.1).
8 MOTION CONTROLLER PENDANT (480/480E)
8.1 Controller Cable
attention:
The Motion Controller is a Static Sensitive Device. Repair should be attempted by qualified personnel
only. All anti-static handling procedures should be observed.
nOTE:
Transfer the ferrite loops to the new cable and install them in the same location. Ensure the cable and
ferrite loops will not come in contact with any moving parts.
Removal (Steps 1 through 4 for 480 only):
1. Remove bottom cover (refer to section 2.1).
2. Cut ty-raps from the entire length of the controller cable, being careful not to damage the ribbon cable.
3. Pull the cable connector off the board-mounted connector.
4. Remove the strain relief and pull the cord through the base frame.