Dräger Medical Fabius Tiro Technical & Service Manual page 173

Replacement Procedure
Motor/Ballscrew Assembly
Ventilator Reassembly
Dräger Medical AG & Co. KGaA
RETURN TO THIS MANUAL'S TABLE OF CONTENTS
RETURN TO CD-ROM TABLE OF CONTENTS
NOTE
Upper and lower cylinders must be separated, and piston must be
removed.
33. At the bottom of the lower cylinder, remove the ground plate, and remove
the center cap.
34. Disconnect and remove the tach cable and positioning sensor cables.
Note the arrangement of the cables so they can be reinstalled in the
same manner. (The motor cable remains with the motor/ballscrew assem-
bly.)
35. Remove the four screws securing the motor/ballscrew assembly to the
lower cylinder. Note the orientation of the unit so the replacement assem-
bly can be installed in the same manner.
36. Remove existing standoffs and shocks from removed motor/ballscrew
assembly then reinstall onto the replacement motor/ballscrew assembly.
37. Install the replacement motor/ballscrew assembly with the hardware that
was previously removed.
38. Reinstall the tach and sensor cables. Route all cables in the original man-
ner.
39. Reinstall the ground plate and the center cap.
40. Reinstall the piston.
NOTE
The lip on the lower diaphragm is captured between the upper and lower
cylinders, and must be correctly installed.
41. Place the upper cylinder on the lip of the diaphragm, and carefully fit the
lip into the groove in the upper cylinder.
42. Carefully press the upper cylinder down until it is resting on the lower cyl-
inder. Note that the cylinders are keyed to fit together in only one position.
Look down through the upper cylinder and verify that the lower diaphragm
shows a uniform roll around its circumference.
43. While holding the cylinders together, move the band clamp into position
and reinstall its bolt to join the cylinders. Make sure the band clamp is
positioned as shown in the illustration, or the ventilator door may not
close properly.
44. Position the ventilator against the door; slide the upper and lower hinge
bushings in place, and reinstall Screw A
tor to the door.
45. Locate the hinge rod that was previously removed. Orient it with the E-
ring groove toward its upper end. Hold the ventilator assembly by its top
handle and position its lower hinge in the monitor housing (make sure the
spacers are in place). Sight down through the hinge bushings to align the
lower hinge bushing with the hole in the monitor housing. Slide the hinge
6020.002
Fabius Tiro
(Figure 10) to attach the ventila-
Revision B Released
167