Precision Medical HeliO2 Blenders - Manual (Page 18)

Heliox / Oxygen Blender Service Manual
Page 16
II. HIGH FLOW (PM5500 Model)
Step 1: DISASSEMBLY
Tools Required
#2 Phillips Screwdriver 11/32 in. Nut Driver
#3 Phillips Screwdriver 5/32 in. Long Hex Key
1/2 in. Open End Wrench Small Retaining Ring Pliers
Figure A
1. Rotate dial [1] to the 60 graduation.
2. Remove the two flat head screws [2] on each side of the
top cover [3].
3. Remove top cover by pulling upwards.
The cover will not come off unless the dial is at the 60
graduation
Figure B
4. Use a ½ in. open end wrench to unscrew and remove the
Heliox [4] and Oxygen [5] inlet assemblies and primary [9]
from bottom of the Blender.
Oxygen inlet has left hand threads.
5. If manifold outlet assembly is present, unscrew the stem
using a 5/32 hex key and holding the manifold outlet
assembly to the bottom of the Blender.
6. Remove the four flat head screws [2] from bottom cover
[6].
7. Remove bottom cover.