Graseby 3000/500, Manual

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8 — 1 3
G r a s e b y M e d i c a l L t d .
3 0 0 0 / 3 1 0 0 a n d 5 0 0 / 5 0 5 S e r v i c e M a n u a l
V o l u m e t r i c I n f u s i o n P u m p s
8
I s s u e A ( A p r i l 2 0 0 2 )
Cassette housing disassembly
Prior to disassembling the Cassette housing; the front housing, I/O
board and pump mechanism must be removed.
Remove the retaining ring from one end of each cassette shaft. Slide
the shaft out of the cassette housing. Remove the optical emitter and
detector assemblies from the cassette housing and then remove the
cassette housing. Reverse the above procedure to assemble the
Cassette housing.
Safety clip mechanism disassembly
The Front housing, pump mechanism, I/O board and cassette housing
must be removed in order to disassemble the Safety clip mechanism.
The Safety clip/flex wedge switch is attached to the cam housing (see
Fig. 8.6 below). Remove the springs from the cassette housing guides.
Disconnect the two wires from the microswitch, then remove the two
mounting screws from the cam housing.
Reassembly
Loctite varnistop 7400 must be applied to the surface of the clip
switch bracket that mates with the cam housing to assure the
strength of the assembly. Before tightening the bracket screws, place
the fixture (part no. 78-8069-6343-1) over the cassette housing guide
pins and flex wedge to assure alignment, then tighten the screws.
Figure 8.6 Cassette Housing and Safety Clip mechanism disassembly
Cassette
Housing
Cassette Shaft
Detector
Assembly
Nylon Washer (4)
Emitter
Assembly
Flex
Wedge
Apply Locktite 7400 to
this surface
Remove
Remove
Cam
Housing
Guide
Pin
Remove
Springs (4)