Graseby 3000/500, Manual

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G r a s e b y M e d i c a l L t d .
7 — 2 2
I s s u e A ( A p r i l 2 0 0 2 )
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
7
Symptom Possible cause/solution
Loading problem, check Cassette loaded in backwards (flat side in) - reload cassette,
tubing set repair faulty connection to pressure plate micro switch, faulty
U414, U409 on Display board, (motor is stalling in reverse -
repair motor wire connection at P103 on I/O board, replace
I/O board, replace Display board, replace motor).
Display the Pressure Calibrate screen in Biomedical menu. Check
that with the pump running and a set loaded, the motor position
value increments from 0 - 1919 and that the pressure value is
between approximately 23 and 37 for a closed loop cycle. If the
motor position displays ‘unref’ then replace the faulty opto encoder
on i/o board. If the pressure value is out of spec, adjust occlusion
alarm setting or replace faulty pressure transducer.
No flow, above pump. Repair faulty P102 connection on I/O board, repair open empty
bag contact wire - repair wire, contact out of position - reposition
contact in guide slot, faulty U104, U105 on I/O board,
contaminant on top piston shaft - clean top piston shaft.
Back up/continuous audio failure. Replace open fuse (F101) on I/O board, loose fuse (F101) -
tighten fuse holder contact.
Occlusion, below pump. Faulty pressure sensor - replace pressure plate, repair faulty
wire connection to pressure sensor, repair faulty connection
to J404 on Display board, faulty U409 on Display board.
Close clamp, load safety clip. Replace faulty flex wedge micro switch (see Fig. 7.7), repair
faulty wire connection to flex wedge micro switch, repair faulty
connection at P102 on I/O board, faulty U104 on I/O board.
Door open. Replace faulty cam housing micro switch, repair faulty wire
connection to cam housing micro switch, repair faulty
connection at P102 on I/O board, faulty U104 on I/O board.
Primary audio failure Replace CPU/Power supply board. Faulty U16, Q12, Q13 on
( Back Up audio sounds, CPU/Power supply board.
system error is displayed).
Primary audio failure
Replace CPU/Power supply board. Faulty U5, U10, U11 on
(primary audio sounds, CPU/Power supply board.
system error is displayed).