Hi

I am new to this forum, I have one IVAC 591 infusion pump which shows SET OUT error. I checked everyboard and suspect the optical board.Anyone have the Service manual , please send to my email medico_systems@hotmail.com Please help
Regards

aidan

Welcome to the forum, Aidan.

Only the users manual is immediately to hand, I'm afraid.

As you may already know, the "SEt Out" message means that the giving set has been removed, or incorrectly fitted.

But (if I remember correctly), it could also arise due to the battery being totally zapped. And, if so, that's where I would look first!

See also these earlier threads. Meanwhile, what do the Self Tests reveal?

Hi geoff

I checked the battery and it is fine, the test 14 and 15 failed . what is the problem?

H'mmm. Can't remember. But 14 could be the buttons test. And 15 may fail because 14 has (if you see what I mean). Are all the buttons (keys) working?

I'll need to dig out a manual. We may have one hidden away in the workshop. I'll take a look tomorrow.

We may even have a 591 pump lurking around the place somewhere, as well!

Hi Geoff

Thanks for the reply.All the keys are working fine

Mornin' Aidan

OK ... back at the workshop now. Yes, test 14 is indeed the switch test (but that may have been a red herring, I reckon).

Meanwhile, test 23 will give you the error codes stack (scroll through with the single down arrow key).

And ... test 24 is the set sensor test. You will need a giving set (or cotton bud, thin pencil etc. - technically, a "reflecting surface") for this.

According to the manual, persistent "SEt Out" (or P6) errors may be due to:-

1) Set sensor wiring harness open or shorted (check for broken, loose, or disconnected cable assembly).

2) Weak or open set sensor assembly (replace set sensor in front housing).

3) LED set drive signal missing (replace Q2 on logic board).

So, it's all pointing to the set sensor (but check the wiring and connections - J6). This is an infrared detector mounted in the front housing (looking a bit like a screw head, near the top of the giving set path). Its output is monitored at the CPU via input channel 0 (pin 26) of the A/D converter (U11 on the logic board). If the voltage level is below 1.7 volts this is declared as the set not being loaded. A voltage level of 1.7 volts or above is seen as the set being loaded.

There are four wires going (from J6) to that sensor. Blue, Green, Yellow and Orange. I'm not sure which is which, but +5 volts is fed in on pin 4. And pin 3 should be system ground. The LED is across 3 and 2 (cathode at 3, of course). It is driven from Q2 on the logic board. The detector transistor is across 1 and 4. But all that is encapsulated, of course. Have fun!

By the way, I've found a 591 here. Like greeting and old friend, in all its (his) two-tone blue finery!

Thanks Geoff,

I checked the voltage at pin 26 and it is only 0.86 volts. also when i performed test 24, it shows set out. I checked the infrared led and sensor and suspect it shows open ( for led ) in both directions while testing by multimeter probes ( changes probes polarity ) . Is this means the sensor assembly faulty. Also I checked the voltage generated at the sensor and found it 0.15 and when I placed my finger in the front of the sensor, then the voltage raised to 0.85 volts.

Is in anywhere ( RS or Farnell )I will get this sensor assembly? Also if possible please send me the service manual

regards

aidan

I suspect that you may be being misled by your multimeter tests on the LED. In fact, perhaps (from what you are saying) the sensor assembly is actually working! I'm assuming that it isn't showing any signs of physical damage.

Is it getting the juice it needs (and, no doubt, deserves) from Q2? The fault could be on the Logic Board (you don't have one, I suppose?).

If you decide that the sensor is indeed faulty, but can't find a replacement (and the user agrees that set detection may be abandoned), no doubt you could arrange for pin 26 to be set in some other way or other. You might like to try that anyway as part of your fault finding fun!

To be honest, the manual is not entirely clear (to me, at any rate) where the 1.7 volts should actually appear (and unfortunately I don't have time right now to delve into an actual 591 - later, perhaps). But I'm guessing at the top of R33 on the logic board.