tuesday perusing the oracula sibyllina

seanoconn

johngti said:

Day 6. The warder here is a sadist. She gets enjoyment from constantly swanning in and out. I’m sure she watches me in the dark through the glass door. There’s others here too, strange little people who seem to be constantly communicating with other people via the use of headsets. I’m nervous. I suspect I’m not going to be allowed out of here alive.

The slow descent into madness and paranoia. Can’t wait for the next instalment. 😃

tetley10

seanoconn said:

johngti said:

Day 6. The warder here is a sadist. She gets enjoyment from constantly swanning in and out. I’m sure she watches me in the dark through the glass door. There’s others here too, strange little people who seem to be constantly communicating with other people via the use of headsets. I’m nervous. I suspect I’m not going to be allowed out of here alive.

The slow descent into madness and paranoia. Can’t wait for the next instalment. 😃

I'd say he finished the bike fettling too early. Left himself too much time on the other side of completing it and is paying the price.

tlw1

tetley10 said:

seanoconn said:

johngti said:

Day 6. The warder here is a sadist. She gets enjoyment from constantly swanning in and out. I’m sure she watches me in the dark through the glass door. There’s others here too, strange little people who seem to be constantly communicating with other people via the use of headsets. I’m nervous. I suspect I’m not going to be allowed out of here alive.

The slow descent into madness and paranoia. Can’t wait for the next instalment. 😃

I'd say he finished the bike fettling too early. Left himself too much time on the other side of completing it and is paying the price.

Isn’t this the time for ale and Netflix, time will fly by

seanoconn

tetley10 said:

Gti, can you not use your vast mathematical knowledge to formulate an escape plan which you can put into action at the earliest opportunity.

sungod

pinno said:

oxoman said:

Pinno sorry not got back before been busy sorting the OH. The fact it goes up kind of says your 24v power supply is OK. It definitely needs more than 8 volts to activate the solenoid. Could be a dodgy connection / some machines have separate fuses for each valve so could be that or a defective solenoid coil that's dragging the voltage down to 8v. Either way good luck.

Solenoid valve was drawing too much current and not working - even with a tap from a hammer.
We disconnected it and the current shot up across the switch to a healthy 22.5v.

22.5v is volts not current

did you actually measure the current?

if not, the problem might be the solenoid, or...

for instance, if there's a high resistance between the power and the solenoid, you'll get a voltage drop across the resistance proportional to the current, hence 8v

removing the solenoid drops the current to zero, so there's no voltage drop, hence 22.5 v

pinno

sungod said:

pinno said:

oxoman said:

Pinno sorry not got back before been busy sorting the OH. The fact it goes up kind of says your 24v power supply is OK. It definitely needs more than 8 volts to activate the solenoid. Could be a dodgy connection / some machines have separate fuses for each valve so could be that or a defective solenoid coil that's dragging the voltage down to 8v. Either way good luck.

Solenoid valve was drawing too much current and not working - even with a tap from a hammer.
We disconnected it and the current shot up across the switch to a healthy 22.5v.

22.5v is volts not current

did you actually measure the current?

if not, the problem might be the solenoid, or...

for instance, if there's a high resistance between the power and the solenoid, you'll get a voltage drop across the resistance proportional to the current, hence 8v

removing the solenoid drops the current to zero, so there's no voltage drop, hence 22.5 v

Checked Voltage to the Valve Solenoid - good.
No click on the valve Solenoid which was audible when working.
Applied AC current to the Solenoid directly @ 24v, 1 amp. Nothing.

Simples.
[My terminology - morning fuzz.]

Checked voltage at the terminal block to the Safety solenoid after bridging the Valve solenoid (connector) to see if there was undue impedence somewhere from the transformer to the Safety Solenoid - wiring goes under the base into a terminal block and then through a coiled cable which extends with the rising ramp and there's lots of moving parts. This caused a wire break when the rod that retains the coiled cable broke an E clip and became unknowingly dislodged, then pinched. It's behind a panel. Repaired break. Thought that would solve the problem.
Volts and amps identical to output from switch on the control panel after repair.
Applied same 24v, 1 amp to the safety solenoid in A direction (up) and it clicks. Apply same to B direction (release - down), nothing.

Odd that seemingly, the break caused the Safety solenoid to stop working. The broken wire was not in contact with anything except earth theoretically (which would have been the guide rod). And yes, checked impedence through all 4 internal wires in the coiled cable to also check involuntary* continuity. (*for want of a better word).
Gemco said they sold a lot of these Solenoids. Apparently they are fickle but they have a very fine wire/spring between the solenoid, the pawl and counterbalances. This means the set up when the new solenoid arrives is going to be a faff.

Also odd that both the Valve and safety solenoid gave up the ghost simultaneously when the fuse (for the post transformer circuit) is only 3 amp and did not blow.