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i got a new blower combination with a single drive and a twin rotor, one for the PEM, the other for the AC-motor. But with the rising heat with above 32° Celsius, the blower does not push enough air to move the color in performance mode from red to white.
smorgasbord
Active Member
From which end? Do I remove the PEM (which I probably don't want to do), or remove the fan and suck out from there?
W.Petefish
Active Member
Which is getting too hot - the motor or PEM? It cools the PEM quicker than the old fans so I'm surprised...
smorgasbord
Active Member
JRP3
Hyperactive Member
Or a bunch of leaves. I'm still amazed that Tesla didn't have a simple filter on the fans to prevent all of this.
smorgasbord
Active Member
According to Tesla, just a bunch of leaves and other roadside debris. Not the worst they're seen, either, by a long shot.
They said they've investigated filters, but the filters create drag that will lead to premature fan failure and/or reduce flow that impairs their cooling effect on the PEM.
Wouldn't a grate of some sort work? Things would still get through easily but it would stop the larger items from getting through. I'm hoping they upgrade my PEM fan at some point but as far as I know, it's still working well.
When Tesla installed my fan upgrade, they added a large shield - basically a box open only at the top - to try and prevent road salt etc. from getting to the fans. We'll see how it does with leaves...
Jaff
Active Member
I've ripped around a fair bit since I had my fan upgrade...can't get my motor or PEM temp out of the blue temp indicators.
Right.:cursing: I suppose those leaves and debris didn't impair cooling? There is already a filter of sorts. It's the grate on the intake to the PEM. It wouldn't take a rocket scientist to design a course filter that would not restrict air-flow. Certainly not any more than the PEM grate restricts flow.
JRP3
Hyperactive Member
Of course, that's rather poor logic from Tesla. You could even have the fan reversible to blow out debris if air flow becomes restricted, could be automatic on startup or shutdown.
smorgasbord
Active Member
FWIW, a web search on the blowers came up with these links:
Spec sheet: http://www.spalusa.com/pdf/30000556_SPEC.pdf
Buy Direct at: http://www.spalusa.com/store/main.aspx?p=itemdetail&item=30000556 for $109.43
IP33 rated which means "Protected from touch by hands greater than 2.5 millimeters" & "Protected from water spray less than 60 degrees from vertical" (see http://www.anaheimautomation.com/manuals/forms/NEMA,%20UL,%20and%20IP%20Rating%20Codes.pdf for explanations.
312 CFM at 0 static pressure
19 amps, 12 volts nominal
"low noise"
available single speed or 3-speed
Note that the blower does not produce high pressure. If I'm reading the spec sheet properly, at 3.6psi there is no airflow at all.
Spec sheet: http://www.spalusa.com/pdf/30000556_SPEC.pdf
Buy Direct at: http://www.spalusa.com/store/main.aspx?p=itemdetail&item=30000556 for $109.43
IP33 rated which means "Protected from touch by hands greater than 2.5 millimeters" & "Protected from water spray less than 60 degrees from vertical" (see http://www.anaheimautomation.com/manuals/forms/NEMA,%20UL,%20and%20IP%20Rating%20Codes.pdf for explanations.
312 CFM at 0 static pressure
19 amps, 12 volts nominal
"low noise"
available single speed or 3-speed
Note that the blower does not produce high pressure. If I'm reading the spec sheet properly, at 3.6psi there is no airflow at all.
frequencydip
Sig 100 - #52
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