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00:15 Aug 8, 2010
This question was closed without grading. Reason: Answer found elsewhere
English to French translations [PRO] Tech/Engineering - Mechanics / Mech Engineering
English term or phrase:Blower Prover Switch (BPS)
The BPS on this model is a normally open switch that closes on increased vacuum. Once the blower moves enough air to create a vacuum across the Venturi the BPS is activated. If the blower fails or cannot move sufficient air a soft lockout will occur. Inspect the blower for correct operation.
Explanation: dans un ensemble brûleur-soufflante, ce contacteur de pression vérifie que l'air est effectivement soufflé vers le brûleur avant d'injecter le gaz.
"3. The control system then performs selected diagnostic system checks. This includes confirming the low gas pressure, blocked exhaust, blocked intake and ECO (energy cut
out) switch contacts are closed. The Blower Prover Switch contacts are confirmed open.
4. If all diagnostic checks are successfully passed, the control system energizes the Combustion Blower for pre-purge.
5. The control system must confirm the Blower Prover Switch contacts close after the Combustion Blower is energized.
6. If the Blower Prover Switch contacts are confirmed closed
" Blower Prover switch. Normally open contacts that close on a rise in pressure. This switch is used to insure the Combustion Blower is operating properly. The control system monitors this switch and will disable heating operation if its contacts are closed before the Combustion Blower is energized or open any time during a heating cycle. " http://www.americanwaterheater.com/support/manuals/HCGseries...
"Air pressure switches are used on all “fan assisted” gas fired water heaters in our product line. Air pressure switches are used to verify that operational conditions are being met; IE: the blower is running or the vent/combustion air piping length is not excessive or obstructed. " http://www.hotwater.com/bulletin/TB-A023-06.pdf
FX Fraipont Belgium Local time: 16:12 Works in field Native speaker of: French PRO pts in category: 2967