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Step 3: Reset the roughing pump error (if required) by pressing the reset button. If the error does not clear immediately then press reset a few more times over the span of 1-2 minutes.
Step 4: If the pump is not responsive, or if resetting did not clear the error, then try power cycling the pump . The breaker panel is shown below.
- See "Controller locations" to find the circuit breaker for the roughing pumps, appropriate PPE, and the correct set of breakers
- Go out to S20 and turn off the breaker for at least 30 seconds
- Turn the breaker back on
- Check if the error is cleared and the pump will restart.
may clear the error. Power cycling the pump requires the cycling of the breaker that powers that specific pump. See the instructions below regarding this procedure.
Step 5: If the error will still not clear, then try powering off the breaker for 30 minutes, then power back on and retry the pump. If this does not work, then leave the power off and inform Doug.
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Power cycling roughing pumps using a breaker
Note - This procedure will be updated to include the required WPC processes required to undertake this procedure.
The roughing pumps and turbopumps are powered through the breaker panel The breaker panel for the DPS roughing pumps (and turbopumps) is:
Panel 2PK102E2 on south wall of S20 gallery
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Circuits are tied together in sets of 3:
- 13,15,17 = 3151:US2 roughing pump
- 19,21,23 = 3171:US1 roughing pump
- 31,33,35 = 3259:DS1 roughing pump
- 30,32,34 = 3291:DS2 roughing pump
The arc-flash hazard category has been updated to category 3 on 7/20/2023.
If a roughing pump will not reset an error message, turn power off on breaker
panel for 30 seconds, then power back on. More status info is available on the hand held
controllers in the FKG racks. power cycling the pump may clear the error. This work must be performed by authorized worker.
- Acquire authorizations and proper PPE for category 3 breaker
- Go to breaker panel 2PK102E2
- Open the breaker for the faulted pump
- Wait 10 minutes
- Close the breaker
- Wait for the pump to restart and check if the error has cleared (pump → More...)
- Click Run, and wait for the pump to reach full speed.
Pump redundancy
The forelines are reconfigurable to overcome the failure of a pump, in most cases. But this should only be attempted by an expert that knows what they are doing because doing this in the wrong order can lead to problems.
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