AB Sciex API 5000 LC/MS/MS Hardware Manual - Page 12

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System Overview

To turn on the system

Certain conditions outside the direct control of the instrument firmware must be

satisfied before the turbo pumps will be initiated. The Curtain Gas™ supply must

be turned on at the source, and the roughing pump must be turned on manually.

CAUTION! Potential Instrument Damage: Shut off the sample flow before you

shut down the instrument.

3. In the Analyst software, deactivate the hardware profile and then close the

application software.

4. Stop the Analyst

Analyst software.)

CAUTION! Leave the roughing pumps running for a minimum of 15 minutes

after turning off the instrument's main power switch. When the main power

switch is turned off, the turbo pumps continue to rotate without power for a

few minutes and continue to provide vacuum to the vacuum chamber. If, during

this time, the roughing pumps are turned off, the pressure in the vacuum line

between the roughing pumps and the turbo pumps increases. The increase in

back pressure can create an incorrect load on the turbo pumps' bearings and

can cause a catastrophic failure of the turbo pumps.

CAUTION! If the instrument is to be shut down for any length of time, we

recommend that the vacuum chamber be vented to prevent exhaust from the

roughing pump being sucked back into the vacuum chamber. To vent the

vacuum chamber, follow steps 5 to 7.

CAUTION! If the vacuum chamber is not going to be vented while the

instrument is shut down, we recommend the roughing pump remain turned on

to prevent the pump exhaust from being sucked back into the vacuum chamber.

If you do not want to vent the vacuum chamber, skip steps 6 and 7.

5. Turn off the main power to the instrument. As you face the instrument

where the instrument name is visible and with the source to your left, the

switch is located on the bulkhead at the back right corner of the chassis.

6. After fifteen minutes, turn off the roughing pumps. The power switch is

located beside the power supply input attachment on the roughing

pump.

Note: The roughing pump has its own power toggle switch and must be turned

off manually. The roughing pump is not controlled remotely by the system

controller.

7. Let the vacuum chamber vent naturally through the orifice for ten minutes

to allow the instrument to reach atmospheric pressure.

8. Unplug the mains power cord to the instrument from the rear bulkhead

near the main power switch for the instrument.

Service. (See the Software Reference Guide for the

Document Number: D1000092206 B