Hardware manual

Maintenance 4
Agilent 7500 Series ICP-MS Hardware Manual 4-151
1 Put the Agilent 7500 into Shutdown mode.
Refer to Chapter 3, “Startup, Shutdown and Status” for details.
2 Switch off the two breakers labeled “ROTARY PUMP” on the rear of the
instrument. (Switch the breaker down to the ‘O’ side.)
3 Remove the four screws securing the upper body to the lower body and
remove the upper body.
4 Remove the filter elements.
Discard the used filters according to correct laboratory procedures.
5 Wipe the oil from the inside of the block using a paper towel.
Do not remove the ‘D’ seal from the mating surface of the lower body. Check
the O- ring located in the filter attachment area of the lower body for
deterioration and cracks.
6 Install new filter elements.
Confirm that the O- ring is correctly positioned. After inserting the new
elements, check the foam seal rings on the top and bottom of the filters.
7 Replace the top cover and tighten the 4 screws.
8 Start the Agilent 7500 and rotary pump.
See “Startup, Shutdown and Status”.
Testing the Rotary Pump
After restarting the pump, check that there are no loose hosing connections
and that the oil cap is tightly closed if there are any oil spills or leaks.