Removing And Replacing Chambers; Chamber Removal - Ametek ORTEC Alpha Duo Hardware User's Manual

ALPHA DUO, ALPHA MEGA, & ALPHA ENSEMBLE USER'S GUIDE
2) Pour deionized water into a clean beaker.
3) Dip a cotton swab into the water and then carefully blot on a clean tissue to remove the excess.
4) swab the aluminum surface of the detector.
GENTLY
wiping the detector's aluminum surface with the damp swab a few times should pick up most of
the removable contamination. If cotton-covered sticks are used, loosen the cotton around the
stick and be careful not to allow the end of the stick to contact the aluminum surface.
5) Clean the housing of the detector and the protective cover in the same way.
6) Blow dry with clean nitrogen gas.
7) Return the Alpha unit to service by reversing the instructions in Step 1.
4.2

REMOVING AND REPLACING CHAMBERS

These instructions apply to the removal of a vacuum chamber assembly from an Alpha module for the
purpose of cleaning or replacing the chamber. The remaining Ensemble chambers can continue in use.
4.2.1

Chamber Removal

1) Turn off bias to the detector, vent the Alpha chamber(s), power off its enclosure, and disconnect
the enclosure from AC mains power.
2) Slide the Alpha module out of its enclosure as shown in Figure 14 and Figure 15 of Appendix
B.
3) Place the white protective cap on the detector and remove the detector.
detector front surface.
4) Use a 3/32 in. hex-head wrench to unscrew the three socket head cap screws holding the
chamber in place. Remove the two top screws first and the bottom screw last.
5) Pull the chamber out slightly (about 1 in.). Put the screws back in the holes and close the
chamber door to trap the screws in place. This prevents losing them and keeps them handy for
chamber reinstallation.
6) Pull the chamber out a little more until the glass feed-through on the top of the chamber is
exposed. This is shown for an Alpha Duo chamber in Figure 12.
CAUTION If the cable is caught on the top of the panel, the feed-through pin may be damaged by
pulling hard on the chamber.
20
DO NOT "scrub" the detector.
Do not touch the
932505_0G / 102022
Gently