SECTION 4
MAINTENANCE OF
HIGH-PERFORMANCE
EMITTER ASSEMBLY
4.1 SEC TION OVER VIEW
This sec tion de scribes the pro ce dures in volved in proper main te nance of the high-per for mance emit ter as -
sem bly. Sec tion 5.2 de scribes how to change the fil a ment, sec tion 5.3 de tails the dis as sem bly pro ce dure for
the en tire emit ter, and sec tion 5.4 cov ers emit ter re as sem bly.
Gen eral Pre cau tions
1
To min i mize con tam i na tion, al ways wear rub ber sur gi cal gloves or other par tic u late-free gloves when
han dling parts that will not be chem i cally cleaned be fore be ing in stalled in the vac uum cham ber.
2
Ex am ine all screws as you dis as sem ble the emit ter and re place any that show signs of thread dam age or dis -
tor tion. Dam aged screws are likely to be come frozen in place dur ing sub se quent source op er a tion, re sult ing
in break age or thread strip ping the next time you at tempt to re move them. Coat all screws that you do re use
with mo lyb de num disulfide (ROCOL or equiv a lent). When re plac ing screws, use only stain less steel 6-32
socket-head screws of the cor rect lengths (see Fig ure 4-3). All screws must be vented so as to cre ate a path
through which gases trapped be tween the threads can be pumped out. To min i mize vir tual leaks, it is im por -
tant that the un der side of the screw’s head as well as its threads be vented. For best re sults, use the screws
that are avail able from Temescal, as they come ma chine vented in the cor rect man ner.
STIH-270-2PT
0101-9004-0A
4-1
Содержание Temescal SuperSource2 STIH-270-2PT
Страница 54: ...Operation 3 18 0101 9004 0A STIH 270 2PT...
