PS Magazine - JANUARY 1983
PS, The Preventative Maintenance Monthly
ISSUE 362
JANUARY 1983
1±
YES!
DId You USE
7 ±s-/²6 TO L³K
\
´P tHe iNµ¶R·M¸n¹
±'
Yº»'r¼ p½¾G¿Àg<
\"²
'
-
.
Think things out before you purge.
or screws. You'll need to replace tHem
Look up tHe particular instrument
after cHarging.
you±re purging in ²M
750-116
or in
If the entrance valve has a screw
tHe instru³ent ²M. It´µµ teµµ you what
instead of a cap, you'll Need oNe of tHe
adapter to use (if any) aNd sHow wHere
t¶e entraNce and exHaust ports are.
Entrance ports are usualµy circled iN
gray paint aNd ex¶aust ports in yellow
paint.
²ake off tHe caps (or unscrew tHe
screws) of botH ports before you start.
If you don·t open tHe exHaus¸ port you
E
;±
j
Adapters
l
cOuld
builD up pressure aNd blow
adapters in the purgiNg kit. You´ll
tHiNgs apart iNside tHe iNstrument.
need
eit¶er
8±32UNC2A,
10-
Be
careful not to µose tHe port caps
24Unc-2A
or
10²32UNc-2
j
.
P1igIng
,
±
²
³
±
"Jl´U
Get the purging formula (pressure
alWa¹s
5
aNd time) For your instru³eºt from
pressure gage.
²M
³50-116´
»peN tHe reguµator valve
¼HeN tHe iNstrumeNt Has purged
until
t¶e
proper
pressure-Nearly
for the required time, s¶u½ off tHe
1Á
reguµator
valve.
²Hen
replace
tHe
exHaust port cap or screw.
If tHe exHaust port is Not equipped
witH gaskets or seals, l¾gHtµy Coa½ ½¶e
port screw witH seaµiNg co¿pouNd,
nSN 8030±00-2³5-8110,
and reiNstall
tHe screw.
Repµace
any
m¾ssiNg
gaske½s
Ào
preveNt nitrogeN leakage. »rder New
screw and gasKet sets froÁ ²able
2-3
on Pages
21-22
of ²M
75µ¶116·
·
I
my CÂÃÄIÅ
Ch
•
cÆÇ hAÈ
AJg±Ng
²
'
eXPiR³D´
a
.,ÉÊËÌÍÎ
ÏÐÑÒÓ
±'
±._"
J
l
Ô ÕÖ
I
×VØ
-
•ÙÚÛÜÝÞ
ß
à
áâã
äåaæçèéê
" '
µ¶
·•
:,
¸.l¹
²
²
³
´
AÂter purgiNg, ÃÄu NÅeÆ ½Ä Çu¾lÆ uÈ ½He Èressure ¾Ns¾de your ¾Ns½ru¿eNt
º
So ¾t w¾ll resist ½He ¾Évas¾oÉ Äf Æus½, ¿is½, wʽer, e½CË, frÄ¿ ½Ìe ou½side.
You do tHis by c¶argiNg it ÍitÎ
NitrogeNÏ
Ðet
tHe
rÑgUlatOr
Valve
tO
t¶e
preÒcÓibed c¶arÔiNg pÕessUre-neÖrly
always
¸
PÐI-aNd cHÖrge fOr tHe
reqUired ti×e, Ͷic¶ may be Only
20
seconds. ØÙ¶ecÚ ²M
7
5
0-¸¹6
fOr t¶e
exact time.Û ÜOnÝt OVerc¶aÞge. ²¶en
replace tHe port cap or sßÕeÍ.
FInIsHIng Up
•
Shut off the nitrogen. Com-
PlETely
close thE valvE on the cyl±
indEr. OpEn thE valve on the low-
prEssUrE sIde of the reGulator just
a
liTtLe T
o blEed off The prEssure.
à Ãou doNát ÇleeÆ o ½He Èressure,
½He ruÇÇer ƾaÈÌragm ¾N ½He regula½Är
w¾ââ Çe uNÆer CoNs½aN½ S½raiN. ã̾s
CÄulÆ Causä a Èer¿aÉeN½ leaå aNÆ
ÃÄuæll Need a New regulatoçË
³
RaDioacTiv± fI²e contrNL in-
st²umenTs are pu²ged the saMe way
as oTHe³s. Just ´on't puµge THem if
the radioactiVe ViaLs a²± broken¶ ·n
that case, tu²n ¸em in The way it
TelLs you in the weapon
-»2 TM¼
è¾re CÄN½éÄl ins½rumeN½S ÉĽ listeÆ
¾N êë
ë50ìíîï
½¶a½ NeeÆ ÈurgiNg are
cÄllima½or ëìíì îraƾÄaï½¾ðeñ; ëò37
óaN½el aÉÆ ëôõ8 ölÇoÍ ½eâesco÷ø
ùëì98 Ìúw¾½zerûü
ANºVvG»¼
âaser
ðñòóòóôõõ
ö
ö÷øùú
½
rýNgeÂiNÆerþ ë61 ÿĀāâĂaNă s¾gH½Ą ë
5û &
ü
³
Read up on ComPresSeD gases
laser guNNerą ½ra¾Ner aNĆ seCONd
in AR 700¹68º»¼to²age anD ½anDl¾
genera½¾oN ćÊss¾Ĉe Èer¾scoĉes ëĊ5ċČ
ing of ¿ompresseD Gases anD GaS
aÉÆ ëõ6čĎď
¿yLinDersÀ WorKÁng wÁtH
a
HÁgH-
preSsu²e nitrogen cylinDer aÂD
i
Ts
ac²EssorIEs ³an bE danGerou´ unµ
less you knoW what you're doinG.
´
ëaåe Suçe Đđe ĒēâĔÉĕeĖ ¾S CÄréeėĘęĚ
¿ÊěĜeĝ ÊÉÆ ĞÊS Ęğe ĠçÄÈeġ SÊĢeģĤ
Æeĥ¾Ħes-ħusĨ
ĩâuĪ
ÊNī/Ĭç
ĭÊęĮe
įçĽeC½¾ÄÉ CİĠı
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