
111.
MAINTENANCE
111.
WARTUNG
111.
MAINTENANCE
3.1.
Vidange d'huil e
3.1.
Olwechsel 3.1. Draining the oil
La vidange doir erre faite lorsque la pompe
est ch aude.
Devisser le bouchon de vidange (pl.
01
repere H).
Lor sque toute l'huile de la cuve s' est ecoulee,
revisser provisoirement le bouchon H et faire tourner
la pompe pendant 10 secondes environ en laissant
l' aspir ation ouvert e pour chasser l 'hu i le du bl oc
fonctionnel.
Elim iner cette huile par le bouchon
H.
Visser le bouchon
H
Devisser le bouchon de remplissage d'huile
(pl. 01 repere F)
Rernplir avec de l' hu ile neuve jusqu'au
milieu du niveau (pl. 01, repere G).
3.2.
Rin age
L'o per ation de vidange peut s' accom pagner
d'une operation de rin<;age, si l'on constate que
l'huile de vidange est sale. Pour le rin<;age, ii faut
compter une quantite d'huile neuve egale
a l
a capacite
de la pompe en huile.
Apres avoir vidange l' hui le de la cuve, revisser
provisoirement le bouchon repere
H .
Faire tourner la
pompe. en faisant couler l'huile neuve dans !'orifice
d'aspir ation .
Arr eter la pom pe et elim iner l'huile de rinc;a-
ge par le bouchon
H.
Visser le bouchon
H
et faire le
plein d'huile neuve.
Der Olwechsel darf nur be, warmer Pumpe
vorgenommen werden.
Olablap schr aube (Teil , Anhang
01)
herausdrehen. Wenn alles 01 abgelassen ist,
Schraube wieder einlegen und die Pumpe
etwa
10
sec m i t o ff enem _A saugstu t zen
laufen lassen, damit das 01 aus dem
Schopfraum der Pumpe herausgetrieben
wird . Auch dieses
01
wird durch die
Ablaf3o t f nu ng
H
en tfern t.
Olabla/3 mit der Schraube H verschl ie) en .
Verschlu p der O lein la/3o ff nu ng abschrau-
ben (T eil F Anhang 01)
Fr isches
01
bis zur Mitte des Schauglases
(TeiI G Anhang 01) ein fu llen.
3.2. Olspulung
1st das
01
in der Pumpe stark verschmutzt•
dann sollte der Olwechsel mit einer Spulung verbunden
werden.
Dazu benotigt man eine Olmenge, die grop er
ist als die normale Fullmenge. Nach dem Ol ablaµ
wird die Offnung provisori sch mit Teil
H
versch l ossen.
Dann
gieP
t man das frische
01
in die A n saugof fnu ng
der laufenden Pumpe. Dann wird die Pumpe
abgeschaltet
und
das
01
abgelassen
.
Nach
V
er
schr
au-
ben des Verschlusses
H
wird frisches
01
eingefullt.
The
quality
of
the
pump
oil
is
extremely
im
por
a
t
nt
for
proper
operation
The
vacuum
pump
oil
mu
st
be
in
_
sp
ected
periodically
for
_
con
tam
inan!
s
and
oil level which must be maintained m the centerof the sight glass.
011
level
is checked with the pump not rotating because he lev I will ary du ing
opera
tion
.
Alcatel
pump
s
may
be
turned
off
for
visual
ml
level
inspection,
whilebackingdiffusionpumps.etc..asthey sealunder vacuum whenturned
off.
The
oil
consumtpion
.
due
to
exhausting
gases
,
will
depend
upon
fr
e-
quency of pump down and operating pressure.
Al
cat
el
Exhaust
Mist
Eliminators
will
reduce
loss
co
nside
rably
by
conde
nsin
g
expelled oil vapors, and returning the oil to the reservoir.
I
nspec
i
o
t
n
o
f
th
e
oil
leve
l
will
also
indicate
oil
co
nt
amination
.
The
oil
should
have a light amber color.
If
brownishin color,the oil should be change.d
Another indication of oil contamination, is an increase in base pressure of
thepump. Alcatel pumps are equipped with gasballast. which canbeused
t
o
re
ge
nerate
ml
co
ntam
in
ated
with
condens
b
a
l
e
vapors
.
The
oil
will
be
cloudywith a high basepressure.In thiscase.closetheinlet andopen
thegas ballast valveIor approximately thirty (30) minute.sThe basepressure
should
reduce
to
a
norma
l
value
after
clo
sin
g
the
gas
ba
lla
st
valve.
3.2.
Flushing
If the base pressure is still high, an oil changemust be performed
The oil should be drained when hot and discarded. When the oil has
drained, vent theintake and run the pump for several seconds to expel oil
trapped inside the pump stages.Re-chargewith fresh clean oil through
the fill plug. to the middle of thesight glass.
In some extreme cases, deposits have built up inside the pump so that
new oil is contaminated within a few hours In this case, the flushing
procedure should be performed, as detailed herein.
Drain oil from hot pump and re-install the drain plug. Place a cloth lightly
over the exhaust port to contain oil splash. Turn the pump on, with inlet
open
and
slo
wly
pour
fr
esh
oil
into
the
inl
et
-
equal
to
the
pump
's
c
a
p
acity.
Turn off pump and drain flushing oil. Re-chargeoil level to middle of
sight glass by way of the oil fill plug.Alcatedoil VPl is recommended
lor re-chargingor flushing Alcatel vacuum pumps
The cleanliness of the oil will greatly prolong the life and performance
ol the pump. A blank statement for oil changescannot be made for all
a
pplication
,
s
due
to
the
dif
f
erences
in
operating
co
ndition
s.
A
genera
l
rule
is
th
e
oil
change
every
2
to
3
months
in
clean
a
pplications
;
ie, diffusion fore pump on UHV systems
Extreme
a
pplic
ation
s.
s
uch
as
ion
implan
ta
tion,
chemical
stripp
n
i
g
or
et
ching
systems
could
r
e
quire
weekly
ma
i
ntenanc
o
e
il
changes
or
expensive
trappingtechniques.