Erbe APC 300, Notes On Use

Page: 20 / 182

20
Do not use any kind of tool to operate, attach or detach the pres-
sure reducer.
Do not smoke in the vicinity of gas cylinders and pressure reduc-
ers.
4.2 Changing the cylinder
IMPORTANT! The APC 300 must be switched on in order to
change the bottle.
Also observe the illustrations at the start of these instructions.
1. Close the gas cylinder valve! The gas cylinder valve may be
a little difficult to turn in some cases.
2. Remove the pressure line (quick coupling) from the connec-
tion on the rear of the APC device.
3. The pressure line still contains a residual amount of argon
that must be discharged. To do so, place the quick coupling
onto the purge post on the rear of the APC device and press
against it. The residual argon is now discharged with a loud
hissing sound (check: 0 must be shown on the high pressure
manometer).
4. In the counter-clockwise direction: turn and remove the re-
tainer nut of the pressure reducer by hand from the argon
gas cylinder (do not use any tools).
5. Change the argon gas cylinder.
6. In the clockwise direction: screw the retainer nut of the pres-
sure reducer by hand on the argon gas cylinder and secure
tightly (do not use any tools). Ensure that the O-ring is in ap-
propriate working order and is correctly positioned in the
groove of the cylinder connector.
WARNING! Check that the pressure reducer is securely posi-
tioned on the argon gas cylinder. The pressure reducer
should not be loose.
7. Place the pressure line (quick coupling) onto the connection
on the rear of the APC device.
OBJ_DOKU-194191-002.fm Seite 20 Donnerstag, 9. Juni 2016 11:08 11