GA 12.107/5.02 - 12/97
Installation
12
Fig. 6 Mounting the self-sealing couplings
Stabilizing wrench
Wrench for tightening
2.6 Mounting the Flexlines
Information for working with self-sealing couplings
The connector lines and elements are equipped with
self-sealing couplings. These connectors can be at-
tached and detached without helium escaping.
Unscrew the protective caps from the couplings. Check
all connectors for evidence of dust and grime and, if
necessary, use a clean and lint-free cloth or a soft, clean
brush (e.g. toothbrush) to clean the fittings.
Never use solvents to clean the connections! The fittings
shall never be greased or oiled.
Use only the supplied open-end wrenches, or open-end
wrenches approved by Leybold, to mount flexlines.
Attach or detach flexlines only when the pressure unit is
switched off.
Never twist flexlines.
Use one wrench to screw down the coupling and a
second to stabilize the connector nipple; see figures 8
and 9.
1/2” coupling:
tighten with 1
3
/
16
” wrench,
stabilize with 1” wrench.
Tighten down all couplings as far as possible and then
back them off by 1/4 turn to relieve strain.
If the flexlines are to be laid in such a way that radii of
less than 20 cm (8“) are required, it will be necessary to
install 90
°
elbows; see Section 1.4.
Use insulating adapters for electrical installation; see
Section 1.4.
Use hose couplers to extend the flexlines; see Section
1.4 for details.
Connect compressor unit and cold head
Follow the instructions for the work.
Connect the flexlines in sequence, (8/1) to (8/4), corre-
sponding to the direction in which the helium flows.
Caution
Do not mix up the high- and low-pressure
connections.
Interchanging these connections can cause
damage inside the cold head.
After installation, check the helium filling pressure at the
pressure gauge.
Detach the flexlines by unscrewing the couplings in
reverse order.
Once they have been detached, fit protective caps on the
couplings.
Summary of Contents for RW 6000-1
Page 23: ...GA 12 107 5 02 12 97 Notes 23...
