1/2" screw fitting:
■
For tightening, use a 1
3
/
16
" wrench;
■
for holding up, use a 1" wrench.
Tighten all screw fittings up to their stop and then turn them back by 1/4 turn
for relief.
If flexible pressure lines need to be routed with bending radii less than 30 cm,
install 90° elbows; see Section 1.4
To extend the helium pressure lines, use line couplings; see Section 1.4.
Bundle the flexlines and protect these against tripping and damage.
Installation
21
GA12119_00_A3 - 01/2012 - © Oerlikon Leybold Vacuum
Fig. 6 Mounting and removing self-sealing screw fittings
Fixing the screw fitting on the compressor unit
Fixing the screw fitting on the cold head
Removing the screw fitting from the compressor unit
Removing the screw fitting from the cold head
turn
hold up
loosen
Cold
head
Compressor unit
Cold
head
Compressor unit
Cold
head
Compressor unit
turn
turn
turn
hold up
hold up
hold up
hold up
hold up
loosen
1
1
/
16
“ 1“
1
3
/
16
“1
3
/
16
“
(27)
1
1
/
8
“
on the adsorber
1
1
/
16
“ 1“
1
3
/
16
“
1
1
/
8
“
(27)
