User manual

Instructions for Use
Use
1
Variable Leak Valve User Manual / 87-400-085-01 (D) 15/36
Use
WARNING!
The main danger of explosion in vacuum equipment occurs during
backfilling from pressurized gas cylinders.
Explosions cause flying debris which may cause serious personal injury or death
and destroy equipment.
The following precautions must be exercised when admitting gas into
a vacuum system:
1. Check that the leak valve is in the closed position before
admitting gas into the backfill line.
2. Always use a pressurized relief valve in the backfill line.
CAUTION!
Never operate the valve without knowing the relationship of the stop position to
the point of leak tight closure. The point at which the valve closes cannot be
felt by the operator and severe overdriving may fracture the sapphire.
Figure 4
Knob adjustment