
ii
Safety Precautions
In order to safely use the display unit (below, "this unit"), please read the instruction manual
and the safety precautions below.
Request repairs for this unit from the dealer where purchased, from
ULVAC Inc., or from the URL listed in this instruction manual.
If this unit is accidentally damaged, immediately turn off the power supply.
There is a risk of fire and electric shock from use in this state.
If this unit produces unusual heat, smoke, or a strange smell, immediately
turn off the power supply. There is a risk of fire from use in this state.
High temperature warning
Do not touch the surface of the gauge head during operation or after
operating ends as it reaches high temperatures. There is a risk of burns if
touched.
Before turning on the power supply, check that this unit operating voltage
and the supply power are the same. If the wrong power supply is connected,
there is a risk of damage to this unit and to devices connected to this unit and
a risk of fire. The overvoltage category is category I.
Power supply lightning surge handling
For the 24 VDC power supply, use a power supply that handles lightning
surges.
If the power supply does not handle lightning surges, there is a risk of damage
to this unit and to devices connected to this unit and a risk of fire.
Excessive vacuum chamber pressure
Do not connect this unit in a location where the gauge head's internal
pressure exceeds atmospheric pressure. If the gauge head's internal pressure
exceeds atmospheric pressure, there is a risk of damage to the gauge head
and it may pose a hazard to its surroundings, including to people, by flying
off its connector. When exceeding atmospheric pressure, install an isolation
valve to ensure that the gauge head's internal pressure does not exceed
atmospheric pressure.
Always connect this unit electrically to a grounded vacuum chamber. Use a
conductive metal clamp on the NW flange. If this unit is not correctly connected,
it will not only show the wrong pressure, there is a risk of damage to this unit and
the equipment connected to this unit and a risk of fire.
When this unit is insulated from the vacuum chamber, ground the case section
(D-sub connector shell section) with a class D (class 3) ground.
Avoid using this unit in locations with high humidity and condensation or in
locations exposed to water. There is a risk of malfunction, ground leakage, and
fire if water penetrates inside this unit.
Do not disassemble this unit. There is a risk of fire and electric shock. If
disassembled, sensor operation cannot be guaranteed.
WARNING
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CAUTION