Ulvac GP-1GRY, Instruction Manual, Page: 4 / 44

SAFETY CAUTIONS
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Safety Cautions
For safe use of this vacuum gauge, carefully read this manual and comply with the warnings and cautions
given in the manual.
Turn OFF power.
Before touching any terminal on the rear of the meter or if there is a possibility of
touching it, turn OFF the vacuum gauge power and the power applied to the
setpoint output terminal. Contact with the terminal, to which the voltage (24
VDC) is applied, will cause electric shock if power is turned ON.
Turn OFF power.
If the vacuum gauge fails, immediately turn OFF the power.
Use of a failed gauge may cause fire or electric shock. For repair, contact your
local ULVAC representative or ULVAC JAPAN.
Turn OFF power.
Before touching the power terminal on the rear of the controller or if there is a
possibility of touching it, turn OFF the power to the vacuum gauge. Contact
with the terminal, to which the voltage (24 VDC) is applied, will cause electric
shock if power is turned ON.
Turn OFF power.
If the vacuum gauge gets unusually hot or gives off smoke or unusual smell,
immediately turn OFF the power. Otherwise, fire can result. For safety,
contact your local ULVAC representative or ULVAC JAPAN.
Turn OFF power.
Turn OFF the power before replacing a fuse. Replacing a fuse with the power
turned ON can cause electric shock.
Turn OFF power.
Whenever mounting the gauge, unplug the power cable.
Before operating the gauge, make sure that components are securely connected.
Use rated fuse.
Use a fuse of the prescribed rating. Do not use a fuse other than the prescribed
one or do not short the fuse holder. Damage or fire may result.
Check line voltage.
Prior to turning ON the power, make sure that the vacuum gauge operating
voltage and the supply voltage are in agreement. Connection of incorrect power
can cause damage to the vacuum gauge and fire.
Check connection.
The contact output capacity is 125 VAC 1 A (resistance load). If power higher
than this is opened/closed, do not use the contact of the vacuum gauge, but use a
large capacity switch in conjunction.
Check connection.
The recorder output is outputted afloat from ground potential. Always connect
the recorder input to the recorder terminal insulated from ground. If it is
connected to ground erroneously, the meter will not indicate correct values and the
vacuum gauge may fail.
Don't disassemble.
Do not try to disassemble the vacuum gauge (meter, controller, cable and sensor
head).
Don't modify.
Do not modify the vacuum gauge (meter, controller, cable and sensor head). If it
is modified, its functions are not warranted. Also fire or electric shock may
result.