Yokogawa ADMAG AXW - Manual (Page 5)

<1. INTRODUCTION>
1-2
IM 01E25D11-01EN
Protective grounding terminal
Functional grounding terminal
(This terminal should not be used as a
protective grounding terminal.)
Alternating current
Direct current
1.1 Using the Magnetic
Flowmeter Safely
(1) Installation
WARNING
• Installation of the magnetic flowmeter must
be performed by expert engineer or skilled
personnel. No operator shall be permitted to
perform procedures relating to installation.
• The magnetic flowmeter must be installed
within the specification conditions.
• The magnetic flowmeter is a heavy instrument.
Be careful that no damage is caused to
personnel through accidentally dropping it, or
by exerting excessive force on the magnetic
flowmeter. When moving the magnetic
flowmeter, always use a trolley, forklift, or crane
and have at least two people carry it.
• When the magnetic flowmeter is processing
hot fluids, the instrument itself may become
extremely hot. Take sufficient care not to get
burnt.
• Where the fluid being processed is a toxic
substance, avoid contact with the fluid and
avoid inhaling any residual gas, even after the
instrument has been taken off the piping line for
maintenance and so forth.
• Do not apply excessive weight, for example, a
person stepping on the magnetic flowmeter.
• All procedures relating to installation must
comply with the electrical code of the country
where it is used.
(2) Wiring
WARNING
• The wiring of the magnetic flowmeter must
be performed by expert engineer or skilled
personnel. No operator shall be permitted to
perform procedures relating to wiring.
• When connecting the wiring, check that
the supply voltage to the converter is within
the range of the voltage specified for this
instrument before connecting the power cable.
In addition, check that no voltage is applied to
the power cable before connecting the wiring.
• The protective grounding must be connected
securely at the terminal with the mark to
avoid danger to personnel.
(3) Operation
WARNING
• When opening the cover, wait for more than 10
minutes after turning off the power. Only expert
engineer or skilled personnel are permitted to
open the cover.
• Do not open the cover in wet weather or humid
environment. When the cover is open, stated
enclosure protection is not applicable.
• Be sure to set parameters as “Protect” on the
write protect function after finish of parameter
setting work.
Under extremely rare case, the infra-red
switches may respond unexpectedly in
such conditions as sticking ball of water or
extraneous substances on the surface of
display panel glass according to the principle of
infra-red switch operation.
Its probability rises in such cases as sticking
rain water by storm or other similar situation
and washing up work near flowmeter
installation place.
Either to illuminate or stop illuminating the infra-
red switches by the flashlight may cause the
mis-reaction.
Refer to the manual for converter on how to
use the write protect function in detail.