5
SITE PREPARATION REQUIREMENTS
The 777 Programmable Weight Indicator is a precision measuring instrument. As with any
precision instrument, it requires an acceptable environment to operate at its peak performance
and reliability. This section is provided to assist you in obtaining such an environment.
Electrical Power
The 777 is designed to operate from 90 to 260 VAC at 50/60 Hz. No special order is required
for operation at 230 VAC.
Caution!!! - To avoid electrical hazard and possible damage to the indicator,
DO NOT, under any circumstance, cut, remove, alter, or in any way bypass
the power cord grounding prong.
On models requiring 230 VAC power,
it is the responsibility of the customer
to have a
qualified electrician install the proper power cord plug which conforms to national electrical
codes and local codes and ordinances.
The power outlet for the 777 should be on a separate circuit from the distribution panel. This
circuit should be dedicated to the exclusive use of the indicator. The wiring should conform to
national and local electrical codes and ordinances and should be approved by the local
inspector to assure compliance.
To prevent electrical noise interference, make certain all other wall outlets for use with air
conditioning and heating equipment, lighting or other equipment with heavily inductive loads,
such as welders, motors and solenoids are on circuits separate from the 777. Many of these
disturbances originate within the building itself and can seriously affect the operation of the
instrument. These sources of disturbances must be identified and steps must be taken to
prevent possible adverse effects on the instrument. Examples of available alternatives include
isolation transformers, power regulators, uninterruptible power supplies, or simple line filters.
CAUTION!
When in parallel runs, locate Load Cell cables a minimum of 24 inches
away from all AC wiring.
INSTALLATION
Unpacking
Carefully unpack and remove the indicator from the packing box. Inspect the unit for any signs
of damage due to shipping, such as exterior dents and scratches. Retain the packing and
shipping carton for return of instrument if necessary. It is the responsibility of the Purchaser to
file all claims for any damages or loss in transit incurred, unless the responsibility has been
accepted by the Seller in its proposal.
Placement
Place the indicator on a stable, vibration-free location, either a desk or solid table or wall
mounted. Be certain all cords and cables are out of normal traffic. If wall mounted, make
certain that the structure and mounting bolts are of sufficient strength to support the 777.
It is the responsibility of the customer to provide adequate mounting
hardware appropriate to wall mounting conditions assuring safety to both the
operator and the instrument.
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