0065-0647-OM Rev E 7550 OWNER’S MANUAL
SITE PREPARATION REQUIREMENTS
The Detecto 7550 Wall-Mount Fold-Up Wheelchair Scale is a precision weight indicating
instrument. As with any precision instrument, it requires an acceptable environment to operate
at peak performance and reliability. This section will assist you in obtaining such an
environment.
Environmental
For indoor use only.
Suitable for dry environments only RH < 90% and non-condensing environments.
NEVER allow the scale to get wet.
The scale meets or exceeds all certification requirements within a temperature range
of 14 to 104 °F (-10 to +40 °C).
The scale should be placed out of direct sunlight and to provide adequate air circulation, keep
the area around the scale clear.
Do not place the scale directly in front of a heating or cooling vent. Such a location will subject
it to sudden temperature changes, which may result in unstable weight readings.
When using the AC power adapter, ensure that the scale has good, clean AC power and is
properly grounded. In areas subject to lightning strikes, additional protection to minimize
lightning damage, such as surge suppressors, should be installed.
Electrical Power
The Detecto 7550 Wall-Mount Fold-Up Wheelchair Scale has been designed to operate from a
100V to 240V AC 50/60Hz 12V DC 1A wall plug-in UL/CSA listed AC power adapter (Cardinal
part number 6800-1045). NOTE: On installations using 220V to 240V AC, use the optional 100
to 240V AC 12V DC 1A Multi-Pin Input AC power adapter (Cardinal part number 6800-1047).
The socket-outlet supplying power to the indicator should be on a separate circuit from
the distribution panel and dedicated to the exclusive use of the indicator.
The socket-outlet shall be installed near the equipment and shall be easily accessible.
Electrical Noise Interference
To prevent electrical noise interference, make certain all air conditioning and heating
equipment, lighting, or other equipment with heavily inductive loads, are on circuits separate
from the system. These sources of disturbances can affect the operation of the scale. Steps
must be taken to prevent possible adverse effects on the scale. For example, using simple line
filters, isolation transformers, power regulators, or uninterruptible power supplies.
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