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7700 Series Spark Resistant Hoists are designed for
Division I applications where, under normal operating conditions,
the atmosphere contains hazardous concentrations of flammable gases, dust, or
other materials.
Specifically engineered for continuous heavy-duty industrial applications
- between 400
lbs (182 kg) and 1,500 lbs (682 kg) - ARO 7700 Series Spark Resistant Hoists are
available with bronze top hook or trolley adapter suspension.
7700 Series Spark Resistant Hoists come complete with 10 feet
(3m) of standard lift and either 6 feet (1.8m) of pendant control or 5 feet
(1.5m) of pull chain control.
SPARK RESISTANT FEATURES:
- Stainless steel load chain and solid bronze
hooks to prevent accidental sparking.
- Pendant control handles, when ordered, are
covered with an industrial-grade vinyl grip.
- Hoist capacities are reduced and speed
adjustments are locked into place to maximize chain life.
DIVISION 1 & 2 APPLICATIONS
The following definitions may be used as a guide.
The actual Division distinction for each application must be determined by your
local inspecting authority of the fire underwriters.
DIVISION I
- Atmospheres containing hazardous
concentrations of flammable gases, dusts, or fibers, continuously,
frequently or periodically, under normal operating conditions.
DIVISION 2
- Atmospheres, normally non-hazardous, in which
a hazardous concentration of flammable gases, dusts, or fibers, occurs when
a container or handling system fails, or the ventilating system which
normally keeps the concentration non-hazardous fails.
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