7-1.2.10 Engine Clutch. All hoists except direct
geared hoists shall be provided with a clutch for
disengaging power to the machinery. The clutch control
shall be within reach from the operator's station.
7 -1.2.11 Electric Resistors
(a) Resistor units shall be supported to minimize
vibration effect.
(h) Provision shall be made to prevent broken parts
or molten metal from t~llIing from the hoist.
(c) If ventilated or nonventilated resistor enclosures
are provided, the enclosures shall be installed to prevent
the accumulation of combustible matter.
7-1.2.12 Switches. On electric driven hoists, a
motor circuit switch or circuit breaker of the enclosed
type with provisions for locking in open position shall
be provided in the main power supply.
7-1.2.13 Operator's Cab (When Provided)
(a) If a cab is provided and windows are glazed,
the windows shall be of safety glazing material as
defined in ANSI Z26.1. Windows shall be located to
provide the operator with visibility in all required
directions. Refer to ANSI Z26.1.
(b) A clear passageway shall be provided from the
operator's station to an exit door ..
(c) Handholds or steps shall be provided to facilitate
entrance to and exit from the cab, when necessary.
(d) Cab lighting, either natural or artificial, shall
provide a level of illumination that enables the operator
to observe the operating controls.
11
ASME B30.7-2001
(e) Where internal combustion engines are the prime
mover for the hoists, the exhaust shall be piped in
such a manner that exhaust gases cannot enter open
windows of the cab, or be pulled into the cab ventilating
system, where such exists.
(fJ The cab construction, when applicable, shall offer
protection from falling objects. The protection shall
be at least equivalent to that provided by standard 2
in. (51 mm) lumber.
(g) The noise level at the operator's station should
be a consideration in the manufacture of all new basemounted
drum hoists.
7-1.2.14 Lubrication. Lubricating points should be
accessible without the necessity of removing guards or
other parts.
7-1.2.15 Fire Extinguishers. A portable fire extingu.
isher with a basic minimum extinguisher rating of
10 BC shall be installed in the cab or operator's station.
Section 7-1.3: Installation
7-1.3.1 Attachments and Anchor!:lges. Attachments
and anchorages for hoist bases shall provide
mounting of the hoist and shall be capable of withstanding
loads imposed by the hoist under operating conditions.
The weight of the hoist and loads imposed by
the load ropes shall be provided for.
7-1.3.2 Location of Drum Hoists. Drum hoists
shall be located in a manner that provides proper rope
spooling on the drums.