The enclosures shall be building walls, ceiling
materials and fireproofing conforming to governing building codes. The
regulations included in this section establish minimum standards for hoistway
enclosures. These regulations are not intended to supersede applicable local
building codes establishing higher standards.
(a) Dumbwaiter Hoistway Enclosures. Hoistway
and hoistway enclosures shall comply with the following:
(1) Section
3010(a).
Enclosures of Hoistways.
(2)
Section
3010(b). Strength
of Enclosures.
(3) Section
3010(c).
Construction at Bottom of Hoistway.
(4) Sufficient overhead clearance shall be
provided for reasonable overtravel and final stopping.
EXCEPTION: Dumbwaiters of the undercounter
type.
(b)
Dumbwaiter Machine Rooms, Machinery Spaces, and Access to Machinery.
(1) The control panels shall be located to
conform to the requirements of CCR, Title 24,
Part 3, Article 620.
(2) When overhead machines of power
dumbwaiters are located within the hoistway, the following regulations shall
apply:
(A) The controller shall be located
outside the hoistway.
(B) A floor
capable of supporting 300 pounds shall be installed below the machine in
hoistways over 9 square feet in area.
(C) Access to the machine space shall be
provided by means other than the top hoistway landing door.
(D) Access to all parts of the machine shall
be provided from the access door, or additional doors, or removable panels
shall be installed in the hoistway enclosure for safe and convenient access to
the machine.
(E) Access doors shall
be not less than 18 inches in the least dimension, nor less than 4 square feet
in area, and shall be kept locked.
EXCEPTION: Removable panels shall be provided with an
electric contact that will prevent operation of the dumbwaiter when the panel
is removed.
(F) Access to
the machine space may be by means of a portable ladder provided the bottom of
the access door is not more than 8 feet above floor level and the access door
is located below the room ceiling line.
(G) Access to the machine space shall be by
means of a permanent ladder or stairs when the bottom of the access door is
more than 8 feet above floor level or when the access door is located above the
room ceiling in an attic or crawl space.
1.
Landings at the top of permanent ladders and walkways in attics or crawl spaces
shall be provided. The headroom above walkways shall be not less than 4 feet
and the walkways shall be provided with permanent electric
lighting.
(3)
When basement machines of power dumbwaiters are located within the hoistway,
the following regulations shall apply:
(A) The
controller shall be located outside the hoistway.
(B) The machine space shall be provided with
an access door.
(C) The access door
shall be not less than 18 inches in its least dimension and shall be kept
locked.
(D) The access door shall
be provided with an electric contact that will prevent the dumbwaiter from
operating with the door open.
(E)
Access to overhead sheave spaces shall be provided. The access shall conform to
the requirements for access to overhead machines in Section
3078(b)(2) unless
the equipment at the top of the hoistway can be serviced safely from the
hoistway landing door.
(4) When the machines of power dumbwaiters
are located outside the hoistway, either above or at the side, the following
regulations shall apply:
(A) Machine rooms or
machine enclosures shall be provided conforming to the requirements of machine
rooms for elevators in Section
3011 or the machine shall be
enclosed with removable panels provided with electric contacts that will
prevent the dumbwaiter from operating with the panels removed.
(B) Access to machine rooms or machine
enclosures located above the hoistway shall conform to Section
3011(c) except
that a permanent ladder may be installed for access to the roof or attic
space.
(C) The clear headroom in
machine rooms or machine enclosures located outside the hoistway shall be not
lss than 6 feet 3 inches.
(5) Handpower dumbwaiter machines may be
located inside the hoistway enclosure at the top or bottom without intervening
enclosures or platforms.
(c) Electrical Wiring, Pipes, and Ducts in
Dumbwaiter Hoistways, Machine Rooms, or Machinery Spaces.
(1) Electrical wiring and equipment in
dumbwaiter hoistways, machine rooms, and machinery spaces shall comply with
CCR, Title 24,
Part 3, Article 620.
(2) The installation of pipes, ducts and
wiring shall comply with Section
3012.
(d) Dumbwaiter Machinery and Sheave Beams,
Supports, and Foundations. Machinery and sheave beams, supports, and
foundations shall comply with the applicable requirements of Section
3015.
EXCEPTION: Hand dumbwaiter machines may be supported by
wood beams.
(e) Pits for
Dumbwaiters.
(1) Pits are not required for
power or hand dumbwaiters; however, sufficient pit and bottom clearance shall
be provided for reasonable overtravel and automatic final stopping.
(2)
Dumbwaiter pits shall be
maintained in reasonably clean and dry condition.
(f) Horizontal Car and Counterweight
Clearances. Horizontal car and counterweight clearances shall conform to
Sections
3018(a),
3018(b),
3018(c), and
3018(d).
(g) Protection of Spaces Below Hoistways of
Dumbwaiters.
Where the space below the hoistway is used for a
passageway, or is occupied by persons, or if unoccupied is not permanently
sealed against access, the following requirements shall be conformed
to:
(1) Dumbwaiter cars and their
counterweights shall be provided with safeties which may be operated as a
result of the breaking of the suspension means and which may be of the inertia
type without governors. The safety may be located in the car or counterweight
crosshead. See Section
3079 for test
requirements.
(2) The cars and
counterweights shall be provided with spring buffers. Oil buffers may be used.
(A) Spring buffers shall be so designed and
installed that they will not be fully compressed when struck by the car with
its rated load at 125 percent of rated speed, or governor tripping speed if a
governor is used.
(3) Car
and counterweight buffer supports shall be of sufficient strength to withstand
without permanent deformation the impact resulting from the condition listed in
Section
3078(g)(2)(A).
EXCEPTION: Where it can be demonstrated by recognized
engineering calculations, submitted in writing by a qualified engineer, that
the structure over the passageway, vault, or other usable space is capable of
withstanding the impact of the loaded car or the counterweights falling their
maximum distance, no safety device or buffers need be
provided.
(h)
Protection of Hoistway Landings Openings.
(1)
Hoistway landing openings of power dumbwaiters shall be provided with
hoistway doors or gates which will fill the full height and width of the
openings.
(2)
Hoistway landing openings of hand dumbwaiters having a landing sill
that is less than 30 inches above the floor level shall be protected by doors
or gates which will close automatically when the car leaves the landing. When
the doors or gates are arranged so there is no possibility of a shear, these
doors or gates may be full automatic.
(3) The width and height of door openings for
power dumbwaiters shall not exceed the width and height of the dumbwaiter car
by more than 1 inch in each dimension.
EXCEPTION: One door opening may be of sufficient size
to permit installing and removing the car, but shall be not more than 4 feet 9
inches in height.
(4) The
width of door openings for hand dumbwaiters shall not exceed the width of the
car by more than 6 inches, and the maximum height of the opening for any height
of car shall be 54 inches.
(5)
Hoistway gates shall comply with the applicable portions of Section
3020(c).
(6) Hoistway doors of the horizontal or
vertical slide or of the swing-type, shall be located so there is not more than
4 inches from the inside face of the door to the nose of the landing
threshold.
(i) Hoistway
Door Locking Devices.
Hoistway doors or gates of power dumbwaiters
shall be equipped with interlocks or combination mechanical locks and electric
contacts (contact locks) approved for use on dumbwaiters.
EXCEPTIONS:
1.
Doors or gates of existing dumbwaiters installed with electric contacts
provided the landing sill is not less than 30 inches above the floor
level.
2. Doors or gates of
dumbwaiters installed before June 5, 1947 with approved devices to prevent the
operation of the dumbwaiter with any door or gate open.
3. Existing hydraulic dumbwaiters equipped
with semi-automatic or full automatic doors or gates.
4. Hoistway doors or gates for dumbwaiters
having a capacity of 20 pounds or less and doors or gates not more than 18
inches wide or 24 inches high may be equipped with approved devices to prevent
operation of the dumbwaiter with any door or gate open.
(Title 24, Part 7, Section
7-3078)
Notes
Cal. Code Regs. Tit. 8, §
3078
1. New
subsection (h)(6) filed 6-23-77; effective thirtieth day thereafter (Register
77, No. 26).
2. Amendment of Exception within subsection (g)(3)
filed 12-22-78; effective thirtieth day thereafter (Register 79, No.
1).
3. Amendment of subsections (b)(1), (c)(1), (i) and NOTE filed
6-29-94; operative 7-29-94 (Register 94, No. 26).
4. Editorial
correction of subsection (b)(2)(F) (Register 95, No.
34).
Note: Authority cited: Section
142.3, Labor
Code. Reference: Section
142.3, Labor
Code.
1. New subsection
(h)(6) filed 6-23-77; effective thirtieth day thereafter (Register 77, No.
26).
2. Amendment of Exception within subsection (g)(3) filed
12-22-78; effective thirtieth day thereafter (Register 79, No. 1).
3. Amendment of subsections (b)(1), (c)(1), (i) and Note filed 6-29-94;
operative 7-29-94 (Register 94, No. 26).
4. Editorial correction of
subsection (b)(2)(F) (Register 95, No. 34).
Group II regulations
apply to existing elevators installed prior to October 25, 1998. Italicized
paragraphs, sentences, or phrases apply to all existing elevators while
non-italicized apply to elevators installed after 1970 or after the date the
regulation was adopted.