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GEM G100 Manual page 3

Institutional pendent sprinkler

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INSTALLATION IN CONCRETE WITH TYPE E ESCUTCHEON
OPERATION
In the standby condition, the design of
the Model G100 is such that a sus-
pended load of 75 lbs. (34 kg) or more
applied to the linkage mechanism will
release the sprinkler.
Also, when
properly installed, the escutcheon is
held fast to the ceiling to deter removal
of the escutcheon. The shape of the
escutcheon cannot easily be grasped,
which further deters tampering.
A glass bulb operating element is pro-
tected within the linkage mechanism of
the Model G100. The bulb contains a
fluid which expands when exposed to
heat. When the rated temperature is
reached, the fluid expands sufficiently
to shatter the glass bulb. Shattering of
the glass bulb releases the linkage
mechanism holding the sprinkler
closed, which then allows the sprinkler
to activate by allowing the deflector to
extend downward, and water to flow.
INSTALLATION
The 5.6 K-Factor, Model G100 Sprin-
klers must be installed in accordance
with the following instructions:
NOTES
Refer to the Design Criteria section for
important information regarding the
piping installation design and its ef-
fect on maintaining the integrity of
the tamper resistant design of the In-
stitutional Escutcheons.
If the bulb within the linkage mecha-
nism is cracked or there is a loss of
liquid from the bulb, do not install the
sprinkler. With the bulb in the hori-
zontal position, an air bubble of ap-
proximately 1/16 inch (1,6 mm) di-
ameter should be present.
A leak tight 1/2 inch NPT sprinkler
joint should be obtained with a torque
FIGURE C
of 7 to 14 ft.lbs. (9,5 to 19,0 Nm). A
maximum of 21 ft.lbs. (28,5 Nm) of
torque is to be used to install these
sprinklers. Higher levels of torque
may distort the sprinkler inlet with
consequent leakage or impairment of
the sprinkler.
Do not attempt to compensate for im-
proper location of the sprinkler fitting
by under- or over-tightening the
sprinkler. Readjust the position of the
sprinkler fitting to suit, or increase or
decrease the number of
Spacers, as applicable.
After the installation is complete,
make certain that the Institutional
Escutcheon is held fast to the mount-
ing surface and that it sits squarely
against the ceiling around its entire
perimeter.
1. The G100 Sprinklers must be in-
stalled pendent and with the center-
line of their waterway perpendicular
to the ceiling.
2. With the Institutional Escutcheon in
place and with pipe thread sealant
applied to the pipe threads, hand
tighten the sprinkler into the sprin-
kler fitting.
3. Wrench tighten the Sprinkler using
only the Model 1509-1 or Model
1509-3 Sprinkler Wrench (Ref. Fig.
D). The wrenching teeth of the Sprin-
kler Wrench are to be applied to the
sprinkler wrenching notch areas
(Ref. Fig. A).
4
After the installation is complete,
make certain that the Institutional
Escutcheon is held fast to the
mounting surface and that it sits
squarely against the ceiling around
its entire perimeter.
SPRINKLER WRENCHES
CARE AND MAINTENANCE
The 5.6 K-Factor, Model G100 Sprin-
klers must be maintained and serviced
in accordance with the following in-
structions:
Service inspections should be made
on a regular basis to detect possible
damage or alterations to the sprinkler
and escutcheon. Inspections should
include making certain that the Insti-
tutional Escutcheon is held fast to the
mounting surface. Damaged or al-
tered sprinklers are to be replaced im-
Model 1752
mediately to avoid personal injury
and to prevent use for causing per-
sonal injury, as well as to maintain
the sprinkler system in an operative
condition.
Before closing a fire protection system
main control valve for maintenance
work on the fire protection system
which it controls, permission to shut
down the affected fire protection sys-
tems must be obtained from the
proper authorities and all personnel
who may be affected by this action
must be notified.
Sprinklers which are found to be leak-
ing or exhibiting visible signs of corro-
sion must be replaced.
Automatic sprinklers must never be
shipped or stored where their tempera-
tures will exceed 100°F/38°C and they
must never be painted, plated, coated,
or otherwise altered after leaving the
factory. Modified or over-heated sprin-
klers must be replaced.
Care must be exercised to avoid dam-
age to the sprinklers - before, during,
and after installation. Sprinklers dam-
aged by dropping, striking, wrench
twist/slippage, or the like, must be re-
placed.
Also, replace any sprinkler
that has a cracked bulb or that has lost
liquid from its bulb (ref. Installation
Section).
The owner is responsible for the in-
spection, testing, and maintenance of
Close
FIGURE D
NOTES

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