shipment
and installation, and to
make certain the unit has been prop-
erly tightened. If a thread leak should
occur, normally the unit must be re-
moved, new pipe joint compound or
tape applied, and reinstalled. This is
due to the fact that when the joint seal
leaks, the sealing compound is
washed out of the joint. Air testing the
sprinkler piping prior to testing with
water may be considered in areas
where leakage during testing must be
prevented. Refer to the appropriate
technical data and the Authority Hav-
ing Jurisdiction prior to air testing the
sprinkler piping.
F. Wet pipe systems supplying Dry Up-
right Sprinklers must be provided with
adequate heat. Refer to appropriate
installation standards.
8. MAINTENANCE
NOTICE: The owner is responsible for
maintaining the fire protection system
and devices in proper operating condi-
tion. For minimum maintenance and in-
spection requirements, refer to the Na-
tional Fire Protection Association Pam-
phlet that describes care and mainte-
nance of sprinkler systems. In addition,
the "Authority Having Jurisdiction" may
have additional maintenance, testing,
and inspection requirements which must
be followed.
A. The sprinklers must be inspected on
a regular basis for signs of corrosion,
mechanical damage, obstructions,
paint, etc. The frequency of the in-
spections may vary due to corrosive
atmospheres, water supplies and ac-
tivity around the device.
B. Sprinklers that have been field
painted, caulked, or mechanically
damaged must be replaced immedi-
ately. Sprinklers showing signs of
corrosion shall be tested and/or re-
placed immediately as required.
Quick Response Dry Upright Sprin-
klers that are 20 years old shall be
tested and/or replaced immediately
as required. Never attempt to repair
or reassemble a Dry Upright Sprin-
kler. Sprinklers that have operated
cannot be reassembled or re-used,
but must be replaced. When replac-
ing sprinklers, use only new sprin-
klers.
C. The sprinkler discharge pattern is
critical for proper fire protection.
Nothing should be hung from, at-
tached to, or otherwise obstruct the
discharge pattern. All obstructions
must be immediately removed or, if
necessary, additional sprinklers in-
stalled.
D. When replacing existing sprinklers,
the system must be removed from
service. Refer to the appropriate sys-
tem description and/or valve instruc-
tions. Prior to removing the system
from service, notify all Authorities
Having Jurisdiction. Consideration
should be given to employment of a
fire patrol in the effected area.
1. Remove the system from service,
draining all water and relieving all
pressure on the piping.
2. Using the special sprinkler wrench,
remove the old sprinkler and in-
stall the new unit. Care must be
taken to replace the sprinkler with
the proper model, style, "B" di-
mension, orifice size, and tem-
perature rating.
3. Place the system back in service
and secure all valves. Check and
repair all leaks.
E. Sprinkler systems that have been
subjected to fire must be returned to
service as soon as possible. The entire
system must be inspected for damage
and repaired or replaced as necessary.
Sprinklers that have been exposed to
corrosive products of combustion or high
ambient temperatures, but have not op-
erated, should be replaced. Refer to
the Authority Having Jurisdiction for
minimum replacement requirements.
Sprinkler 107 c
TECHNICAL DATA
March 21, 1996
1-5/8"
(41,3mm)
Ceiling
A minimum 1-1/2" (38,1mm)
diameter hole is required to
install sprinkler from below
ceiling.
Outside diameter: 1-5/16"
(33,4mm).
Outside diameter is the same
outside diameter as 1" (25mm)
schedule 40 pipe.
FOR "B"
1: Determine distance
from face of tee to
top of sprinkler
deflector.
2: Round to nearest
1/2" (12,7mm)
increment between
4-1/2" (114,3mm)
and 49-1/2"
(1257,3mm).
FIGURE 1
QUICK RESPONSE
MODEL M DRY UPRIGHT SPRINKLER
13/16"
(20,5mm)
Escutcheon
3-1/16"
(77,8mm)
R
MODEL M
QUICK RESPONSE
DRY UPRIGHT
SPRINKLER
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