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Sprinkler 87 d
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 ap-
propriate National Fire Protection Asso-
ciation Pamphlet that describes care
and maintenance of sprinkler systems.
In addition, the Authority Having Juris-
diction may have additional mainte-
nance requirements which must be fol-
lowed.
A. The sprinklers must be inspected on
a regular basis for corrosion, me-
chanical damage, obstructions,
paint, etc. The frequency of the in-
spections may vary due to corrosive
atmospheres, water supplies, and
activity around the device.
B. Sprinklers or cover plate assemblies
that have been field painted or me-
chanically damaged must be re-
plac ed immed ia te ly. Sprinklers
showing signs of corrosion shall be
tested and/or replaced immediately
as required. Installation standards
require sprinklers to be tested and, if
necessary, replaced immediately af-
ter a specified term of service. For
Viking Extended Coverage Horizon
®
Mirage
Concealed sprinklers, refer
to the Installation Standards and the
Authority Having Jurisdiction for the
specified period of time after which
testing and/or replacement is re-
quired. Sprinklers and cover plate
assemblies that have operated can-
not be reassembled or re-used, but
must be replaced. When replace-
Replaces page 87 a-d, dated August 11, 1997.
(Replaced Identification Stripe with Stripe or Dot)
TECHNICAL DATA
ment is necessary, use only new
sprinklers and cover plate assem-
blies.
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 affected area.
1: Remove the system from service,
drain all water, and relieve all
pressure on the piping.
2: Remove the cover plate assembly.
a. From below the ceiling, grasp
the cover plate and gently turn
it counterclockwise.
3: Place a plastic protective shell
(from the spare sprinkler cabinet)
over the sprinkler to be removed.
The internal diameter of the spe-
®
®
cial Horizon
Mirage
Sprinkler installation wrenches
are designed for use with the
sprinkler contained in the shell.
4: Remove the sprinkler from the
piping in which it is installed.
a. Using one of the special sprink-
ler wrenches, turn the unit
HORIZON
EXTENDED COVERAGE
20 Ft X 20 Ft (6.1 M X 6.1 M)
CONCEALED SPRINKLER
5: Install the new unit. Care must be
taken to replace the sprinkler
with the proper model, style,
orifice size, temperature rating
and response characteristics.
A fully stocked spare sprinkler
cabinet should be provided for
this purpose.
Use of the correct Horizon
rage
be verified by checking the fusible
link for the following identification
scheme:
Standard Response:..... No Stripe or
Dot
Quick Response:.... Purple Stripe or
Dot
EC & QREC:............Yellow Stripe or
Dot
Follow instructions provided in
"INSTALLATION" paragraph 7.
6: Place the system back in service
and secure all valves. Check the
replaced sprinklers and repair all
leaks.
F. Sprinkler systems that have been
subjected to a fire must be returned to
service as soon as possible. The en-
tire system must be inspected for
damage and repaired or replaced as
®
Concealed
necessary. Sprinklers that have
been exposed to corrosive products
of combustion or high ambient tem-
peratures, but have not operated,
should be replaced. Refer to the
Authority Having Jurisdiction for mini-
mum replacement requirements.
April 13, 1998
®
®
MIRAGE
counterclockwise to remove
the old sprinkler.
®
®
Concealed Sprinkler can
Form No. F_061593
Mi-
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