April 2011
Section 6 Maintenance
Page 6 – 1
Amerex Restaurant Fire Suppression System (EX 4658)
MAINTENANCE
THE AMEREX RESTAURANT FIRE SUPPRESSION SYSTEM MUST BE PROPERLY MAINTAINED AT
INTERVALS NOT EXCEEDING SIX (6) MONTHS IN ORDER TO ASSURE PROPER OPERATION.
MAINTENANCE SHALL BE PERFORMED BY AN AMEREX RESTAURANT FIRE SUPPRESSION
SYSTEMS TRAINED AND CERTIFIED DISTRIBUTOR IN ACCORDANCE WITH NFPA 96, NFPA 17A AND
LOCAL CODE REQUIREMENTS
.
A complete functional test of the system as described in the “Testing and Commissioning” section of this
manual shall be performed at every maintenance interval along with the following:
1.
Prior to performing any maintenance, remove the cover of the MRM or PRM, install the set-up/lock-
out tool and remove the nitrogen actuation cylinder.
2.
Compare the number, type and location of each appliance with the “as-built” drawings or the previous
system service. Note any changes in writing to the owner or the owner’s agent and put a copy of the
notification in the permanent job file.
CHANGES IN THE COOKING LINE WILL HAVE A MAJOR
EFFECT ON THE SYSTEM DESIGN AND PERFORMANCE.
If appliances have been added or
changed the system may have to be redesigned.
3.
Note the condition of the hood and duct, including grease build up and code violations (both local
codes and NFPA 96 and NFPA 17A).
Notify the owner or owner’s agent of any problems or
code violations – in writing with a copy to be placed in the permanent job file
.
4.
Check the entire distribution network piping, nozzles and caps to verify that they have not been
altered or damaged. Perform "puff test" or "air test" in accordance with "Testing and Commissioning"
instructions using a
NITROGEN ACTUATION CARTRIDGE
.
CAUTION:
SOME HOOD AND DUCT CLEANING PROCEDURES MAY DAMAGE THE
DETECTION NETWORK OR LEAVE DETECTORS IN A CONDITION WHERE
THEY MAY NOT OPERATE. AMEREX RECOMMENDS THAT THE SYSTEM BE
SERVICED AFTER EACH CLEANING BY AN AUTHORIZED AMEREX
RESTAURANT SYSTEMS DISTRIBUTOR.
5.
Amerex requires that all fusible links be replaced in intervals not to exceed 6 months.
Links
that do not need replacing must be thoroughly cleaned before being put back into service. Any
fusible link found to be damaged, painted or having excessive grease must be replaced regardless of
age. The links that are removed shall be destroyed. Any link exposed to excessive heat or flame
shall be removed from service and destroyed.
6.
A system using the PRM requires that the tubing be replaced at intervals not to exceed (3) years.
Record the installation date and the date of replacement on the tubing replacement label on the
Detection Accumulator Cylinder. The entire length of tubing must be replaced, either at the three
year interval or following a fire incident. If grease or coating build-up is excessive, a more frequent
replacement interval will be required. At a minimum, excessive build-up is defined as when material
completely encircles the tube at
any
point along its length. Cleaning the tube is acceptable, provided
that no abrasives are used, and that the text on the outside of the tubing is still legible when
completed.
Use only a soft cloth with mild detergents and warm water. If the tubing appears
brittle or charred REPLACE it. “When in Doubt, Take it OUT”. Corrective action should be
taken to re-evaluate the environment where the tubing is installed, or a more frequent tubing
inspection and/or replacement interval must be used.
The End of Line Fitting Assembly (P/N
16506) must be replaced when the tubing is replaced. Do not attempt to re-use the Fitting or the
Sealing Ball. Thoroughly leak check the tubing terminations following re-installation and re-
pressurization.
