MECHANICAL RELEASE MODULE II (MRM II)
P/N 18000:
MRM II with Red-painted Steel Enclosure
P/N 18001:
MRM II with Stainless Steel Enclosure
The new MRM II combines the same features and
functionality as the original MRM along with increased
detection capabilities and a far simpler means of
setting the detection cable tension. The MRM II is
available in the above configurations, now pre-
installed in its own enclosure.
The method of setting the detection cable tension on
the
MRM II
does not require the use of any tools (once
the cable is locked down into the large, knurled wind-
up spool). A large lever to the right of the spool is
used to increase the cable tension. Alignment of the
bottom edge of the lever with markings on a label on
the mounting plate indicates when the proper tension
has been achieved. In addition to being easier to set
up, lowering cable tension to change out detection
links is now also much simpler. The enclosure is 10”
Wide x 5” Deep x 11 ¾” High.
MECHANICAL RELEASE MODULE II - (P/N 11977)
WITHOUT AN ENCLOSURE
NOTE:
This version of the MRM II is a direct replacement for
the old style MRM. It carries the same part number as the
original MRM.
The Mechanical Release Module II is used to actuate the agent
cylinder discharge valve either automatically or manually by
puncturing a nitrogen cylinder.
Automatic release of agent is accomplished when a fusible link
detector separates during a fire condition. This causes a spring-
loaded plunger to perforate the rupture disc and releases nitrogen
through the actuation hose/piping network to the agent cylinder
discharge valve(s).
Manual release of agent is accomplished by pulling on a manual
pull station which is connected to the Mechanical Release Module
II by a cable.
The Mechanical Release Module II is equipped with two
snap
action switches, one (P/N 12524)
for electrical signaling, power
shutdown and other auxiliary functions and a second (P/N 18312)
alarm initiating snap action switch for connection to a fire alarm
panel. An additional two snap action switches may be added.
Operation of one or two mechanical gas valves may be
accomplished by adding a
Gas Trip Assembly (P/N 12740)
.
December 2008
Section 2 System Components
Page 2 – 4
Amerex Restaurant Fire Suppression System (EX 4658)
The cable for the gas valves, manual pull stations and detection network
may be attached to the MRM II from ether of two sides (top or bottom).
MRM II
Gas Trip Asy - 12740
