MOUNTING TO EXISTING CHECKFIRE MP BRACKET
In some cases, retrofitting to an existing CHECKFIRE SC system
may be an option. To accomplish this, use retrofit bracket, Part No.
423531. This bracket can be mounted directly to the existing SC
bracket. See Figure 21.
NUTS AND BOLTS INCLUDED
WITH RETROFIT BRACKET
FIGURE 21
002763
MANUAL ACTUATOR INSTALLATION
Mounting
1. Remove jam nut from lower threads of actuator and slide
actuator through hole in mounting bracket.
NOTICE
Use washer, Part No. 416794, below
bracket only.
2. Reinstall jam nut and tighten firmly (see Figure 22).
3. Install ring pin but do not attach seal at this time.
FIGURE 22
003917
Installing The Fire Suppression System Actuation Line
Install 1/4 in. actuation hose from outlet on actuator to pneumatic
actuator on fire suppression system using a check valve at the
intersection of each actuation device branch. (See Figure 23.)
The CHECKFIRE MP-N System output (using LT-10-R cartridge)
can pressurize up to 75 lineal ft (22.8 m) of 1/4 in. actuation line
with up to eight agent tanks and/or accessories. Check valves are
used to protect against pressure loss if one or more actuator
cartridges are removed or damaged; and by isolating each branch
line, they reduce the overall lineal length of actuation line.
The fire suppression system could be accidentally actuated
causing the release of agent if the gas motor or LT-10-R
cartridge is installed at this time. Do not install these components
until the appropriate installation step is reached.
FIGURE 23
003901
!
CAUTION
INSTALLATION
2012-MAY-18 REV. 02 PAGE 13
CHECKFIRE MP-N Electric
Detection and Actuation System Manual
AUTOMATIC
ACTUATOR
ACTUATION
LINE
MANUAL
ACTUATOR
DETECTION
AND
ACTUATION
SYSTEM
MSHA
APPROVED
PRESSURE
SWITCH
(SUPPLIED BY
OTHERS) OR
PNEUMATIC
SHUTDOWN
DEVICE
RELIEF
VALVE
CHECK
VALVE
FIRE
SUPPRESSION
SYSTEM
