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OPERATING PROCEDURES - TM-5-4210-229-14P_97
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TM-5-4210-229-14P Truck Firefiighting 1000 GPM Multipurpose Model 2500L Manual
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AFFF VESSEL RECHARGE PROCEDURES
TM5-4210-229-14&P 2-20.  OPERATION OF REMOTE TURRET. a.   Activate the system by using the remote turret pressure activator switch (9,  figure 2-2). b.  Activate turret solenoids by using the twin agent solenoid activator switch (7,  figure 2-2). c.  The regulator pressure gauge (6,  figure 2-2) indicates regulated pressure in the dry chemical and AFFF tanks. d.  Remove control handle retaining pin (5,  figure 2-2) and pull twin agent control handle (4) down.  Nozzle spray pattern is controlled by the AFFF turret nozzle shaper (12,  figure 2-2).  Placing the control fully forward emits a dispersed pattern,  while placing the control all the way back emits a straight stream. e.  To operate the turret,  select the agent required by using the AFFF/Dry Chemical selector switch (10, figure 2-2) and press the twin agent activating button (2) on the end of the twin agent control handle (4).  The dis- charge of the selected agent will continue as long as the twin agent activating button (2) is pushed in.  Releas- ing the switch will stop the discharge agent.  To control the shape of the AFFF agent discharge, place shaper control handle (12,  figure 2-2) fully forward for a dispersed pattern or all the way back for a straight flow. f.  If an agent change is required,  all turret discharge should be halted before the AFFF/Dry Chemical selector switch (10) is used. 2-21.  OPERATION OF REAR HANDLINE. a.    Activate  the  system  by  using  the  twin  agent  pressure  activator  switch  (2,    figure  2-1)  or  manual  twin  agent pressure activator handline (3). b.  Release hand brake and unwind hose from the hose reel. c.    The  regulator  pressure  gauge  (4,    figure  2-1)  and  test  gauges  (6)  indicate  the  regulated  pressure  in  the  dry chemical and AFFF tanks. d.  Open either or both dual agent handline control handles (22,  figure 2-1). 2-22.  POST OPERATIONAL PROCEDURES. a.   Immediately upon return from a firefighting mission,  service and check the truck. b.   Determine if any physical damage has occurred to the truck or components/accessories during the mission. 2-23.  SYSTEM SHUT-DOWN AFTER OPERATION PROCEDURES. NOTE If all cylinder pressure has been spent it is necessary to manually close the turret op- erating  valves  using  the  manual  override control levers (8,  figure 2-2). a.  CLOSE the AFFF emergency shut-off valve (9,  figure 2-1)  and  the  dry  chemical  emergency  shut-off  valve (13). b.  OPEN the purge valves (16 and 17,  figure 2-1). c.  OPEN dual agent handline control valves (22,  figure 2-1) until only nitrogen discharges. 2-72

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