5
An automatic drain empties water from a low point in the monitor piping to prevent freezing and help empty hose lines. The valve is
designed to close automatically when pressure in the monitor exceeds approximately 5 psi and open again when the pressure drops
to that point. When the automatic drain is not desirable it may be disabled. To disable the drain valve refer to the exploded view on page
15 and follow the steps below:
1) Unscrew the drain assembly (40, 41, 42, & 43) and remove the screw and washer (42 & 43)
2) Flip over the rubber drain valve (41) so that the raised edge is against the face of the housing (40).
3) Reassemble.
3.6 AUTOMATIC DRAIN
3.7 TRUCK MOUNT BASE
The CROSSFIRE® monitor may be used from a truck by using a truck mount adapter. The truck mount adapter can be bolted to a three
inch riser pipe with a three inch 150 lb. ASA companion flange and gasket using four 5/8" bolts. It can also be screwed directly on a 3"
NPT thread. Use of pipe thread sealant is recommended. The riser must be supported to safely withstand a nozzle reaction force of up
to 900 lbs (1250 GPM at 175 PSI). Make sure that no interference exists between the monitor and other deck mounted equipment in any
direction.
A drain valve should be provided in the riser pipe which supplies the monitor. The riser should be drained immediately after each use
during cold weather to prevent freezing and possible damage. The monitor has an automatic drain. If this drain has been disabled (see
section 3.6), the monitor must be drained by lowering the nozzle below horizontal. Installation instructions are supplied with the truck
mount base.
3.8 TRUCK MOUNTING OF THE PORTABLE BASE
In some cases a user may not have a riser directly off of the pump that can be used for mounting the monitor. In this case it may be
desirable to supply the monitor with hose lines connected to the side discharge of the pumper. In these circumstances it is
recommended that the user purchase a Deck Mount Plate, TFT part XF400-KIT, from the manufacturer. Please call 1-800-348-2686 for
further information and advice concerning mounting alternatives. Installation instructions are shipped with this accessory. The storage
bracket, TFT part XF-B, for the base unit IS NOT STRONG ENOUGH to withstand the forces encountered with an operating monitor
and is not intended for this purpose.
3.9 CROSSFIRE® USAGE
Because of the arched trajectory of a fire stream, it is recommended that a spotter be used to accurately direct the stream from the
monitor. Master streams flows are powerful and capable of injury and damage to property. Use great care in directing the stream.
3.10 FLOWS & PRESSURES
The CROSSFIRE®monitor and SAFE-TAK 1250 portable base are designed for maximum flows of 1250 gpm (5000 l/min) and a
maximum pressure of 175 psi (12 bar). Do not exceed these limits. Certain nozzle sizes can exceed these limits.
3.10.1 STACKED TIPS
3.10.2 AUTOMATIC MASTER STREAM NOZZLES
Automatic nozzles maintain a constant pressure by adjusting their opening to match the available flow. Consult the nozzle
manufacturer for maximum flow and pressure ratings. In all cases, do not exceed 1250 gpm (5000 l/min) or 175 psi (12 bar).
NOZZLE
DIAMETER
NOZZLE PRESSURE
150 PSI
1-3/8"
1-1/2"
1-3/4"
2"
80 PSI
500
600
810
1060
240
280
380
500
FLOW
(GPM)
REACTION
(LBS)
175 PSI
730
870
1190
—
520
620
840
—
REACTION
(LBS)
FLOW
(GPM)
680
810
1100
—
440
520
712
—
REACTION
(LBS)
FLOW
(GPM)
100 PSI
560
660
910
1190
300
350
480
630
REACTION
(LBS)
FLOW
(GPM)
50 PSI
397
473
643
840
148
177
240
314
FLOW
(GPM)
REACTION
(LBS)
If the monitor is to be transported on a truck mount base, the horizontal lock should be kept locked to keep the monitor from spinning
on its base. The rotational position can be locked by moving the rotation lock lever to its down position. The nozzle may be supported
by a bracket or pointed straight up.
3.10.3 STREAM STRAIGHTENERS
3.11 TRANSPORTING MONITOR ON TRUCK MOUNT BASE
Stream quality, especially with smooth bore nozzles, is generally improved with a stream straightener because the water must make
many bends passing through a monitor.
