Elkhart Brass ELKHART 299-11 EL (10,15,20FT) - Manual (Page 2)

2 of 2 98463000 REV-D
****IMPORTANT****
DO NOT exceed the following maximum allowable flow rates at 100 PSI nozzle pressure:
Monitor
Heights
Max. Flow at
100 PSI NP
Maximum Pressure
At Base Flange
Calculated Deflection of
Nozzle at Maximum Flow
10 Ft. 750 GPM 127 PSI 1.05 inches
15 Ft. 750 GPM 134 PSI 4.34 inches
20 Ft. 750 GPM 143 PSI 11.33 inches
Pressure and flow characteristics of water supply must be determined prior to monitor installation,
and a restricting device, such as an orifice plate, installed between flanges to limit flow and pressure
to appropriate values as indicated above.
Operation:
Horizontal and Vertical locks: The monitor should always be locked in position when it is to
be left unmanned. The horizontal travel is locked and unlocked using a friction lock operated by
hand wheel assembly (Item 14). Turn the hand wheel assembly clockwise to lock the monitors
horizontal travel and counterclockwise to unlock it. The vertical travel can be locked in position
using the friction lock on the right hand side of the control arm. To lock the monitors vertical
travel turn the lock clockwise using the handle shaft with the knob on the end (Items 1 & 2).
Turn the lock counterclockwise to unlock the vertical travel of the monitor. Always make sure
both locks are engaged before flowing water.
Controlling Horizontal and Vertical movement: The monitor movement is controlled using
the hand grip (Item 16) located on the end of the control arm assembly. Firmly grasp the hand
grip with one hand and release the vertical and horizontal locks with the other. Only release the
locks enough to allow movement in all directions. Pushing down on the hand grip will raise the
discharge of the monitor and lifting will lower the discharge. Pushing the hand grip to the left
will move the discharge of the monitor to the right and pushing the hand grip to the right will
move the discharge of the monitor to the left. Do not release the monitor controls without
engaging both the horizontal and vertical locks first.
Familiarize all personnel that will be using this equipment with the operation of all the monitor’s
locks and controls before flowing water. The water supply to the monitor should be increased
slowly to prevent whipping of the monitor due to nozzle reaction.
Maintenance:
The monitor should be moved through its entire range of motion and inspected for proper
function of all locks and controls monthly. The monitor should be greased through the two
fittings located on the monitor assembly (Item 15) every six months. General purpose petroleum
grease should be used. Maintain paint as dictated by the environment.