©Copyright Task Force Tips LLC 2014-2018
19
LIZ-060 October 26, 2020 Rev03
5.3 DRAINING RESIDUAL WATER
The automatic water drain valve allows the monitor and Booster body to drain after the upstream water supply is shut off, even with the
swing-check valve closed. This minimizes susceptibility to damage from corrosion and freezing water. The drain valve seal membrane is
designed to close automatically when pressure exceeds 5 psi. When pressure drops below 5 psi, the seal membrane will open to allow
drainage. Proper function must be verified prior to fireground use.
To fully drain the Side A Inlet of the Booster, the upstream device to which it is mounted must also be drained. The TFT Hydrant Under
Monitor and Industrial Valve Under Monitor include additional automatic drain valves that serve this purpose.
Figure 5.3
5.4 ADJUSTING SWEEP ANGLE
Oscillating sweep angle can be adjusted from zero to 120 degrees in 10 degree increments at any time while oscillating or stationary,
without removing the safety guard that encloses the oscillating mechanism. From the 0° OFF setting (screw head showing through
safety guard), turning clockwise allows angles of 20°, 40°, 60°, 80°, 100° or 120°. Turning counter-clockwise allows angles of 30°, 50°,
70°, 90°, or 110°. DO NOT REMOVE THE SAFETY GUARD WHILE FLOWING. A padlock can be attached to the safety guard to
prevent removal.
To adjust the sweep angle:
1. Pull the pin on the bottom of the gearbox and pivot the monitor by hand
clockwise or counter-clockwise. IF RESISTANCE IS FELT, DO NOT ATTEMPT
TO FORCE THE MONITOR BEYOND THAT POINT.
2. To reach a setting beyond the toggle point:
A. Without flowing: use a ½” wrench to manually rotate the external OSC drive
hex shaft and then pivot the monitor by hand.
B. When flowing: Continue to gently push the monitor against the toggle point.
As the oscillating mechanism continues to rotate, it will eventually allow the
angle adjustment disc to reach the desired setting.
3. When desired setting is reached, release pull pin and adjust the monitor slightly
until pull pin snaps into place.
4. Center the sweep pattern on the target using the horizontal adjustment (IE: tiller,
handwheel or crank) on the monitor.
5. The sweep angle range, centering, and discharge elevation can be verified “dry”
(without flowing water) by rotating the external OSC drive hex shaft throughout
the complete sweep range. Final verification is made by operating under actual
flowing conditions.
To make a fine adjustment of 10° wider or narrower than the current setting, it is necessary to reach an adjustment on the opposite side
of the adjustment disc. To avoid the nozzle stream striking objects away from the intended target, it is always safest to reduce the angle
towards the 0° OFF position, then increase the angle towards the desired setting.
WARNING
Monitors, valves, and piping may be damaged if frozen while containing sufficient amounts of
water. Such damage may be difficult to detect visually and can lead to possible damage, injury, or
death. Equipment that may be exposed to freezing conditions must be drained immediately
following use to prevent damage.
CAUTION
Structural damage from corrosion can result from failure to drain appliance between uses. Damage
from corrosion can cause injury due to equipment failure. Always drain appliance between uses.
Automatic water
drain valve
Port to automatic
water drain valve
Swing check valve
(clapper)
Side A Inlet
must be drained
through upstream device
Lockout
Figure 5.4
