Elkhart Brass 299-20XHC-N7/4 Monitor - Manual (Page 8)

Revised 8/20/2010 8 EB98175000_Rev. B
OPERATING INSTRUCTIONS
5.0 Monitor control function operation
5.1 Manual control operation:
“SYSTEM ON” push button switch will turn on power to all control circuits and can be
activated at any control box. This will enable all monitor controls.
“SYSTEM STANDBY” push button switch will disconnect power from all monitor functions at
any control panel.
Water valve “OPEN” & “CLOSE” push button switches are momentary contact switches
that operate a latching relay in Valve & Pump Box. Control power has to be on for either one of
these functions to switch. If power is lost on monitor, valve will maintain last position set.
Monitor “LEFT” & “RIGHT” switch controls horizontal position of monitor & nozzle. Hold
switch in direction desired, until nozzle discharge position is reached. Then release switch to stop
movement.
Monitor “UP” & “DOWN” switch controls vertical movement of monitor & nozzle. Hold
switch in direction of vertical movement required, until nozzle discharge position is reached, then
release switch to stop.
Nozzle “STRT” & “FOG” switch controls stream pattern of nozzle and will adjust from straight
stream to wide fog. Tip movement can be stopped at any position by releasing switch.
Note: On NEMA #4X control boxes “UP”, “DOWN”, “LEFT”, & “RIGHT” functions are
combined into one switch (4 way joystick switch).
5.2 Monitor control panel pilot light operation:
“POWER ON” pilot light is located on each control panel. This indicates 24 Volts D.C. control
power is available at each Valve & Pump Box.
WATER VALVE “OPEN” pilot light indicates that water valve relay located in the Valve &
Pump Box is switched to the “open” position.
Horizontal “OSCILLATION” switch (Optional) controls Horizontal Oscillation mode,
automatic or manual.
5.3 Automatic Horizontal Oscillation Operation (Optional)
Horizontal sweep switch will activate either automatic or manual horizontal sweep. The
position of switch will be indicated by pilot lights on control box, either “manual” or
“Automatic”. When in “AUTO” mode, monitor will automatically oscillate horizontal
movement within the perimeters of the limit switches that are mounted on the horizontal
actuator. Loosening set screws on reed switch brackets and moving them along cylinder until
desired oscillation pattern is reached can change these perimeters. Then tighten set screws to
lock switch into place (see illustration 7).
Horizontal Actuator with Limit Switches Installed
(Illustration 7)