Elkhart Brass Scorpion 7400 EXM Monitor - Manual (Page 28)

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MAINTENANCE INSTRUCTIONS
Preventive Maintenance
The complete monitor and control system should be inspected during each apparatus check. Careful
inspection for damage to the monitor, valve or nozzle is especially important after use of the
monitor in emergency operations.
 Operate all possible functions to ensure that each works normally
 Flow water to check the nozzle pattern
o If the pattern is disrupted, clear the debris
o If the obstruction still remains, remove the nozzle and check for debris lodged between the
nozzle stem and body
 During nozzle flow test, inspect monitor swivel joints and water valve for leaks
 Inspect all exposed wiring for signs of damage
 If a Docking Station is used in the EXM system, use a clean cloth to wipe clean the brass contacts
on both the Docking Station and any Handheld controllers used with the station.
Note: Although grease fittings are provided for the up-down and left-right gear cases, routine
greasing should not be necessary. If the monitor is exposed to high level of radiant heat for a
prolonged period, it may be possible for the factory grease to thin and run out of the gear cases. In
such an event, fresh grease should be applied. It is recommended that Mobilith AW2 grease be used
to lubricate the monitor gearing.
Caution:
DO NOT use high pressure spray to clean the EXM System. Using high
pressure spray can damage seals and lead to serious damage of electrical components.
Understanding System LEDs
 Monitor Controller LEDs
o When the monitor is first powered up all LEDs turn on for approximately 1 second, then only
the Power LED remains illuminated
o When the monitor control box receives a right or left command, the horizontal LED
illuminates.
o When the monitor control box receives an up or down command, the vertical LED illuminates.
o When the monitor control box receives a fog or stream command, the nozzle LED illuminates.
o At this time no function illuminates the auxiliary LED on the monitor control box.
o When in Setup Mode, the blue status LED on the monitor control box will illuminate, and
depending on motor speeds, the horizontal, vertical, and nozzle LEDs may or may not be lit.
 Input Controller LEDs
o LEDs flashing above both the open & close buttons indicate that the valve needs to be
calibrated.
o The open LED will flash while the valve is opening whether in auto-travel mode or while
holding the OPEN button. The OPEN button LED will stay lit while the valve is in the open
position unless the user brings the system into Setup or Programming Modes.