SOLUTIONS
Page 9
Owner’s Manual
Section 4: Detailed Operation
The
Omniguard 4
monitors and records the differential pressure
between the #1 inlet port and the #2 (Reference) inlet port.
In abatement applications the
Omniguard 4
should be located
outside the containment area and not in any antechambers (i.e.
shower or changing room). This allows a supervisor or hygienist to
monitor pressure readings without entering the containment area.
Work Area Setup
The
Omniguard 4
should be placed on a solid (non-vibrating)
surface, excessive vibrations disrupt accurate pressure
measurement, hanging the unit on a wall is okay.
1. The intake end of the pressure tubing must be located a minimum
of 5 feet away from any openings or HEPA fan/filter units.
Choose a location away from excessive dust or moisture.
2. Cut a 1/2” slit in the polyethylene barrier and feed approximately
1 ft. of pressure tubing through it. Tape the tubing securely to the
polyethylene.
3. Connect the free end of the tubing securely over the #1 inlet port.
Be careful not to turn the nozzle.
4. The maximum hose length is limited to 70 ft (for 3/16”ID hose).
Lengths beyond 70 ft can degrade reading accuracy.
5. The Alarm 1 and Alarm 2 settings should be in negative units
when used to monitor a negative containment area. For positive
containment applications, use positive units (Inches WC,
Millimeters WC or Pascals) for alarm setpoints.
NOTE: It is important that there be no kinks or
sharp bends in any part of the tubing. Any blockage
could inhibit accurate recording of the pressure
in the containment area.
Power-Up
To begin operating the
Omniguard 4
, plug the power cord into a
standard wall outlet supplying 115VAC, 60Hz and press the POWER
ON/OFF key. The first time a new unit is turned on the settings will
be at default values.
Initial Power-Up
-- the user is asked to set the unit’s Date & Time
and Alarm 1 & 2 setpoints because they are at the factory
defaults.
This happens only until these settings are updated,
usually only the first time the unit is used.
Normal Power-Up Sequence
-- If the unit was properly turned off
after the previous usage, POWER OFF will print. Otherwise
POWER FAIL will print, indicating that an AC power failure
may have occurred. Either message will be followed by the
date and time the unit was last powered off.
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