5
3.5.1 To provide a 0 to 10vdc analog output signal for remote monitoring of the space
pressurization level place jumper H5/PROCESS in the V position.
3.5.2 To provide a 4 to 20mAdc analog output signal for remote monitoring of the space
pressurization level place jumper H5/PROCESS in the I position.
3.6 Process Output
1) Process Output signal can be changed between voltage or current by positioning H5 jumper
to I or V. The following table gives the jumper position and corresponding output selection.
H5 JUMPER
SELECTION
OUTPUT
SELECTION
I
V
4-20 MA
0-10VDC
TABLE 3.5 OUTPUT SELECTION
4.0 PRE-STARTUP CHECK
(Refer to Figure 1, 2 & 3 For Test Point and Adjustment Locations)
4.1 Equipment Needed
4.1.1 4-1/2 Digit Digital Multi Meter (Fluke Model 8062A Or Equivalent DMM)
4.1.2 Potentiometer Adjustment Tool (Spectrol)
4.2 Pre-Startup Check
4.2.1 With 24VAC power applied to the Guardian, Verify LED displays illuminate.
4.2.2 Monitor TP2 and verify a reading of +5.5 +
.6 vdc.
4.2.3 Monitor TP3 and verify a reading of -4.8 +
.6 vdc.
4.2.4 Monitor TP4 and verify a reading of +15 ∀ .6 vdc.
4.2.5 Monitor TP5 and verify a reading of +2.5 ∀ .1vdc.
4.2.6 Monitor TP6 and verify a reading of -2.5 ∀ .1vdc.
4.2.7 Open access door and connect the positive (+) probe of DMM to TP7 (DPT) and the
common (-) probe to TP1 (GND). Disconnect one side of ROOM and REFERENCE
pneumatic tubing from fittings. Verify a reading of ∀0.005vdc. If out of
specification, adjust ZERO potentiometer (R4) for 0.000vdc +
.001vdc.
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