REV03016703010220
17
Commissioning/Initial Start-Up
Gauge Venting
After shipment, gauge pointers may not rest at zero due to internal case pressure build-up, which is caused by
temperature and/or pressure variations. As a result, their accuracies may be significantly reduced. To restore the gauges
to operating condition, move the yellow lever of the fill plug to the open position or remove the black rubber piece from top
of gauge and leave it open to vent.
Switch Adjustments
Note: Please contact AXI International before adjusting either the vacuum or the pressure switch to avoid voiding the
system’s warranty.
Vacuum and Pressure Switches
When the value exceeds the set point of the switches’ rating, the switch will change state. Ensure you are working with a
normally closed position (leads on opposite sides of the switch – across from one another are connected to the wire
spades). If the set point is incorrect, adjustments can be performed in the field as follows:
1.
Remove the two wires connected to the normally closed spades on the top of switch.
2.
Pop off the “Rubber Plug” in between the spades on top of the switch.
3.
Insert a 5/64” Allen Wrench/Key into the slot.
4.
For a vacuum switch, adjust the Wrench/Key
¼
-
½
turn at a time CCW to increase the vacuum alarm’s set point.
5.
For a pressure switch, adjust the Wrench/Key
¼
-
½
turn at a time CW to increase the pressure alarm’s set point.
6.
After adjusting the settings, perform the testing procedure(s) for the switch(es) as outlined in the commissioning
section.
Flow Switch
When the flow rate drops below the predetermined set point on the flow switch (i.e. 10 GPM), the switch will trigger a
signal to shut down the pump. If the set point is incorrect, an adjustment can be performed in the field as follows:
1.
Loosen the lock screw on the stem of the flow switch using the provided Hex Allen Key
2.
Rotate the setting dial on the flow switch until the desired GPM flow range printed on the stem is reached.
a.
If the Orange LED light on the Flow Switch’s M12 Connector is not illuminated, a flow rate lower than its
set point is being detected.
b.
Turn the black neck of the Flow Switch CW. Once the point is reached where the Orange LED light turns
on, turn the dial one more full turn CW.
3.
Tighten the lock screw to secure the setting dial’s placement
4.
After adjustment, ensure to perform the relevant testing procedure outlined below
Note: For information on factory set points or timer delays please refer to the “Accessories and Additional Configuration
Parameters” subsection in the “Technical Assistance and Ordering” section.
Internal Pressure Relief Adjustment
Note: Please consult AXI International before performing any internal pressure relief settings to avoid warranty issues
The pump used on the STS systems come from the factory with a pre-set internal pressure relief bypass. If the pressure
on the discharge of the pump rises past this set point, the internal bypass will open and recirculate the fuel in the head of
the pump to protect the itself and any downstream components. When this happens, the discharge branch of the system
will not see the proper fuel flow, most likely causing the system to fail on a low flow alarm.
Summary of Contents for STS 6003
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