REV03016704010220
18
By adjusting this Internal Pressure Relief to a point past the set point on the Pressure Switch, the system will fail on a
High-Pressure condition before the relief begins to open, allowing fuel to flow fully while within the acceptable pressure
range. The desired set point for pump Internal Relief Valve is around 48-50 PSI, which is higher than the pressure switch
setting, and lower than the operational pressure limit on the system fine filter.
Tightening the Bypass Spring:
1.
To tighten the spring in the pump head, remove the blue cover nut located on the left side of the pump head
2.
Loosen the secondary nut to allow for screw adjustment
3.
Using a flathead screwdriver, tighten the screw two full turns (clockwise)
4.
Restore the secondary nut and blue cover, tightening them down to their original positions
Initial Test Procedures
With breakers and power turned on, and pump running, check all alarms for proper operation:
•
Leak Detection
- Manually raise the float switch located at the bottom of the leak-basin. The pump should
immediately turn off and the “Leak Detection” alarm should be indicated on the System Controller. Reset the
alarm by lowering the float switch and pushing or selecting the Alarm Reset button on the enclosure door panel.
•
High Vacuum Alarm
- Slowly, partially close the inlet ball valve. At 16” HG, the pump should turn off and “PLS
SERVICE PRIM. FILTER…” or “High Vacuum” alarm should be indicated on the System Controller. Open the
inlet ball valve again. Reset the alarm by pushing the Alarm Reset button on the enclosure door panel.
•
High Pressure Alarm
- Slowly, partially close the outlet ball valve. At 22 PSI, the pump should turn off (after a
delay of about 1 second) and “PLS SERVICE SEC. FILTER…” or “High Pressure” alarm should be indicated on
the System Controller. Open the outlet ball valve again. Reset the alarm by pushing the Alarm Reset button on
the enclosure door panel.
•
Water Sensor
- Jump the Water Detection Sensor Probes by placing a conductor across the two horizontal
contacts. The pump should turn off after 10 seconds and “High Water Alarm” or “PLS. DRAIN WATER/BOWL…”
should be indicated on the System Controller. Remove the metal and reset the alarm by pushing the Alarm Reset
button on the enclosure door panel.
Note: Systems with the Auto Water Drain (AWD) functionality have two sets of water sensing probes on the primary filter
bowl. Please refer to the AWD section on for additional information.
•
No Flow Alarm
– Ensure orange light indicator turns on when the system pump is on (moving fluid) and off when
the system is not running. Disconnect the M12 connection on the back of the flow switch. The pump should turn
off and the “No Flow Alarm” or “PLEASE PRIME SYSTEM / CHECK FLOW” should be indicated on the System
Controller up to 15 seconds after disconnection. Use Flow Switch Setting & Adjustment instructions to return the
switch to the proper setting. Reset the alarm by pushing the Alarm Reset button on the enclosure door panel.
•
Auto Water Drain Float Switch (
If Applicable
)
- Manually raise the “HIGH” float switch located on the Auto
Water Drain’s Water Collection Drum. An alarm should be indicated on the System Controller. Reset the alarm by
pushing the Alarm Reset button on the enclosure door panel.
•
Tank Overflow (
If Applicable
)
– Manually raise the “HIGH” float switch located on each of the connected tanks.
The pump should immediately turn off and the “Tank Overflow” alarm should be indicated on the System
Controller. Reset the alarm by pushing the Alarm Reset button on the enclosure door panel.
Note: If any of the above described alarm test procedures fail or if any alarm trip value deviates, immediately contact AXI
International.
Содержание STS 6003
Страница 2: ...REV03016703010220 1...
