TM 10-4510-209-13&P
0057 00
ADJUST
Adjust Pressure Switch
WARNING
ELECTRICITY CAN KILL YOU. The latrine is a wet environment capable of poising an
electrical shock hazard when personnel have direct contact with energized wires or metal
parts. Electricity is unlike most hazards; its effect is immediate. Failure to use extreme
caution may result in serious injury or death to personnel.
1. Monitor the water pump pressure gauge (1) through a complete pumping cycle. The water pump (2)
should come ON at approximately 20 psi and shut OFF at approximately 32 psi.
2. Remove the screws retaining the pump cover (3), and remove the cover.
3. Remove the cover (4) from the pressure switch (5).
4. Locate the cut-in (6) and cut-out (7) adjusting screws.
5. To adjust the pressure that the pump turns ON, turn the cut-in adjusting screw (6) clockwise to
increase the setting, counterclockwise to decrease.
6. To adjust the pressure that the pump turns OFF, turn the cut-out adjusting screw (7) clockwise to
increase the setting, counterclockwise to decrease.
7. Monitor the operation of the pump throughout a complete pumping cycle.
8. Repeat this procedure as often as necessary to adjust the operating pressures to approximately 20
psi cut-in and 32 psi cut-out.
9. Install the cover (4) on the pressure switch (5).
10. Install the pump cover (4), and retain with screws.
4
3
1
5
0057 00-13
