PIB-05
18 Feb 2015
PRODUCT INFORMATION BULLETIN
Suction Loading Station
1-3
TROUBLESHOOTING
This troubleshooting guide to assist in locating the
root cause of a failure or performance issue with the
Suction Loading Station. If following these steps does
not resolve your issue, contact Mega Product
Support immediately at: US Toll free: 1-800-345-8889
or Direct: 1-505-345-2661
1. Inspect the hose ‘Foot’ (the check valve attached
to the immersed end of the hose sections) for:
•
Clean screen. If screen is plugged, clean as
required.
•
Check valve proper operation. If check valve does
not hold water. Repair or replace as required.
•
Placement in holding pond. If the Foot valve has
settled into the sand or silt on the bottom of the
pond, the ability for the valve to pass water is
greatly diminished, reducing the volume of water
it can lift. Correct condition as required.
The Foot Valve is required in order to ensure that
water remains in suction hoses during priming.
2. Inspect for air leaks in the inlet hose assemblies.
•
Each connector has a gasket, ensure the gaskets
are serviceable and intact. Inspect each connector
for damage that may allow air to be pulled into
pump inlet.
•
Ensure Foot valve is fully submerged in water at
least 20 inches (0.5 meters).
•
Inspect suction hose assemblies for damage
including collapse, dry rot, cracking, punctures, or
holes, and kinks and obstructions. Replace as
required.
3. Inspect water pump check valve for wear,
condition and damage. The “Clack” and gasket
must be intact for volute to hold water while
priming. Replace as required.
4. Inspect and ensure water pump volute case and
hoses are full of water. Correct as required.
5. Inspect water pump shaft mechanical seal for
leaks or damage. Repair or replace as required.
The performance of the Suction Loading Station
diminishes with lifting height, discharge height, and
altitude as follows:
•
The higher in elevation the unit is operating, the
lower the flow rate will be and the more vertical
lift is required. Consequently, performance will be
reduced.
•
The shorter the vertical displacement is between
the water source and the pump station, the
better the suction loading station will perform.
•
If the pump outlet is filling the tank from near the
bottom of the tank, performance will decrease as
the water level within the tank increases.
The maximum performance of this pumping station
with a minimum lift distance and at sea level in
elevation is approximately 450 gallons per minute.
1. Ensure the water pump shaft rotates the correct
direction, as identified by the casting on the
volute case.
2. Ensure the water pump RPM is set to correct
specifications (2,200 ± 50 RPM at engine high
idle).
3. Ensure the diversion valve is set for suction
loading.
4. Ensure the Foot Valve and inlet screen are free
from debris and in operational condition.
5. Ensure there are no air leaks in the inlet hoses or
connections.
6. Ensure inlet hoses are serviceable and free from
damage, kinks, and holes.
7. Ensure the Foot is submerged at least 20 inches
(0.5 meters) below the surface of the water.
8. Ensure the impeller is not plugged with debris
and is defect free.
9. Repair, replace or adjust as required.
Suction Loading Pump does not prime.
Suction Loading Pump fills the tank slowly.