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MQ-D306HA DIAPHRAGM PUMP — OPERATION AND PARTS MANUAL— REV. #3 (01/09/07) — PAGE 13
Figure 2 shows a typical application using the MQ D306HA series diaphragm pump. Please note that this pump is intended for the
removal of clean water and water containing some debris and solids. Maximum size of solids should not exceed 1.5 inch (38 mm)
in diameter. DO NOT set strainer on bottom of water bed. Placing the strainer above the water bed will prevent the pump from
drawing in excessive amounts of sand and foreign debris.
1. Pump – The MQ D306HA is a 3-inch diaphragm pump
that is used in general de-watering applications. Typical
dewatering applications consist of cleaning out cesspools
and septic tanks, draining slow seepage from small
excavations, trenches and construction sites, or pumping
out industrial waste.
2. Fill Cap – Prior to operation, the pump casing should be
filled with water. Remove this cap to add water to the pump.
After the initial prime, a sufficient amount of water will be
retained in the casing so that the operator will not need to
re-prime later.
If the casing is dry or has insufficient water, the pump will
have difficulty in priming which could lead to premature
mechanical seal wear thus causing damage to the pump.
3. Discharge Port – Connect a 3-inch discharge hose to
this port. Use two worm clamps to secure the hose.
Figure 2. MQ-D306HA Pump Application
MQ-D306HA — PUMP COMPONENTS
NOTE
Contact your nearest
Multiquip dealer for
quick disconnect hoses
and fittings.
4. Worm Clamp – Used to secure the hose to the inlet and
outlet ports on the pump. Use two clamps to secure the
hose on the inlet side of the pump.
5. Discharge Hose – Connect a flexible rubber hose to the
discharge port on the pump. Make sure that the hose lays
flat and is not kinked. Use only recommended type discharge
hose. Contact Multiquip parts department for ordering
information.
6. Suction Port – Connect a 3-inch inlet hose to this port.
Use two worm clamps to secure the hose.
7. Suction Hose – Connect a flexible rubber hose to the
suction port on the pump. Make sure that the hose lays flat
and is not kinked. Use only recommended type suction hose.
Contact Multiquip parts department for ordering information
8. Strainer – Always attach a strainer to bottom side of the
suction hose to prevent large objects and debris from
entering the pump. Strainer should be positioned so that it
will remain completely under water. Running the pump with
the strainer above water for long periods can damage pump.
9. Support Body – This unit is equipped with a hinged
support assembly, that allows for easy access to the pump
body.