SANDPIPER WR10 3/8 - Manual (Page 6)

Page 3 Rev 0614
The pump should be mounted in a vertical
position. In permanent installations, the pump should be
attached to plant piping using a flexible coupling on both the
intake and discharge con-
nections to reduce vibration
to the pump and piping. To
further reduce vibration, a
surge suppressor next to the
pump may
be used.
Suction pipe size should be
at least the same diameter
as the inlet connection size,
even larger if highly viscous
fluid is to be pumped. If suc-
tion hose is used, it must be
of a non-collapsible
reinforced type.
Discharge piping should be
of at least the same diameter
as the discharge connection.
It is critical, especially on the
suction side of the pump, that
all fittings and connections are air tight or pumping efficiency
will be reduced and priming will be difficult.
Make certain the air supply line and connections
and compressor are capable of supplying the
required pressure and volume of air to operate
the pump at the desired flow rate. The quality of
the compressed air source should be considered.
Air that is contaminated with moisture and dirt
may result in erratic pump performance and
increased maintenance cost as well as frequent
process “down time” when the pump fails to
operate properly.
The pump is powered by compressed air.
Compressed air is directed to the pump air
chamber by the main air valve. The compressed air is sepa-
rated from the
fluid by a membrane called a diaphragm.
The diaphragm in turn applies pressure on
the fluid and forces it
out of the pump
discharge. While this is
occurring, the opposite air
chamber is
depressurized and
exhausted to
atmosphere and fluid is
drawn into the pump suction.
The cycle again repeats, thus
creating a constant recipro-
cating action which maintains
flow through the pump.
The flow is always in through
the bottom
suction connection and out
through the top
discharge connection. Since
the air pressure acts directly
on the diaphragms, the pres-
sure applied to the fluid
roughly approximates the air supply
pressure supplied to the main air valve.
INSTALLATION, OPERATION & MAINTENANCE
Installation Pump Operation
Shut Off Valve
Air Stop Valve/
Needle Valve
Filter Separator
Pressure-reducing
Valve
Fluid
Inlet
Discharge Pressure
Gauge
Manometer
Shut Off Valve
Air Connection
Fluid
Discharge
AODD PUMP
Air Exhaust
Air Exhaust Muffler
Pulsation Dampener
Union or Pipe Flange
Connection
Union or Pipe Flange
Connection
Flexible
Connection
Flexible
Connection
Flexible
Connection
Pump Size Minimum Air Line Size Minimum Suction Line
Size
1/4" 1/4" 1/4"
3/8" 1/4" 3/8"
1/2" 1/2" 1/2"
1" 1/2" 1"
1-1/2" 1/2" 1-1/2"
2" 1/2" 2"
3" 3/4" 3"
Recommended Piping Connections