Hanna Instruments bl 7916 User Manual
17
16
Downhill Installation
Suggested installation when pumping from one container to another,
each at different levels and with only nominal pressure.
Suggested installation when pumping from one container to another,
each at different levels and with only nominal pressure.
START-UP
At start-up, purge all chemical gases and air from the suction tubing,
valves and pump head. Start the pump.
When all the air or gas is vented, the solution being metered will
appear in the output line.
valves and pump head. Start the pump.
When all the air or gas is vented, the solution being metered will
appear in the output line.
Note: Only when operating under pressure, the pump must be
started unloaded.
LEGEND
HOSE
PIPE
CONNECTION
RESEVOIR
MANUAL
SHUTOFF
VALVE
SHUTOFF
VALVE
PUMP
FILTER /
FOOT VALVE
FOOT VALVE
CHECK VALVE
EXAMPLE OF TYPICAL INSTALLATIONS
Flooded Suction Installation
Suggested Installation for consis-
tent output when using a low
stroke rate. Also suggested for
highly viscous chemicals.
A slight suction pressure avoids
self-priming problems, especially
with high viscosity liquids.
Suggested Installation for consis-
tent output when using a low
stroke rate. Also suggested for
highly viscous chemicals.
A slight suction pressure avoids
self-priming problems, especially
with high viscosity liquids.
Suction Lift Installation
Suggested installation for most in-line
applications with nominal output and
pressures.
The maximum self-priming height is
1.5 m (5 ft.). It is advisable to install
a level controller in order to stop the
pump when feed tank (reservoir) liquid
level is low.
Suggested installation for most in-line
applications with nominal output and
pressures.
The maximum self-priming height is
1.5 m (5 ft.). It is advisable to install
a level controller in order to stop the
pump when feed tank (reservoir) liquid
level is low.
Uphill Installation
Suggested installation whenever the supply is located higher than
the discharge point; typically a waste water application.
Suggested installation whenever the supply is located higher than
the discharge point; typically a waste water application.
It is important to install the Injection valve to prevent siphoning.