EM00136401
rev.1.0 EN
4
After around 800 hours of work, tighten the bolts on the pump body, applying a tightening torque of 3 Nm.
When making the plumbing connections, make sure that you follow the instructions below:
-
The
BOTTOM FILTER
must be installed so that it is always positioned 5-10 cm from the bottom, in order to
prevent any formation of deposits.
-
Installation of the pump suction head is
recommended for pumps with very low flow rates.
In particular, when dosing
products which develop gas (e.g. sodium hypochlorite, hydrazine, hydrogen peroxide, etc.).
-
If you need to use longer hoses than those provided in the installation kit, it is important that you use hoses of the same
dimensions as those supplied with the pump. If the
DELIVERY HOSE
may be exposed to the sun
’
s rays, we recommend
using a black hose able to withstand ultraviolet rays
-
It is advisable to position the
INJECTION POINT
higher than the pump or tank.
-
The
INJECTION VALVE
, supplied with the pump, must always be installed at the end of the delivery line on of the dosing
flow.
START-UP
Once
all the aforementioned operations
have been completed, the pump is ready to be started
.
Priming
-
Start the pump.
-
Open the priming connector by turning the knob in a counter-clockwise direction and wait for liquid to come out of the pipe
connected to it.
-
Once you are sure that the pump is completely full of liquid, you can close the connector and the pump will begin to dose.
TROUBLESHOOTING
Problem
Possible Cause
Solution
The pump is working properly but the
dosage is interrupted
Blocked valve
Clean the valves or replace them if it is not possible
to remove the build-ups
Excessive suction height
Position the pump or tank so as to reduce the
suction height
Excessive liquid viscosity
Reduce the suction height or use a pump with a
bigger flow capacity
Insufficient flow capacity
Leakage from the valve
Check that the ring nuts are properly tightened
Excessive liquid viscosity
Use a pump with a bigger flow capacity or reduce
the suction height
Valve partially blocked
Clean the valves or replace them if it is not possible
to remove the build-ups
Irregular pump flow capacity
Transparent PVC hose on
delivery
Use an opaque PE pipe on delivery
Broken diaphragm
Excessive back-pressure
Check the system pressure. Check whether the
injection valve is blocked. Check whether there are
any blockages between the delivery valves and the
injection point.
Operation without liquid
Check the presence of the foot filter (valve). Use a
level probe that blocks the pump when the chemical
product runs out in the tank
Membrane not secured
correctly
If the membrane has been replaced, make sure that
the same is correctly tightened.
The pump does not switch on
Insufficient power supply
Check whether the pump plate data corresponds to
that of the electricity network.
