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4. Installation<br />
4.3 Installation of the submersible sewage pump(s).<br />
Caution:<br />
The Aqualift F submersible TPF 1.3 kW and 1.9 kW pumps<br />
weigh 39 kg. These pumps should only be lifted and installed<br />
in the pumpstation using appropriate lifting and pulley<br />
devices. If an installation or maintenance worker<br />
needs to enter the pumpstation this worker should be<br />
equipped with the appropriate safety devices to prevent<br />
slipping and falling and there should always be at least<br />
one observer who remains outside of the chamber.<br />
4.4 Setting the float switches<br />
The float switches are set in their appropriate positions at the<br />
factory (see illustration 3.2). It is recommended that the position<br />
of these float switches is not changed as it may negatively<br />
effect the operation of the pumps. Please note that the<br />
minimum float switch cable length is 20 mm (see illustration<br />
below).<br />
Before installing the submersible pumps(s) check the inside<br />
of the pumpstation to make sure it is free of any debris or<br />
waste. Once the chamber is cleaned, the pump(s) should be<br />
lowered with the aide of a mechanical lowering device (pulley)<br />
onto the steel guide rail bars and to the bottom of the<br />
chamber making sure that the pump(s) make firm contact<br />
with the base of the guides. Remove the lowering chain from<br />
the pulley and attach it to the hook located in the upper section<br />
of the chamber so the chain is accessible without entering<br />
the chamber the next time pump service work needs to<br />
be done. The system allows pumps to be removed from the<br />
chamber without anyone needing to enter the chamber.<br />
Important:<br />
After installing the pump(s) make sure that the closure valves<br />
are in the open position (lever should be in the vertical<br />
position).<br />
off<br />
Level 1<br />
off<br />
Level 1<br />
Level 2<br />
1) Minimum level – lowest turning off level of pump<br />
Single Pump Unit<br />
This pumping station is equipped with one submersible sewage<br />
pump. The system is controlled by 3 float switches. The<br />
function of these 3 float switches are Pump OFF, Pump ON<br />
and ALARM. The float switches have been installed and set<br />
at the factory. The float switches have been set so that the<br />
ALARM float switch will activate when the wastewater level<br />
inside the chamber reaches the bottom of the inlet pipe level<br />
of the pumpstation. If other pumping levels are desired, the<br />
float switches must be changed on-site. Important is that the<br />
ALARM float switch activation point is not set above the inlet<br />
pipe elevation and that the Pump OFF float switch is not set<br />
too low – this will prevent the pump from intaking air. Ideally,<br />
the submersible pump should be completely under water.<br />
Double Pump Unit<br />
This pumping station is equipped with two identical submersible<br />
sewage pumps. The system is controlled by 4 float switches.<br />
The function of the 4 float switches are Pump OFF,<br />
Pump 1 ON, Pump 2 ON and ALARM. The float switches<br />
have been installed and set at the factory. The float switches<br />
have been set so that the ALARM float switch will activate<br />
when the wastewater level inside the chamber reaches the<br />
bottom of the inlet pipe level of the pumpstation. If other pumping<br />
levels are desired, the float switches must be changed<br />
on-site. Important is that the ALARM float switch activation<br />
point is not set above the inlet pipe elevation and that the<br />
Pump OFF float switch is not set too low – this will prevent<br />
the pump(s) from intaking air. Ideally, the submersible pumps<br />
should be completely underwater.<br />
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