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blue
BOX - Translation of the original instructions
4.6.1 FIXED version
The pump is connected directly to the discharge pipe.
Installation procedure (see Annex 5)
1. Place the gasket in the relevant seat.
2. Insert the connecting pipe into the seal, from the inside of the tank to the outside.
If necessary, lubricate the gasket to make it easier for the pipe to slide through.
3. Screw the discharge pipe to the discharge port of the pump. Use a straight pipe
for vertical discharge pumps and an elbow pipe for horizontal discharge pumps.
Apply Teflon or a similar product to the thread to ensure a seal.
4. Place the pump on the bottom of the tank. The ribs ensure perfect stability of the pump while it is in operation.
5. Couple the connecting pipe to the discharge pipe by tightening the collar connection.
4.6.2 Version with coupling device (DAC) – only models 250 and 500
The pump is connected to the system via the coupling device, which facilitates pump
removal of the pump in the event of maintenance work.
In addition, the coupling device, if it is equipped with a check valve, has a special valve
that allows venting of air that may have formed during a period of prolonged inactivity,
thereby ensuring priming of the pump.
Installation procedure (see Annex 6)
1. Attach the sliding flange to the pump discharge port the with screws.
2. Lower the pump into the tank by running it along the guide pipes and attach it to
the coupling device
The connection between the discharge pipe and the system must be made in a workmanlike manner so as to ensure no
leakage even when subjected to the pressure exerted by the pump and the water column.
4.7 Vent valve
The purpose of the vent valve is to prevent the formation of explosive or toxic mixtures inside the tank.
It also serves to prevent overpressure due to liquid entry and the vacuum generated during pumping.
The vent valve is equipped with an activated carbon filter.
It is possible to remove the filter and attach a 50mm (2") inner diameter vent pipe to the valve;
Do not use smaller diameter pipes to avoid system noise and ensure proper operation.
The other end should terminate in the open at a suitable height and with a flame arrester filter.
Make sure that the vent pipe is perfectly sealed.
Use of the vent pipe must still be evaluated depending on the installation. Any local regula-
tions may require the use of a different diameter vent pipe.
4.8 Float switches
Float switches allow the pump to start and stop automatically according to the level of the liquid inside the tank.
The intervention level of the installed pump must be set between the minimum and maximum levels allowed:
• Minimum level: to ensure priming of the installed pumps, i.e., complete immersion of the pump body.
• Maximum level: always below the alarm level.
Different solutions are possible depending on the model:
• blueBOX 60-90-150 standard version: Use a pump (to be purchased separately) equipped with a float switch.
• blueBOX 150 full optional version: The lifting station is equipped, as standard, with a 4-20 mA level sensor already mounted inside the tank,
to be connected to the electrical control panel provided. In this case, a pump without a float switch must be used.
• blueBOX 250- 500: The lifting station is equipped, as standard, with a 4-20 mA level sensor already mounted inside the tank, to be connected
to the electrical control panel provided. In this case, a pump without a float switch must be used.
The minimum level of the liquid must never fall below the threshold shown in the figure, regardless of the number of
pumps installed.
Any change in the position of the floats changes the way the levels are managed inside the tank.
Zenit is not liable for malfunctions or damage to persons or property if the original position of the floats is changed.
EN
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