Priming; Start-Up - Pentair STA-RITE DHI 2-40 Instructions De Service

4.1 PRIMING

NOTE
A machine is considered below the water level if the level of the fluid to pump is above the suction mouth of the machine,
both with closed or open loop systems.
4.1.1 MACHINES INSTALLED BELOW THE WATER LEVEL
To fill a machine below the water level, perform the following operations:
• Close the gate on the delivery line
When the fluid starts to exit from the priming cap, preform the following operations:
• Re-tighten the priming cap
DANGER
Make sure the priming cap is perfectly tightened.
4.1.2 MACHINES INSTALLED ABOVE THE WATER LEVEL (ON THE SUCTION SIDE)
NOTE
A machine is considered above the water level if the level of the fluid to pump is below the suction mouth of the machine,
both with closed or open loop systems.
To fill a machine above the water level, perform the following operations:
• Open the gate on the suction line
• Close the gate on the delivery line
When it is no longer possible to add futher fluid, perform the following operations:
• Re-tighten the priming cap
DANGER
Make sure the priming cap is perfectly tightened.

4.2 START-UP

Perform the following operations to start the machine for the first time:
• Open the gate on the suction line
• Start the machine
• Loosen the priming cap
• Fully open the gate on the suction line
• Open the priming cap
• Start the machine
• Slowly open the gate on the delivery
line to avoid water hammering on the
delivery line
• Slowly open the gate on the suction
line
• Open the gate on the delivery line
• Add the fluid through the priming cap
until it starts to come out from the cap
• Open the gate on the delivery line
• Adjust the thermal relay depending on
the current absorbed by the motor
• Adjust the enabling and disabling
pressure of the pressure switch that
controls the operation of the machine
EN
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