Lorentz PS2-150 Series Manual For Installation And Operation page 50

48 Pump Installation
8.5.4 Initial start-up
CAUTION – Never start the pump if it is
not filled with water
8.5.4.1 Filling Pump with Water
Where the water level is above the pump inlet:
(1) Close the gate valve of the inlet and outlet pipe.
(2) Loosen the lid above the strainer basket by turning
anticlockwise (i.e. you may use the opening device
included in the delivery). Coat the O-ring seal with
petroleum jelly, close the lid by hand and make sure
that it fits properly (thread is not jammed). Failure to do
this will result in the pump not priming correctly.
(3) Open the gate valve in the inlet and outlet pipe slowly.
(4) Reopen the lid a little to remove the remaining air
below the lid. As soon as water starts to stream out of
the lid, tighten it by hand.
Where the water level is below the pump inlet:
(1) Open the gate valve in the suction pipeline.
(2) Loosen the lid above the strainer basket by turning
anticlockwise (i.e. you may use the opening device
included in the delivery). Slowly fill the pump and the
suction pipeline with water until the pump housing is
completely filled with water. Coat the O-ring seal with
petroleum jelly close the lid by hand and make sure
that it fits properly (i.e. that the thread is not jammed).
Failure to do this will result in the pump not priming
correctly.
CAUTION – A check valve must be
installed at the beginning of the inlet
pipeline.
CAUTION – Do not start the pump until it
has been filled with water completely.