Pentair STA-RITE PRESSOMAT PMS20 PVM 3-5 Instructions De Service page 29

CHAP. 6 – STARTING UP
Refers to FIG.3 and diagrams in the distribution board.
Control of the direction of rotation of the pump:
Once all the hydraulic and electric connections have been done for the hydraulic priming of the pumps and
collectors, proceed as follows:
x
close all the valves of the distribution system
x
open all the valves of the group, included those of the membrane ways
MAN
Press key to enable MANUAL operation unit.
Press key (10):
pump n. 1 will start;
Press key (10)
Acting on the same keys of the pump check their rotation.
If two pumps has reverse rotation:
x
If only one pump has reverse rotation:
Check the priming of the pumps:
WARNING
Warning: from this moment any operations on pump ducts, pressure
DANGER
transducer, pressure sensor, etc. must be done after having cut the
Risk of electrical
voltage off from the distribution board.
discharge
to stop the pump and check the rotation direction of the same pump.
Cut the voltage and reverse two phases of the
DANGER
Risk of electrical
switchboard power cable.
discharge
Cut the general voltage and reverse the two
DANGER
conductors on the contactor terminal of the pump in
Risk of electrical
discharge
question.
Attention:before checking the priming of the pumps,
make sure that their maximum pressure, reported on
the plate of the pumps, is compatible with the
pressure borne by the system and by its devices and
that any safety valve has a intervention value higher
than the maximum pump pressure
.
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