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CONTROL PANEL SULZER APC 1/2B
USER GUIDE
Rev.13 (2018/08/30)
2.6.
CONTROL SYSTEM DESCRIPTION
The bellow picture shows the control panel's synoptic; where it's shown there is a selector for each
pump to choose the way it has to work. We could choose between make the pump run manually
(MAN), automatically (AUTO) or make it be disconnected (0):
MANUAL OPERATION
(SELECTOR IN “MAN”)
Moving mode of operation selector to MAN, pump will start and continues running without any
consideration to level signals, PC 242 setting of max number of pumps allowed to run at the same
time, etc… While in MAN, pump will only stop if the MCB, the earth leakage switch or the thermal
sensor were tripped (or in case of motor drive failure).
It is thought mainly for tests during the pump station setting up and maintenance pump checks. For
safety reason it returns automatically to 0, you have to keep activating the selector for the period of
time you want to retain the pump running (avoiding to burn the motor by accident).
PUMP DISABLE
(SELECTOR IN “0”)
In this position the pump control wire is cut, letting the pump disabled to run in automatic, manual or
with the emergency control circuit (semiautomatic).
Don’t forget also to disconnect and to block the
MCB before any maintenance actuation,
avoiding taking mechanical or electrical risks (a contactor
could have a shortcut, a VFD or a soft starter could present electrical current leakages, etc...).
