Flowserve MENBLOC 60Hz - Manual (Page 24)

MENBLOC 60Hz USER INSTRUCTIONS ENGLISH 71559945 - 02/13
Page 24 of 36 flowserve.com
Never remove a plug when the pump is
running.
a) When the unit is normally running, note the
maximum intensities absorbed on each phase.
b) Adjust definitively the circuit breaker for a
slightly greater current to the maximum
noticed current, which must never be superior
to the currents, indicated on the motor
description plate.
c) Check that the voltage between phases in the
motor terminals is correct.
A well-adjusted and maintained circuit breaker
efficiently protects the pump unit.
Any disjunction means that the unit is badly
running (voltage loss, cut phase, misadjustment,
foreign matter in the pump, jamming, etc.).
5.5 Running the pump
5.5.1 Venting the pump
Vent the pump to enable all trapped air to
escape taking due care with hot or hazardous
liquids.
Under normal operating conditions, after the pump
has been fully primed and vented, it should be
unnecessary to re-vent the pump.
5.5.2 Pump fitted with a mechanical seal
A mechanical seal ensures a seal without leakage
and does not need any adjustment.
Nevertheless if a light leakage occurs during start-
up, it should disappear after the initial running in of
the rubbing faces.
NEVER RUN A MECHANICAL
SEAL DRY, EVEN FOR A SHORT WHILE.
SAFETY INSTRUCTIONS WHEN THE PUMP IS
RUNNING:
If hot or freezing components of the machine
can present a danger to operators, they must be
shielded to avoid accidental contact. If a 100 %
protection is not possible; the machine access
must be confined to the maintenance staff only.
If the temperature is greater than 80 °C (176
°F), a warning plate must be clearly placed on the
pump.
It is strictly forbidden to open switch
cupboards, switch boxes, or all other live electric
equipment. If it is necessary to open them in order
to take readings, to carry out tests or adjustments
for example, only a skilled technician may do them
with adapted tools. Make sure that physical
protection against electrical risks is used.