Flowserve M-series PolyChem - Manual (Page 25)

USER INSTRUCTIONS PolyChem M-SERIES ENGLISH 71569218 07-11
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Page 25 of 60
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4.7 Electrical connections
Electrical connections must be made by
a qualified Electrician in accordance with relevant
local national and international regulations.
It is important to be aware of the EUROPEAN
DIRECTIVE on potentially explosive areas where
compliance with IEC60079-14 is an additional
requirement for making electrical connections.
It is important to be aware of the EUROPEAN
DIRECTIVE on electromagnetic compatibility when
wiring up and installing equipment on site.
Attention must be paid to ensure that the techniques
used during wiring/installation do not increase
electromagnetic emissions or decrease the
electromagnetic immunity of the equipment, wiring or
any connected devices. If in any doubt contact
Flowserve for advice.
The motor must be wired up in
accordance with the motor manufacturer's instructions
(normally supplied within the terminal box) including
any temperature, earth leakage, current and other
protective devices as appropriate. The identification
nameplate should be checked to ensure the power
supply is appropriate.
See section 5.3, Direction of rotation
before connecting the motor to the electrical supply.
4.8 Final shaft alignment check
– Long-
coupled
a)
Level baseplate if appropriate.
b) Mount and level pump if appropriate. Level the
pump by putting a level on the discharge flange.
If not level, adjust the footpiece by adding or
removing shims [3126.1] between the footpiece
and the bearing housing.
c) Check initial alignment. If pump and driver have
been remounted or the specifications given below
are not met, perform an initial alignment as
described in section 4.5. This ensures there will
be sufficient clearance between the motor hold
down bolts and motor foot holes to move the
motor into final alignment. The pump and driver
should be within 0.38 mm (0.015 in.) FIM (full
indicator movement) parallel, and 0.0025 mm/mm
(0.0025 in./in.) FIM angular.
Stilt mounted baseplates
If initial alignment cannot be achieved with the
motor fasteners centered, the baseplate may be
twisted. Slightly adjust (one turn of the adjusting
nut) the stilts at the driver end of the baseplate
and check for alignment to the above tolerances.
Repeat as necessary while maintaining a level
condition as measured from the pump discharge
flange.
d) Run piping to the suction and discharge to the
pump. There should be no piping loads
transmitted to the pump after connection is
made. Recheck the alignment to verify that there
are no significant changes.
e) Perform final alignment. Check for soft-foot under
the driver. An indicator placed on the coupling,
reading in the vertical direction, should not
indicate more than 0.05 mm (0.002 in.) movement
when any driver fastener is loosened. Align the
driver first in the vertical direction by shimming
underneath its feet.
f) When satisfactory alignment is obtained the
number of shims in the pack should be minimized.
It is recommended that no more than five shims
be used under any foot. Final horizontal
alignment is made by moving the driver.
Maximum pump reliability is obtained by having
near perfect alignment. Flowserve recommends
no more than 0.05 mm (0.002 in.) parallel, and
0.0005 mm/mm (0.0005 in./in.) angular
misalignment. (See section 6.8.4.1)
g) Operate the pump for at least an hour or until it
reaches final operating temperature. Shut the
pump down and recheck alignment while the pump
is hot. Piping thermal expansion may change the
alignment. Realign pump as necessary.
4.9 Protection systems
The following protection systems are
recommended particularly if the pump is installed in a
potentially explosive area or is handling a hazardous
liquid. If in doubt consult Flowserve.
If there is any possibility of the system allowing the
pump to run against a closed valve or below minimum
continuous safe flow a protection device should be
installed to ensure the temperature of the liquid does
not rise to an unsafe level.
If there are any circumstances in which the system
can allow the pump to run dry, or start up empty, a
power monitor should be fitted to stop the pump or
prevent it from being started. This is particularly