salmson SIL Serie Instalacion Y Puesta En Servicio página 61

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9.2.3 Changing the motor
52
The motor bearings are maintenance-free. Increased bearing noises
and unusual vibrations indicate bearing wear. The bearing or motor
must then be changed. The drive may only be replaced by the Salmson
customer service.
• Disconnect the system from the power and secure it against being
switched on.
• Make sure it is not live.
• Earth the work area and short-circuit.
• Close the shut-off device upstream and downstream of the pump.
• Depressurise the pump by opening the air vent valve (Fig. 1/2/3/4/5,
item 1.31).
Dismantling:
DANGER! Risk of scalding!
Due to high fluid temperatures there is a danger of scalding.
• If the fluid is hot, allow it to cool down before all work.
NOTE:
• When tightening screw connections in conjunction with the work
described in the following: Observe the screw tightening torque for
the thread type (see list "Table 5: Screw tightening torques" on
page 53).
• Disconnect the motor connection cables.
• Dismantle the coupling guard (Fig. 1/2/3/4/5, item 1.32).
• Dismantle the coupling (Fig. 1/2/3/4/5, item 1.5).
• Loosen the motor fastening screws (Fig. 1/2/3/4/5, item 5) on the
motor flange and lift the motor off the pump with suitable hoisting
gear. On PBS pumps, the adapter ring comes loose (Fig. 3, item 8).
• Install the new motor with suitable hoisting gear and screw the lan-
tern/motor (and adapter ring for PBS pumps) connection together.
• Check the coupling and shaft sliding surfaces. If necessary, clean
and lightly oil them.
• Pre-install coupling shells on the shafts with shims inserted in
between them.
• Slide the forked spacer (Fig. 19, item 10) between the lantern and
coupling. The forked spacer must sit there without any play.
• First, slightly tighten the coupling screws until the coupling half-
shells are in contact with the shims.
• Afterwards, screw the coupling together evenly. In doing so, the
specified distance between the lantern and the coupling of 5 mm
is automatically adjusted via the forked spacer.
• Remove the forked spacer.
• Install the coupling guard.
• Connect the motor cable.
Salmson 11/2017