salmson SIL Serie Instalacion Y Puesta En Servicio página 68

English
9.2.3 Changing the motor
Dismantling
56
• Align the threaded hole in the impeller shaft retaining washer to the
installation drilled hole of the coupling half.
• Insert one of the coupling screws into the installation drilled hole and
screw in (Fig. 17) half way.
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 58).
• Tighten the central screw of the impeller shaft with the prescribed
torque. Use a strap wrench to apply counter pressure.
• Tighten the coupling screw (Fig. 17).
• Tighten the central screw of the motor shaft with the prescribed
torque (Fig. 18, item 1). Use a strap wrench to apply counter pressure.
• Insert the second key (Fig. 19, item 2) of the impeller shaft.
• Put on the second coupling half (Fig. 19, item 1).
• Evenly screw the available coupling screws, as a final step, the
coupling screw from the installation drilled hole (Fig. 20).
• Unscrew both mechanical seal press-out forcing screws from the
cover (Fig. 21).
• Screw in the 4 cover screws (Fig. 22, item 1) and tighten them with
the prescribed torque.
• Rescrew and tighten the four hexagon screws (locking pin, Fig. 22,
item 2) completely in succession.
• Install the coupling guard metal sheets (Fig. 23).
• Connect the motor cable.
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 venting screw
(Fig. 29/30/31, item 1.31).
Dismantling:
DANGER! Risk of fatal injury!
There is a risk of fatal injury from electric shock when working on
electrical equipment.
• Before working on electrical equipment, switch it off and secure it
against being switched on again.
DANGER! Risk of scalding!
Due to high fluid temperatures there is a danger of scalding.
• At high fluid temperatures, let the pump cool down before starting
any work.
• Disconnect the motor connection cables.
• Dismantle the coupling guard metal sheets (Fig. 1, item 1).
• Press the mechanical seal out of its seat and dismantle the coupling
(see "Dismantling" section in chapter 9.2.2 "Replacing the mechanical
seal" on page 54 and Fig. 1 ... 9).
Salmson 11/2017