Tightening Torque; Mounting Instructions - Motralec Wilo-IPL Einbauanleitung Und Betriebsanleitung

ENGLISH
7.2 Motor
Increasing bearing noise and undue vibrations indicate a worn bearing. The bearing or
the complete motor then needs replacing.
Exchange of the motor (Fig. 4, 5):
- Switch off power supply and secure against unauthorized switching.
- Close isolating valves at both pump ports.
- Lower the pressure of the pump by opening the air vent plug (pos. 2.1).
Beware of sclading!
In the event of hot liquids,
- Disconnect wires from motor terminals
- Unscrew the motor fixing-screws (pos. 4) at motorflange and lift the motor with impel-
ler and shaft seal off pumphousing by means of suitable lifting gear.
Assemble the new motor with impeller and shaft seal by means of suitable lifting gear
-
and secure the motorflange (and adapter-ring for BL-pumps) connection with bolts.
ATTENTION! Observe screw tightening torque regulations (see 7.3).
- Rewire power leads to motor terminals.
7.3 Screw tightening torque
Screw Connection
Impeller - Shaft
Pump Housing –
Motorflange
20

Tightening Torque

Nm ± 10%
M10 30
M12 60
M16 100

Mounting Instructions

tighten the screws equally
crosswise