Wilo TOP-S Instrucciones De Instalación Y Funcionamiento página 15

Torque to:
• M6 ......... 7 ft lb
• M10 .... 22 ft lb
• M12 .... 45 ft lb
• After replacing, check that the rotor shaft still rotates freely.
TOP-S pumps which are equipped with vent screws can be checked as follows
(Fig. 1a, Pos.9):
Remove the plug (located in the middle of the rating plate), insert a flat head
screwdriver into the slot end of the shaft and turn to ensure free rotation.
TOP-S pumps without vent screws and not installed can be checked as follows:
Insert a long screwdriver in the discharge port of the pump body (Fig.1, Pos.4)
until you can feel the impeller and rotate it with the tool. If the impeller does
not turn easily, repeat the disassembly / reassembly process.
• Between the stator housing and pump volute, there are three drain holes to
allow condensed water to escape (Fig. 3, Pos. 2).
CAUTION! Possible damage of the pump!
The motor and condensate holes must remain free.
For units which are to be insulated, only the pump volute may be insulated.
7.2 Electrical connection
DANGER! Electrical shock hazard!
Dangers caused by electrical energy must be excluded.
• Electrical work by a qualified electrician only!
• National Electrical Codes, local codes and regulations must be strictly
followed.
• All electrical connections must be performed after the electrical supply has
been switched off and secured against unauthorized switching.
• For safe installation and operation a proper grounding of the pump to the
power supply's grounding terminals is required.
• Suitable fused overload protection is required to protect the motor per local
electrical codes.
• The operating voltage and frequency are marked on the rating plate.
• The pump must be connected with a power supply conductor equipped with a
grounded plugconnection and a main power switch (Fig.8 or Fig.9).
• A minimum cable size of 14 AWG should be used (refer to the local code for
wiring restrictions).
NOTE: All conductors must be suitable for at least 194°F (90 °C).
• The electrical cable must be installed so that it never touches the pipework and/
or the pump and motor housing.
• The connecting cable can be fed through the cable entry either above or below
the terminal box. It is advisable to install the screwed cable glands with the
entrance of the conduit pointing downwards. The cable entry which is not used
must be closed by a blind plug (Fig.5 and Fig.6).
Installation and operating instructions Wilo-TOP-S
English
9