Nilfisk-Advance SW900, Service Manual

Page: 60 / 137

Electrical and Control System 60 Service Manual – SW900
Main motor amperage check (SW900 B) (Continues)
14 If the amperage is higher, perform the following
procedures to detect and correct it:
• Check that there are no obstacles to the
rotation of the pulleys (E) and (H) and the
reduction unit (L)
• Check the main motor carbon brushes (see
the procedure in the relevant paragraph)
• If necessary, disassemble the main motor
(see the procedure in the relevant para-
graph), and check the condition of all its
components
If the above-mentioned procedures do not lead
to a correct amperage, the main motor must
be replaced (see the procedure in the relevant
paragraph)
Reassembly
15 Release the hopper position microswitch (K)
from the forced operation, and check that the
microswitch operates properly
16 Turn the tensioner (F) in the direction shown by
the arrow and engage the belt (G) to the pulley
(H) and to the tensioner (F); check the proper
operation of the tensioner (F)
17 Turn the tensioner (C) in the direction shown by
the arrow and engage the belt (D) to the pulley
(E) and to the tensioner (C); check the proper
operation of the tensioner (C)
18 Perform steps 3 5 and 6 in the reverse order
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