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The control transformer is protected by two
fuses in the primary and a single fuse in the
secondary.
OUT-OF-BALANCE SWITCH
Operation:
A normally closed switch is used to monitor
movement of the tubs. This switch is a "joy-
stick" switch in which enough deflection in
any direction will cause the circuit through
the switch to open. The operating "shaft" of
the Balance switch is a steel spring. A "lim-
iter plate" is positioned away from the switch
so that the outer end of the switch shaft is
centered in the limiter plate opening. The
limiter plate is secured to the outer shell and
moves with the shell. Excessive out of
balance will cause the shell (outer tub) to
move, causing the limiter plate to deflect the
balance switch shaft enough to open the
switch contacts. See Figure 2-4.
1.
Facia panel of the
drum
2.
Limiter
3.
Rubber busing
4.
Bottom of the switch-
board
5.
Out-of-balance switch
6.
Adjustment nut
7.
Switch holder
Figure 2-4
Both the balance switch position and the
limiter plate position may be moved to allow
adjustment to the sensitivity at the balance
trip point.
Adjustment:
The following adjustments are recommended
and should be checked as part of the
maintenance.
• Remove the panel of the washer to gain
access to the balance switch components.
• Begin by adjusting the limiter (plate with
hole in it) to center the balance switch
shaft (spring) in the limiter. Secure the
limiter mounting bolts.
• The distance from the limiter to the switch
body should be 100 mm (about 4 inches).
Use the balance switch mounting nuts to
move the switch to the front or back for
this adjustment.
• The "sensitivity" of the balance switch is
adjusted by moving the switch holder (and
the switch) to the left or right to change
the trip point.
In most cases the balance assembly is
adjusted at the factory and little if any adjust-
ment will be needed.
OVERFLOW
The machine has overfill protection via the
overflow system. The overflow system
consists of a nipple fitting in the back of the
shell assembly (outer tub), overflow hose,
and nipple fitting on the drain outlet
connection.
In case of overfill, water is routed from the
overflow nipple fitting (note: the overflow
outlet is located several inches higher than
the normal fit height in the shell assembly)
and out the drain. The outlet of the overflow
hose connection is on the outlet side of the
drain valve and allows the overflow to work
even if the drain is closed.
VENTS
There are two vents located on the MFS
model machines. The vents are used as an
air break for the soap compartment and outer
tub. The purpose of the vents are to prevent
an air tight compartment from siphoning and/
or to prevent contaminated water from
entering a fresh water supply. Vapors from
hot water may escape from the vents into the
atmosphere. Use caution in this area due to
the possibility of hot vapors.
Generally all vents exit at the rear the ma-
chines. On larger MFS models, the soap
16009607
Section 2. Service Procedures
©1999 Maytag Appliances Sales Company
2-6
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