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de-energized are opened in the energized position and
vice-versa. In general, Bally relays are designed to
self-hold or remain energized through a contact in
the stack after the source of initial energization is
removed.
(See
lock relay,E-IO).
B.
ASSEMB·LY ADJUSTMENTS
1. General
All switch assemblies consist of leaf springs,contacts,
separators, plastic tubing and screws to hold them to the
mounting surface on the relay frame. Before attempting
to adjust a switch assembly, make sure that these screws
are tight. ~f not, tighten screw closest to the contact
end of the leaf spring first. This will prevent the
assembly from being secured in such a manner that the
leaf
springs tend to fan out. In general, all leaf
springs are adjusted for a 1/32
11
gap in the open position
and .010" overtravel or wipe in the closed position. All
contacts should be in good condition. Unless otherwise
instructed they should be dry or non-lubricated. All
contacts should be free of dust and dirt. Tarnish can
be removed with a contact file followed
by
a burnishing
tool. Severely pitted contacts must be replaced as an
assembly. In general, contacts need be cleaned or re-
placed and adjusted when they are found to be a source
of game malfunction.
2. Relays
All of the above applies. Relay contacts are operated dry.
Beyond the normal 1/32
11
gap adjustment, relays with a self-
holding circuit must be adjusted such that the self-holding
contacts make just before the other contacts (adjust to
.025
11
gap). Care in making this adjustment prevents false
crediting and false ~coring during the game.
The game-over relay and the 100,000 relay are examples of
an interlock relay. Interlock relays are adjusted for a
.010" gap between the trip and latch coil armatures in the
trip position and a .010
11
gap between the nylon on the
latch coil armature and the trip coil armature in the latch
position. If an adjustment is necessary, the interlock relay
adjustment screws should be loosened and the trip coil re-
positioned until the trip and latch armature gaps are proper.
The screws are then secured. Always check the switch ad-
justments after a gap adjustment is made. Open contacts
should have a 1/32
11
gap. Closed must show .010" overtravel.
B