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Engineering Instructions and Technical Instructions This
is a little page that houses the general EI's and TI's that cover
switch maintanance and other general information that would be used in
UAX's.
MAI = Maintenance Adjustment Instruction MRI= Maintenance Routine Instruction Teles Auto:- B5099 PO standard relay (red label) B5101 PO Uniselector No 1 & system C MAI B5111 PO Uniselector No 4 MAI B5137 Lubrication of automatic switching mechanisms (all types, including clocks 44) B5141 PO standard ratchet relay type 1 MAI B5144 3000 type relay MAI 44 B5145 PO type 10 relay maintenance B5151 PO standard 100 type Meter MAI 51 B5152 PO standard 3000 type relay switches (exchange type) MAI 52 B5153 PO 3000 type relays - thermal type MAI B5154 PO type 600 relay maintenance MAI 54 B5156 Two-motion selector mechanism 2000type MAI 56 B5157 PO type 12 relay maintenance B5160 Regenerator No 1 MAI B5163 2000 type selector banks MAI 63 B5170 PO Uniselector N0 2 MAI B5171 PO Uniselector No 3 MAI B5173 Relay high speed 3/401 and 3/402 MAI B5178 High speed relays 3/411 and 3/412 MAI 78 B5189 PO type 19 relay maintenance Tests and inspections:- R5116 Selector wipers and cords MRI R116 R5117 Cleaning of two-motion selectors and motor uniselector bank contacts MRI R117 R5131 Cleaning of selector and relay set covers and inspection of felt dust excludersMRI R131 R5151 2000 type selectors, overhaul MRI R151 R5172 Automatic exchanges lubrication and cleaning of mechanisms R5204 Overhaul of PO Uniselector and preselector mechanisms MRI R204 R5212 Overhaul of PO Uniselector type 2 MRI R212 |