Instruction Leaflet
30-471 (E)
Page 13
Replacing Parts
The Robonic Automatic Transfer Switch has been designed to have all components accessible and readily removable from the front of the panels. The Robonic Transfer Switch is divided into two basic sections. The upper section consists of the main contacts and transfer mechanism, the lower section consisting of all the automatic control devices.
Caution
When replacing any parts of the mechanism, control transformers or breakers, isolate the Robonic Transfer Switch from any possible source of power.
To remove the transfer mechanism of the LRO transfer switch, first open the cover and remove the slide pin from the operating cam, then remove the centre bolt, the mechanism will lift straight off. The breakers and transfer motor bracket are held by four screws for ease of removal and replacement. When replacing the mechanism, first set it on the Robonic with the breaker handles in the holes provided and then fasten the centre bolt reasonably tight with the mechanism fully movable with an equivalent swing distance up and down.
To remove the transfer mechanism of the RO transfer switch, remove the four bolts holding it, taking note of which holes the bolts were in, then lift the mechanism straight off. The breakers are held by two bolts at one end and the bus connectors on the other end. The transfer motor is mounted to the transfer mechanism cover and centre drive gear. When replacing any part of the transfer mechanism, be sure that the scribe lines of the gears are in a straight row (example shown on page 6).
To prevent operation of the transfer switch while replacing mechanism or components, disconnect all sources of power.
When replacing the mechanism move it about until the breaker toggles fit between the mechanism fingers and then fasten the bolts tightly. To test for proper operation first operate manually and then connect 120 volt, 60 Hertz supply to motor leads and observe operation for free movement and proper breaker operation.
The PRO transfer switch mechanism is similar to the RO with the exception that the PRO mechanism has five gears and is mounted horizontally. The breakers are fastened to the panel by six bolts.
All Robonic transfer switch breakers and mechanisms have allowed some adjustments for mounting to assure proper operation without slipping or binding. Be sure all hardware is tightened sufficiently before
To replace any of the octal
DO NOT INTERCHANGE ANY RELAY WITH ANY OTHERS.
To replace any solid state logic modules, pull straight out and insert the replacement unit.
Parts List |
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Part Name | Style No. |
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Parts Common to Robonic II |
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1275C74G01 | |||
1275C74G01 | |||
1275C74G03 | |||
Timer, 5 min. adjustable, for TDEN,TDEC,TDNE |
| 1275C74G08 | |
Relay driver — used in place of timers, for |
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instantaneous operation |
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| 1266C77G02 |
Instantaneous relay, used for NR,ER and EC 1Ø |
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under frequency module, for “normal” or “emergency | 1275C74G04 | ||
1Ø over frequency module, for “normal” or “ermergency” | 1275C74G06 | ||
3Ø over voltage module, for “normal” or “emergency” | 1266C79G01 | ||
1Ø over voltage module, for “normal” or “emergency” | 1266C79G02 | ||
3Ø under voltage module, for “normal” or “emergency” | 1266C79G03 | ||
1Ø under voltage module, for “normal” or “emergency” | 1266C79G04 | ||
Blank cover, for unused module space |
| 1266C77G01 | |
Time delay relay for engine starting, 2.5s fixed |
| 3152A51H01 | |
Time delay relay for engine starting, adjustable | 688A886H11 | ||
Options |
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Plant Exerciser |
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| 688A888G01 |
Battery Charger 12V |
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| 1259C26G01 |
Battery Charger 24V |
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| 1259C26G03 |
4 Position s/s fixed |
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| 7070A56H01 |
4 Position s/s keyed |
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| 7070A56H02 |
Transformer Modules | Standard | Optional | |
600V, for LRO, RO | 160D997G05 | 160D997G15 | |
480V, for LRO, RO | 160D997G04 | 160D997G14 | |
416V, for LRO, RO | 160D997G03 | 160D997G13 | |
240V, for LRO, RO | 160D997G02 | 160D997G12 | |
208V, for LRO, RO | 160D997G01 | 160D997G11 | |
600V, for PRO | 160D997G10 | 160D997G20 | |
480V, for PRO | 160D997G09 | 160D997G19 | |
416V, for PRO | 160D997G08 | 160D997G18 | |
240V, for PRO | 160D997G07 | 160D997G17 | |
208V, for PRO | 160D997G06 | 160D997G16 | |
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For Type LRO Robonic II |
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Mechanism |
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| 833C222G02 |
Motor Assembly |
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| 833C223G01 |
Motor |
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| 688A732H02 |
Operating Cam |
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| 688A458G01 |
Slide Pin |
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| 688A731H01 |
Limit Switch |
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| 688A747H01 |
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For Type RO Robonic II |
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Mechanism 150 to 400A |
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| 833C226G01 |
Mechanism 600 to 1000A |
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| 833C226G01 |
Motor |
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| 688A749H01 |
Solenoid |
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| 688A740H01 |
Brake Shoe Assembly |
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| 688A738G01 |
Operating Cam |
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| 572B774H01 |
Auxiliary & Limit Switch |
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| 688A747H01 |
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For Type PRO Robonic II |
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Mechanism |
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| 688A109G01 |
Motor |
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| 688A749H02 |
Solenoid |
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| 688A740H01 |
Auxiliary & Limit Switch |
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| 688A747H01 |
