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GE ML-14-0 Instructions Manual
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GE ML-14-0 Instructions Manual

GE ML-14-0 Instructions Manual

Spring-charged operating mechanism
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INSTRUCTIONS
SPRING-CHARGED
OPERATING MECHANISM
OIL-BLAST
CONTENTS
Introduction
Receiving, Handling
and Storage.
Description
.
Installation
.
Operation
Maintenance
Replacement Parts
AL
GENER
TYPE
ML-14-O
FOR
CIRCUIT
22
25
33
e
ELECTRIC
SUPERSEDES
BREAKERS
GEK
7153G
GEK-7153F

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Summary of Contents for GE ML-14-0

  • Page 1 INSTRUCTIONS 7153G SUPERSEDES GEK-7153F SPRING-CHARGED OPERATING MECHANISM TYPE ML-14-O OIL-BLAST CIRCUIT BREAKERS CONTENTS Introduction Receiving, Handling and Storage. Description Installation Operation Maintenance Replacement Parts GENER ELECTRIC...
  • Page 2 GEK 7 153 Spring-charged Operating Mechanism Type ML-14-0 PURCHASER'S WIRING SHOWN DOTTED RECLOSER CIRCUIT NUMBERS IN CIRCLE REFER TO C)ACR R ECLOSING RELAY STUDS 160W SM/LS OPER. RESET TO ALARM Close Control Power-Fused Permissive Control Switch Disconnect Switch Openedby manualtripping...
  • Page 3 SPRING-CHARGED OPERATING MECHANISM TYPE ML-14-O INTRODUCTION The Type ML-14-0 operator is a operating equipment are enclosed in a PROPER INSTALLATION weatherproof h ousing designed for mount- spring operated mechanism for outdoor MAINTENANCE NECESSARY ing on the front end of the breaker. D-c oil-blast circuit breakers.It is designedfor...
  • Page 4 GEK 7153 Spring-charged Operating Mechanism Type ML-14-0 HouseSupport Bracket ClosingSpring Blocking ClosingLatch Monitoring Switch BreakerVertical Operating Rod Device Operating Lever Operation Counter Auxiliary Switch Manual Close Push Rod Button Output Crank Trip Coil (52TC) Eccentric Prop ResetSpring Operation Counter Window...
  • Page 5 Spring-charged OperatingMechanism TypeML-14-0 GEK 7153 NOTE: Remove is either a-c or d-c, but preferably a-c. when in use. NEVER paper strips which are be- TEMPT SLOW MANUAL tween the door jam and the Also provided on the equipment is a CLOSING WITH doors...
  • Page 6 GEK 7153Spring-charged Operating Mechanism TypeML-14-0 Fig. 2, no longeris advanced. Theclosing When the springshave reachedthe is noticeable between parts. Electrical spring blocking device(13), Fig. 2, can fully charged position the indicator (7), operationshouldbe attemptedonly after now be removed. DO NOT OPERATE Fig.
  • Page 7 Spring-charged OperatingMechanismType ML-14-0 GEK 7153 will lock the eccentric. Tighten the lock- nuts on the eccentric after adjusting the eccentric. PROP CLEARANCE Refer to (38), Fig. 10, and to "V" Fig. 13. With the breaker closed as far as possible, that is, with the springs (79), and (62), Fig.
  • Page 8 GER 7153 Spring-charged Operating Mechanism Type ML-14.0 18-20 Trip Latch Checking Switch Trip Latch Shaft Charge-discharge I ndicator Linkage Charge-discharge I ndicator Switch Support Bolts Motor Limit Switch Support Motor Limit Switches Motor Limit Switch Striker Closing Latch Control Panel Output Coupling Terminal Boards Control...
  • Page 9 Spring-charged Operating Mechaniün TypeML-14-0 GEK7153 r,hG0 Manual Close Push Rod Eccentric Spring-charging Motor ManualChargingStud Ratchet (5/8 Inch Hex) Driving Pawl Driving Link Motor Mounting Bolts Motor Support and BearingHousing Fig. Driving Elements...
  • Page 10 GEK 7153 Spring-charged Operating Mechanism Type ML-14-0 Manual Charging Stud and Wrench Motor Support Bolts Driving Link Driving Motor Monitoring Switch Mounting Bracket ClosingLatch Monitoring Switch ClosingCoil (52CC) Ratchet Wheel Closing Coil Plunger Eccentric Fig. 6 Closing Devices is closed. No adjustment is provided and a...
  • Page 11 Spring-charged Operating Mechanism Type ML-14-0 GEK 7153 Operation Counter Trip Coil Positioning Shims Main Output Crank Trip Coil Trip Coil Plunger Trip Coil Positioning Shims Trip Latch Checking Switch Lock-out Device (69 Switch) Trip Latch Checking Switch Trip Coil Link...
  • Page 12 GEK 7153 Spring-charged OperatingMechanismType ML-14-0 Limit Switch Closing Latch Motor Limit Switch Striker Cam Shaft Control Panel Shock Mount Charging Motor Limit Switches Guide Block Charge-discharge IndicatorLinkage Motor Lead Terminal Board Closing Latch Roller Charge-discharge Indicator Control Wiring Closing Latch Shaft Spring-charging Motor Fig.
  • Page 13 Spring-charged OperatingMechanism TypeML-14-0 GEK 7153 Limit Switch Charge-discharge Indicator Linkage Guide Block Roller Bearing Cam Shaft Charge-dischargeIndicator ClosingLatch WipeAdjusting Screw Guide Block Charging Motor Limit Switch Striker Closing Latch Closing Latch Roller Charging Motor Limit Switches ClosingCoil Plunger Closing Latch Shaft Motor Lead Terminal Board Trip Latch Safety Rod Closing Latch...
  • Page 14 GEK 7153Spring-charged Operating Mechanism Type ML-14-0 Motor Limit Switches Mechanism House Support Bracket Closing Coil Plunger Motor Support Bracket Mechanism Frame Closing Latch Monitoring Switch Output Crank Main Shaft Motor Support Bracket Bolts Closing Latch Spring Output Crank Manual Close Push Rod Button...
  • Page 15 Spring-charged Operating MechanismType ML-14-0 GEK 7153 21 45 SECTION Mechanism Frame Tie Rod Trip Coil Support Trip Latch Clearance Adjustment Trip Latch Spring Trip Coil Shims Locking Nut Trip Crank Prop Spacerand ResetSpring Vertical Operating Rod Locking Lower Link Bolt...
  • Page 16 53 Spring-charged Operating Mechanism Type ML-14•0 MechanismHouseSupport Bracket Mechanism Frame Output Crank Main Shaft Output Crank Prop Limit Switch Cam Shaft Closing Latch Closing Latch Shaft Closing Latch Wipe Adjusting Screw Closing Latch Wipe Adjusting Screw Locknut Closing Latch Monitoring Switch Operating Lever Closing Coil Closing Coil Support Bracket...
  • Page 17 Spring-charged Operating Mechanism Type MI.-14-0 GEK 7153 A1--—36 Vertical Operating Rod Locking Trip Latch Stop Pin Latching and Safety Pawls Bolt Trip Latch Roller Shaft Adjustment Screw Latching and Safety Pawls Trip Latch AssemblySupport Latching Pawl Adjustment Locknut Link Trip Coil Linkage Adjustment Driving Pawl Return Spring Trip Latch ClearanceAdjustment Allen...
  • Page 18 GEK 7153 Spring-charged Operating Mechanism Type ML-14-0 This can also be checked by mea- suring the distance between the bottom of the latching and safety adjustment screw and the top surface of the latching pawl when the closing springs are come pletely charged.
  • Page 19 Spring-charged Operating Mechanism Type ML-14-0 G EK 7153 direction. Tighten the locknut after adjusting. RECLOSINGTIME-DELAY RELAY (79X) This relay is an optional featurefor those whodesire an adjustable r eclosing operation. Thereclosing cyclemustbesetup so that the breakercontactsopen at least the minimumdistance whichis givenin the breakerinstruction book before the contacts start to reclose.
  • Page 20 GEK 7153 Spring-charged Operating Mechanism Type ML-14-0 connections completed, make the follow- ing inspection and test: See that the mechanism is prop- erly set up and securelyfastened to the breaker framework. Review following adjust- ments: Check that all bolts, nuts and...
  • Page 21 Spring-charged Operating Mechanism Type ML-14-0 GEK 7153 Triplatch wipe (withtriplatch resting against stop pin) (U Fig. 13) 3/16 inch to 1/4 inch Trip latch clearance (R Fig. 13) 1/32 inch to 3/32 inch Trip latch nominal clearance. (R Fig. 13) 0.045 inch...
  • Page 22 GEK 7153 Spring-charged Operating Mechanism Type ML-14-0 OPERATION The ML-14 operating mechanism is of the stored-energy type designed to give high speed closing and opening. The mechanism will operate on a-c or d-c voltage. The operating voltage is indicated on the breaker nameplate. Closing and...
  • Page 23 Spring-charged Operating Mechanism Type ML-14-0 GEK 7153 remain energizeduntil the springsare fully charged and the control and motor limit switch (17), Fig. 4, contacts are reset. The closingspringsmay be charged manually if control voltage is lost. A standard 5/8 inch ratchet wrench should...
  • Page 24 GEK 7153 Springdlarged Operating Mechanism Type ML-14-0 Output Crank Bushing Output Crank Main Shaft Bushing Upper Link Bushing Lower Link Trip Latch Roller Bushing Trip Latch Shaft Guide Block Bearing (Outer Race) Guide Block Bearing ROTATED 90• FRom (Inner Race)
  • Page 25 Spring-charged Operating Mechanism Type ML-14•0 GEK 7153 (21), Fig. 9, and the links (41), Fig. 10, the opening operation, t he operating it does during anormal c losing o peration causing bending of the pin and indenta- mechanism is returned to its normal whenthemotoris energized.
  • Page 26 7153 Spring-charged Operating Mechanisrn Type ML-14-0 uwna Output Crank Bushing Output Crank Main Shaft Bushing Upper Link Bushing Lower Link Bushing Trip Latch Roller Bushing Trip Latch Shaft Guide Block Bearing (Outer Race) Guide Block Bearing (Inner Race) Cam Shaft Bearing...
  • Page 27 Spring-charged Operating Mechanism T ypeML-14•0 GEK7153 Output crank to breaker vertical operating rod shaft Output crank main shaft Linkageto output crank shaft Cam follower roller shaft Trip latch clearance adjustment eccentric shaft Trip latch roller shaft Trip latch shaft Cam shaft Closing latch shaft Link shaft...
  • Page 28 GEK 7153 Spring-charged Operating Mechanism Type ML-14-0 A careful inspection should be made the terminal boards. Failure to disconnect packaged to insure cleanliness and to check loose nuts bolts the motor from the circuit may cause prevent oxidation. broken retaining rings- All cam, roller, damage to the winding insulation.
  • Page 29 Spring-charged OperatingMechanism TypeML-14-()GEK 7153 LUBRICATION ALTERNATE LUBRICATION PART MAINTENANCE (REQUIRES DISASSEMBLY) PERIOD SleeveBearings No lubricationrequired. Film of D 50H15grease. Textolite Bearings - SleeveBearings - Light application of Remove b earings o r links,clean per Bronze Bearings - machine oil SAE 20 instructionsandapplyD 50H15grease liberally.
  • Page 30 GEK 7153 Spring-charged Operating Mechanism Type ML-14-0 can be made at the installation on parts ing against the sides of the REMEDY: Check all mechanism of the mechanism that are most subject adjustmen ts, latches, stops, trip latch assembly support to damage or wear.
  • Page 31 Spring-charged OperatingMechanismType ML-14-0 GEK 7153 When replacing the trip coil be Remove the trip crank adjust- ting level (12), Fig. 11. sure assemble correct ment bolt (16), Fig. 7. fiber spacersat the ends before Remove the set screws from securingthe support bracket (9).
  • Page 32 GEK 7153 Spring-charged Operating Mechanism Type ML-14-0 LATCHING PAWLS RATCHET WHEEL CLOSING DRIVING CLOSING PAWL LATCH MOTOR CLOSING SPRING CLOSING SPRING Fig. Schematic of ML-14 Mechanism order and re-alignit properly as Remove the prop reset test Remove the shaft out the left...
  • Page 33 Spring-charged OperatingMechanismType ML-14-0 GEK 7153 OPENING SPRING CIRCUIT BREAKER CONTACTS CLOSED POSITION TRIP LATCH CHECKING SWITCH PULL CLOSE TRIP FREE LINKAGE TRIP LATCH Fig. 22. Schematicof ML-14 Mechanismand Circuit Breakerin ClosedPosition retaining cotter pin and washer Discharge the springs by pushing follower roller (37), Fig.
  • Page 34 GEK 7153 Spring-charged Operating Mechanism Type ML-14-0 On the following pagesa list of re- on the purchase order. General Electric Company, giving the complete data shown on the breaker placement parts will be found. This list includes both recommended renewal...
  • Page 35 Spring-charged Operating Mechanism TypeML-14-0GEK7153 FIG. REF. QTY. PER CATALOG DESCRIPTION OF PART MECH. 006174582G027 Trip coil - 52TC-(24vd-c) 006174582G032 Trip Coil - 52TC- (48v d-c) 006174582G022 Trip Coil - 52TC- (125vd-c) 006174582G002 Trip coil - 52TC-(250vd-c) 006174582G001 Trip Coil - 52TC- (230va-c) 0132A1416P001 Driving Chain andConnecting LinkComplete 0202A6386G002...
  • Page 36 GENERAL ELECTRIC COMPANY SWITCHGEAR BUSINESS DEPARTMENT PHILADELPHIA, 19142 ELECTRIC G c NERAL 12-78 2/75...