Yale 11353395D manual Section VI Trouble Shooting

Page 24

SECTION VI – TROUBLE SHOOTING

6-1.GENERAL.This section contains possible causes and solutions to common hoist problems. Please attempt to remedy your hoist problems by following these steps before contacting the factory.

Whenever servicing electrical components be sure to shut off and lock out power following proper lockout/tagout procedures.

WARNING

Working in or near exposed energized electrical equipment presents the danger of electric shock.

TO AVOID INJURY:

DISCONNECT POWER AND IMPLEMENT LOCKOUT/TAGOUT PROCEDURE BEFORE REMOVING COVER OR SERVICING THIS EQUIPMENT.

SECTION VI – TROUBLE SHOOTING

TROUBLE

PROBABLE CAUSE

 

REMEDY

6-1 Hoist Will Not

a.No power to hoist.

 

a.Check switches, circuit breakers or fuses and

Operate.

 

 

 

connections in power supply lines. Check power

 

 

 

 

collectors.

 

b.Wrong Voltage.

 

b. Check voltage required on motor data plate

 

 

 

 

against power supply.

 

c. Loose or broken wire

c. Shut off and lock out power supply; remove

 

connections in hoist electrical

electrical cover on hoist and check wiring

 

system.

 

 

connections. Also check connections in push

 

 

 

 

button station and limit switches.

 

d.Contactor

assembly

not

d.See that necessary jumper wires are properly

 

functioning.

 

 

installed. Verify that the contactor armatures are

 

 

 

 

free to move. If binding occurs, replace

 

 

 

 

contactor. Check for burned out contactor coils.

 

e.No control voltage.

 

e.Check transformer fuse. If blown, check for

 

 

 

 

grounding and/or shorts in the push button

 

 

 

 

station. Check the transformer coil for signs of

 

 

 

 

overheating. Replace transformer if burned out.

 

 

 

 

Verify the transformer secondary is the same

 

 

 

 

voltage as the coils to which it is connected.

 

f. Motor burned out.

 

f. Replace motor. Check input power supply.

 

 

 

 

Check hoist motor connections.

6-2 Hook Moves in

a.Reverse phasing on three-

a.Interchange any two power supply line leads.

Wrong Direction.

phase hoists.

 

 

Refer to Section II, Paragraph 4.b.

 

b.Hoist wired incorrectly.

 

b.Check wiring connections with appropriate

 

 

 

 

wiring diagram.

6-3 Hook Will Raise

a.Lower electrical circuit open.

a.Check for loose connections. See that necessary

But Not Lower.

 

 

 

jumper wires are properly installed on contactor.

 

b.Contactor

assembly

not

b.See that necessary jumper wires are properly

 

functioning

 

 

installed. Verify that the contactor armatures are

 

 

 

 

free to move. If binding occurs, replace contactor.

 

 

 

 

Check for burned out contactor coils.

 

c. Down, push button is

c. Check push button contacts and wires.

 

inoperative.

 

 

 

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Contents Global Kingtm Wire Rope Hoists Forward Section II Installation Section V Inspection and Preventative MaintenanceSection VII Adjustments Section IX Parts ListSection II Installation Section I General DescriptionPRE-OPERATION Checks Section III Operation Push Button OperationPage Section IV Lubrication Changing Gearcase OILView of Hoist Showing Location Name Plates and Oil Plugs Lubrication of Rope GuideLubricant Specifications Ambient Temperature GcohMPG Section V Inspection and Preventative Maintenance Lubricant Specifications CONT’D Ambient TemperatureTemperatures above GcotRecommended Inspection and Maintenance Schedule Time Interval Inspection or MaintenanceInspection Schedule and Maintenance Report Inspection of Lower Block Inspection of Upper BlockInspection of Electrical Controls Rope INSPECTION, Maintenance and Replacement Inspection of Rope GuideUse only factory-approved rope with swaged wire rope socket Rope ReevingPage Inspection of Rope Drum and Shaft Inspection of Hoist GearingHoist Motor Inspection of Motor Brake and Actuating Mechanism Motor BrakeMotor Brake Data Testing Block Operated Limit Switch Inspection of Hoist Traverse DriveTesting Hoist Section VI Trouble Shooting Section VII Adjustments Section VI Trouble Shooting Probable Cause RemedySection Viii Wiring Diagrams Shortening of Pushbutton CablePage Page Section IX Parts List List of Part IllustrationsTo Avoid Injury TitleHeavy Hex Nut 1/2-13 Lockwasher 7/16 Page Page Motor Driven Trolley Frame and Drive B Frame Shown Frame Trolley Frame and Drive Components for Figure Lower Block Assembly Page Page Qty Req’d Block Operated Limit Switch Assembly B Frame shown Page Frame Rope Guide Assembly Includes Ref. Nos GHB-1021B GHC-1021B Page Page Page Warranty