Dayton Electric Chain Hoist 3YB75

Warning: Disconnect hoist from power supply before starting the procedure

Hoist disconnected from power supply

Reconnect the leads to the terminal block according to the wiring diagram located inside the electrical cover

Leads reconnected according to the wiring diagram

Recheck phasing and limit switch operation after converting voltage

Phasing and limit switch operation checked

Make sure all terminals are securely fastened and check for damaged insulation

Periodic — Indicates items requiring inspection monthly to yearly. Inspections to be performed by or under the direction of a properly designated period.; The exact period of inspection will depend on frequency and type of usage. Determination of this period will be based on the user’s experience.; It is recommended that the user begin with a monthly inspection and extend the periods to quarterly, semi-annually or annually based on user’s monthly experience.

Possible Deficiencies:; - Cracks, bending, stripped threads Lug Connections

2. Inspect Pins, Bearings, Bushings; Possible Deficiencies:; - Excessive wear, corrosion, cracks, distortion Shafts, Couplings

Possible Deficiencies:; - Looseness, stripped and damaged threads, corrosion

Possible Deficiencies:; - Distortion, cracks, and excessive wear.

- Build-up of foreign substances

Deficiencies in Operating Controls

Deficiencies in Brake Mechanism

Inspect Suspension Lug (if used)

1. For major repairs or when the hoist is to be sectioned in the suspension area, it will be necessary to move the hoist to a workbench or table.

2. For repairs which can be done by removing the electrical cover only, the hoist need not be moved.

Lowering the hoist to a convenient working level is desirable.

NOTE: If you do not have an experienced mechanic to do your repair work, we recommend that you send your hoist to an approved service station for repairs.; Use authorized repair parts only.

Remove load and disconnect hoist from power supply before starting to do any repairs or to take any sections apart.

The following repair instructions will help you in understanding repair procedures.

1. Remove the electrical cover. The control panel, brake assembly, and limit switch assembly are located under the cover.; The contactor and terminal block are accessible without further disassembly. It will be necessary to remove the electrical panel to replace the transformer, solenoid, limit switches, or brake parts.

Warning: Disconnect hoist from power supply before starting the procedure

Hoist disconnected from power supply

Upload a photo of the electrical cover removed

Enter the gap between the brake armature and the field

Is the gap within the acceptable range (0.015'' - 0.040'')?

Adjust the 3 locknuts and check with a feeler gauge

Is the gap the same on both ends of the solenoid?

CAUTION: Be sure the bottom of the armature does not bear against the splined adapter