Yale Series Y80 manual Section I General Description, Section II Installation

SECTION I — GENERAL DESCRIPTION

1-1. GENERAL. YALE electric hoists are precision built wire rope and drum type hoists which are made in five rated load sizes (1/2, 1, 2, 3 and 5 tons) with various lifts, lifting speeds and electrical service. Equipped with an integrally welded mounting lug, they are designed to be rigidly attached to an overhead structure or mounted on YALE rigid mount trolleys for operation on runway beams. On certain models optional base mounting or other supporting methods may be obtained. For full information apply to factory at Muskegon, Michigan 49443.

NOTICE

YALE hoists are available with an optional built-in mechanical overload clutch. Hoists having this device are identified with words WEIGHT WATCHER on the hoist.

The WEIGHT WATCHER overload clutch permits operation of your hoist within its rated load and helps prevent lifting of excessive loads which could cause permanent deformation of a properly maintained hoist or trolley.

1-2. BASIC CONSTRUCTION. All models are of the same basic construction and consist of a rugged welded steel frame which houses a lifting drum and serves as the suspension for carrying the entire hoist load. A mounting lug, for attaching the hoist to a trolley or overhead support, is located on top of the frame. An aluminum alloy gearcase and cover, attached to one end of frame, houses a three-reduction gear train and a mechanical load brake. An electric driving motor with disc- type motor brake is located beside the frame, face mounted on the back of the gearcase. Electrical system components, located on the end of the frame (opposite gearcase end) and enclosed by a steel cover, control operation and rotating direction of a driving motor. A hoisting rope and an enclosed lower block assembly are used for lifting loads. An upper limit stop is used to limit travel of the lower block in the raising direction, to protect hoist from damage. A push button control station, for operating the hoist, is suspended from the electrical compartment.

1 - 3 . DIFFERENCES BETWEEN MODELS . The main differences between models are in rope reeving and frame size as described below.

a. Rope Reeving. There are four types of rope reeving used: Two parts of rope single reeved, four parts of rope single reeved, six parts of rope single reeved and two parts of rope double reeved. Single reeved hoists have one end of the rope anchored to the drum, whereas, double reeved hoists have both ends anchored to the drum. On single reeved models, the lower block travels sideways as rope winds on drum, double reeved models offer true vertical lift. For illustrations, refer to Section V, paragraph 5-9, “Rope Reeving” instructions.

b. Frame Size. Length of frame furnished is dependent on hoist capacity and lift. Four frame lengths are used; short frame, long frame, first and second extensions. Short frame hoists have a rope drum flange to flange distance of approximately 9-3/4", whereas this distance on a long frame hoist is approximately 16-3/4". First extension frame hoists have a flange to flange distance of 22-15/16" and second extensions have 35-3/8".

c. Motor Brake. Hoists are equipped with a disc brake mounted on the motor end bell and operated by a short stroke solenoid.

This brake requires periodic adjustment.

SECTION II — INSTALLATION

2-1. GENERAL. YALE electric hoists are lubricated and tested before being shipped from the factory. To place hoist in service, attach to a suitable suspension (paragraph 2-2), connect to electrical service (paragraph 2-3) and perform pre-operation tests and checks (paragraph 2-4).

WARNING

Before attempting installation of hoist or trolley, the main power switch must be locked in the open position (off).

2-2. SUSPENDING HOIST. The hoist may be suspended in a fixed location servicing only the area directly below the hoist (Lug Mounted) or the hoist may be attached to a moveable trolley or trolleys which in turn may be mounted on an l-beam attached to a building or crane, servicing a larger area (Trolley Mounted).

WARNING

DO NOT use small holes for attaching this hoist unless rated load on lower block is 1 (one) ton (2000 Ibs.) or less.

a. Lug Mounted hoists attach to adequate supports welded or bolted to a building or other structure. The supporting structure must have sufficient strength with appropriate safety factor, to support the weight of the hoist and rated load as well as other loads to which the supporting structure may be subjected.

WARNING

Design and installation of hoist support shall be performed only by qualified persons.

Steel angles or plates used to suspend hoist should be spaced as close to the hoist suspension lug as possible. Mounting bolts or threaded studs, attaching hoist to mounting structure, shall have a diameter not less than recommended by manufacturer and material equivalent to ASTM A 325. Make certain that mounting bolts or studs are long enough so that the threads do not engage the mounting support and that mounting bolts or studs are secured with nuts and lockwashers, self-locking nuts or cross bolting, if unthreaded.

b. Trolley Mounted hoists are attached to moveable trolleys. If the hoist is mounted on an existing trolley, a qualified person shall determine that the trolley and its supporting structure are adequate to support the rated load and weight of the hoist. Hoist/trolley units may be shipped from the factory with trolley packaged separately. If the trolley can be installed directly over the end of the supporting beam, assemble trolley to hoist. Be certain that the spacing between wheel flanges, after assembly, is 1/4" greater than exact width of beam flange. (See Figure 2-1 below and instruction sheet furnished with trolley.) Using proper equipment, carefully lift trolley and hoist and install on end of beam.

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