NHS Hydraulic Dock Leveler

WHAT YOU SHOULD KNOW ABOUT NOVA’S NHS HYDRAULIC DOCK LEVELER

The NHS Hydraulic Dock Leveler incorporates the use of hydraulics to raise and lower both the platform and lip. A single push-button activates a hydraulic pump for operating both the leveler platform and lip cylinders.

FEATURES AND BENEFITS

Easy push-button operation for smooth, consistent operation with a hydraulic system that provides for full float at all positions
Positive lip extension and retraction with true regenerative hydraulic control
Operating range of 12-inches above and 12-inches below dock
Full-width rear hinge mounted in compression with structural channel support
Velocity fuse hydraulic fail safe stops platform with 1 to 3-inches in free fall situation
Subframe design allows for easy quick pit clean out
Integral maintenance strut
5-year warranty

ROBUST PERFORMANCE AND DURABILITY

Deck and lip are constructed of 50,000 minimum PSI yield A572 safety tread plate
Deck is reinforced with all structural beams welded to deck and front and rear header for maximum deck support
25K-40K units: Platform supported by full-length 6-inch high “C” channels
45K units: Platform supported by full-length 6-inch high structural channel
55K units: Platform supported by full-length 6-inch high structural channel and I-beams
75K-100K units: Platform supported by full-length 8-inch high structural channel and I-beams
Regenerative main and lip cylinders provide dual-sided lubrication for all hydraulic seals
Full-width rear hinge mounted in compression with structural channel support
Continuous hinge design with grease fittings and dock bumpers included as standard with each unit
Laminated loading dock bumpers protect dock face and leveler from truck damage

OPERATION

The push-button is depressed and held activating the hydraulic system that lifts the deck from a stored position. When the deck reaches the fully elevated position, the lip cylinder is activated extending the lip assembly. The attendant releases the push-button when the lip is fully extended and the deck descends to the trailer bed. The lip will rest on the trailer bed and the deck will float with the trailer (12-inches above/below dock operating range). After loading/unloading is complete, the attendant depresses the push-button lifting the leveler from the trailer bed. The push-button is held until the lip falls pendant and then released allowing the leveler to rest in the lip keepers.

STRUCTURAL

The platform is constructed of a 1/4-inch thick four-way high tensile 50,000 minimum yield A572 safety tread plate. Platform is reinforced and supported by full-length 6-inch high formed C channels welded to deck and front and rear header for firm structural support. Front and rear header plates are 1/2-inch
thick × 7-inch high hot rolled steel. NOVA NHS series lips are four-way safety tread plate, the 25,000-pound Comparative Industry Rating (CIR) capacity is 1/2-inch thick, and the 30,000, 35,000 and 40,000-pound CIR are 5/8-inch thick. The standard lip length is 16-inches on all capacities. Hinge
tubes are 1 3/4-inch outside diameter(OD) × 5/16-inch wall, 1 7/8-inch OD × 3/8-inch wall or 2 1/8-inch OD x 1/2-inch wall depending on CIR. All lip hinge pins are 1-inch diameter M1044 steel. Steel header gussets are standard on all models 35,000-pound CIR and above. All units have grease fittings as standard. All platforms are designed to compensate for up to 4-inches of canted trailer bed.

SAFETY FEATURES

A velocity fuse limits the unit to a 1 to 3-inches drop in a fully-loaded free fall situation
Full range yellow telescoping toe guards close off sides even in highest position
Built-in lockout/tagout maintenance inspection strut
Lip keepers for cross-traffic support and automatic night lock security against theft

HYDRAULICS

The platform is raised by a main hydraulic cylinder; all hydraulic hoses are routed under the leveler platform, away from debris. The ramp cylinder is a hard chrome-plated double-acting design with a 3-inch bore and is equipped with a velocity safety stop to limit free fall of a loaded platform to 3-inches. Motor pump is mounted up for easy access and to clear debris in pit and includes a translucent reservoir for monitoring fluid level.

OPTIONAL FEATURES

18-inch (standard on 75K-100K units) or 20-inch lip
Auto-return to dock
5-inch safety barrier lip
Weather seal—rubber or brush
Optional bumper sizes and types available
IntelliDock Combination control box
Three-wheel support
Pan unit (4-sided) or pit kit (3-sided)
E-stop/independent lip
Other options available—consult NOVA

WHAT YOU SHOULD KNOW ABOUT NOVA’S NHS HYDRAULIC DOCK LEVELER

FEATURES AND BENEFITS

ROBUST PERFORMANCE AND DURABILITY

OPERATION

STRUCTURAL

SAFETY FEATURES

SIZES AND CAPACITIES

HYDRAULICS

ELECTRICAL

COLOR

DOCK BUMPERS

OPTIONAL FEATURES