Harrington Hoists NER manual T i o n s a n d Te c h n i c a l D a t a, Substance, Neck Diameter

O p t i o n s a n d Te c h n i c a l D a t a

V F D P A C K A G E S

Harrington’s standard variable frequency drive packages for ER hoists include:

•VFD installed in a NEMA 12/13 electrical enclosure

•VFD programmed & tested to customer’s specs for speed(s) and/or acceleration

•Branch circuit fuses to protect the VFD and the hoist motor

•Mounting bracket for VFD enclosure

•Wiring and hardware

L O A D L I M I T E R

Reduces the potential for making hazardous, over-capacity lifts. The load limiter is preset at 115% of rated capacity and protects the hoist mechanism from damage due to overloading. Overloading the hoist electrically activates the load limiter, making the hoist inoperable (load can still be lowered at any time).

C O R R O S I O N - R E S I S T A N T C H A I N S

These special premium chains give the advantage of increased resistance to corrosion. Ideal for job sites affected by rain, saltwater, steam and chemicals.

Both NP (Nickel Plated) and

ND (Nickel Diffused) load chains offer superior resistance to corrosive conditions.

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Corrosion Resistance Test Results for NP and ND Chains

			Concentration	Resistance to
	Substance		%	Corrosion
		Sulfuric Acid	10	Some
Inorganic		Nitric Acid	10	Some
		Hydrochloric Acid	10	Some
Acids
		Phosphoric Acid	10	Slight
		Boric Acid	5	Slight
Organic		Acetic Acid	10	Slight
Acids		Tartaric Acid	10	No
Alkalis		Caustic Soda	10	No
		Ammonia Hydroxide	10	Slight
		Air-Indoor/Outdoor	—	No
Others		Seawater	—	Slight
		Seasonings	—	No

Results listed in this table are for chemicals in a pure state. The degree of corrosion resistance may differ from this table with the presence of other chemicals, different concentrations, mixed substances or damage to the nickel surface layer.

U N I V E R S A L L A T C H K I T S

Generic design to fit most hooks. Available in standard steel or stainless steel. Neck and throat dimensions can be combined for proper fit. (Example, neck size E with throat size L.) Neck measurement must be diameter— not circumference. Latch kit brochures available upon request. Contact Customer Service for dimensions not shown.

Latch Kit	Neck Diameter	Throat Opening
Product	N	T
Code	(in)	(in)
A	9⁄16 to 5⁄8	11⁄16 to 11⁄8
B	3⁄4 to 13⁄16	11⁄4
C	7⁄8 to 1	13⁄8 to 11⁄2
D	11⁄8 to 11⁄4	13⁄4 to 17⁄8
E	13⁄8 to 11⁄2	21⁄16
F	15⁄8 to 111⁄16	21⁄4
G	13⁄4 to 113⁄16	21⁄2
H	17⁄8 to 2	3
J	21⁄16 to 21⁄8	33⁄8	Figure 1—Latch Kits
K	23⁄16 to 21⁄4	31⁄2
L	25⁄16 to 23⁄8	33⁄4
M	27⁄16 to 23⁄4	4
O	3 to 31⁄4	41⁄2