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,
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.
46
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 | ||
|
|
| ||||
|
|
|
|
|
| |
|
|
| — | 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 |
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 |
|
