Harrington NER020M Скачать руководство пользователя страница 3

GENERAL USE

EDOC0216

3 of 6

Rev. 1  March 15, 2002

13)

 

Feed the end link on the no-load side of the Load Chain through the Cushion Rubber or Chain

Spring.  For hoists using an End Wire or End Suspender install the Stopper on the 15

th

 link from

the free end then attach the Load Chain to the Hoist body – Refer to Figure 5.  For hoists using an

optional Chain Container install the Stopper on the 3

rd

 link from the free end.

14)

 

Remove the 2 Ton Name Plate, transfer the hoist's model and serial number from the 2 Ton to the
new 3 Ton Name Plate and install affix it to the Control Cover.

C

ONVERTING A 

NER030C 

INTO 

NER020M:

1)

 

Disconnect the end link from the top Connection Yoke by removing the Split Pin (cotter pin),

Slotted Nut and Chain Pin then remove the Bottom Hook Set Assembly and chain components.

2)

 

Refer to Figure 1 for steps 3 through 9.

3)

 

Remove the 4 Controller Cover Socket Head Bolts and allow the Control Cover to swing fully open.

4)

 

Loosen the 3 captive screws holding the electrical component mounting Plate against the main
body of the hoist and swing the plate out to access the required components.

5)

 

Loosen 1 of 2 Machine Screws attaching Plate A and remove the second Machine Screw.  Allow
Plate A to rotate out from the retaining slot in the bottom side of the Connection Shaft.

6)

 

Pull out the Connection Shaft and the Hoist Fixing Shaft then remove the 3 Ton Connection Yoke.

7)

 

Place the 2 Ton Top Hook Assembly or Connection Yoke on the top of the hoist.  Line up the holes
for the Connection Shaft and the Hoist Fixing Shaft and reinsert the shafts.

8)

 

Reinstall Plate A, the Panel and Control Cover.

9)

 

If using a Connection Yoke, install the 2 Ton Suspender into the Connection Yoke using the Yoke

Bolt, Slotted Nut and Split Pin (cotter pin).

10)

 

Suspend the hoists from the Top Hook or Suspender.

11)

 

For hoists fully assembled as a NER030C with Load Chain and Chain Components:

 

Remove all remaining chain components including the Stopper, Cushion Rubber or Chain
Springs, and End Wire (or End Suspender) from the Load Chain – refer to Figure 2 or 3.  Inspect
and replace any damaged or worn parts that will be reinstalled on the hoist in the 2 Ton

configuration.

 

Using a C-link, attach a Leader Chain (short length of Load Chain) to the end link of the Load
Chain on the load side (hook side) – Refer to Figure 4.  Operate the hoist in the up direction until

the Load Chain is out of the hoist body and the Leader Chain is threaded through the hoist.

12)

 

So that the end links of the Load Chain are in the correct orientation, connect or re-connect the
Load Chain to the Leader Chain on the no-load side using 

2

 C-links. The end link of the Load Chain

should be connected so that the welded portions of the Load Chain's standing links are oriented to
the outside as they pass over the Sheave – Refer to Figure 4.  Operate the hoist in the down

direction until a sufficient amount of the Load Chain is accumulated on the load side.

13)

 

Feed the end link on the load side of the Load Chain through the required chain components and

Attach the 2 Ton Bottom Hook Set Assembly using the 020M End Suspender for hoists without a
chain container – Refer to Figure 2 or 3.

14)

 

Feed the end link on the no-load side of the Load Chain through the Cushion Rubber or Chain

Spring.  For hoists using an End Wire or End Suspender install the Stopper on the 15

th

 link from

the free end then attach the Load Chain to the Hoist body – Refer to Figure 5.  For hoists using an

optional Chain Container install the Stopper on the 3

rd

 link from the free end.

15)

 

Remove the 3 Ton Name Plate, transfer the hoist's model and serial number from the 3 Ton to the
new 2 Ton Name Plate and install affix it to the Control Cover.

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