Harrington Hoists and Cranes (N)ER Load Limiter - ((N)ER2) - Manual (Page 11)

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3.1.2 3 to 5 Ton ER2/NER2 – These applications retain the standard suspension configuration. LL Suspension
Plates and LL Connection Yokes are not required. The LL is installed between the hoist’s Connection Yoke
and the Load Chain as follows:
**For 030C, follow the instruction in section 3.1.1 when removing the top hook (refer to Figure 3-1).
After the removal of the top hook, follow the instruction below (beginning with step 9).**
1) Refer to Fig. 3-3* and 3-4.
2) Remove the four Socket Bolts that hold the Controller Cover to the hoist body. Now the Controller
Cover can be lowered and left to hang by the cover belt.
3) Remove the four pan head screws and the two Shaft Retainers. This will allow the Bracing Shaft and
the Connection Shaft to be removed by sliding them out of the hoist body.
4) With the Connection Shaft and Bracing Shaft removed, the Top Hook can be removed and replaced
with the appropriate Connection Yoke.
5) Re-insert the Connection Shaft and Bracing Shaft ensuring both pass through the Connection Yoke
flange.
6) Fix the Connection Shaft and Bracing Shaft with their respective Shaft Retainer and pan head screws.
7) Install appropriate Suspender for the application, securing it to the Connection Yoke with the Yoke Bolt,
Slotted Nut, and Slit Pin. Note: (See Fig. 3-3) Double Fall applications require a Chain Pin, small
Slotted Nut, and small Split Pin, in addition to the Yoke Bolt, Slotted Nut, and Split Pin.
8) Re-install Controller Cover with the four Socket Bolts.
9) Remove the split pin, slotted nut and chain pin that connect the Load Chain to the Connection Yoke.
10) Bolt the LL to the Connection Yoke, orienting the LL Case Cover toward the hoist motor.
11) Connect the Load Chain to the LL using the Chain Pin, Slotted Nut and Split Pin. Make sure that the
load chain is not twisted. Make sure that the Bottom Hook is not capsized (refer to Figure 3-5 and 3-6
in section 3-2 of the ER2 and NER2 Owner’s Manual)
12) Remove the Chain Stopper from the load Chain 8 links below the LL. This Stopper is not used when
the hoist is equipped with the LL. The other Chain Stopper, on the no-load end of the Load Chain, is
still needed. Do NOT remove the Chain Stopper from the no-load end of the Load Chain!
13) Pass the LL Cable over the hoist body on the control cover side of the suspension plate as shown in
Figure 3-2. Keep the electrical component mounting Plate free and control cover open for the
installation of the Socket Frame Holder L and to make the necessary electrical connections.