Metalfab Motorized Trolley MR Series - Manual (Page 10)

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3.0 Pre-operational Procedures
3.1 Assembly and Adjustment
3.1.1 When the MR trolley is combined with a hoist, follow and complete all pre-operational procedures
provided with the hoist. For Harrington ER and NER model hoists, follow the pre-operational
procedures in the ER/NER Owner's Manual in conjunction with all information provided in this section
for mounting and electrical connections.
3.1.2 In addition to the information and procedures provided in this section for the MR trolley, there are
specific details for using ER and NER hoists with MR trolleys. Special mounting and wiring
considerations must be taken if the trolley is used with a hoist other than an ER or NER model.
3.1.3
WARNING
Never attempt to hook mount a hoist directly to the Suspension Shaft on trolleys
up to and including 5 Ton. These trolleys are designed to be used with a suspender only and do not
have the vertical clearance required for a hook to fit between the Suspension Shaft and trolley beam.
3.1.4 Preparing ER and NER hoists for use with MR trolley.
1/8 to 3 Ton ER/NER – The standard suspension configuration uses Suspender T which orients the
hoist perpendicular to the trolley beam. Optional two-piece suspension method uses a Connection
Yoke and Suspender G, which orients the hoist parallel to the trolley beam. If the hoist is not equipped
with Suspender T or the Connection Yoke from the factory, remove the Top Hook Assembly from the
hoist and install Suspender T or the Connection Yoke as follows:
1) Refer to Figure 3-1 .
2) Remove the four Controller Cover socket head bolts and allow the cover to swing fully open.
3) Loosen the three or four 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.
4) Loosen one of two 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. Pull
out the Connection Shaft and remove the Top Hook Assembly.
5) Remove the Hoist Fixing Shaft.
6) Place Suspender T or the 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.
7) Reassemble the remaining hoist components in reverse order of disassembly.
8) If installing the Connection Yoke, place the Connection Yoke Rubber and Suspender G in the top
of the Connection Yoke. Attach Suspender G to the Connection Yoke with the Yoke Bolt, Slotted
Nut and Split Pin (cotter pin).
3 Ton (030C) and 5 Ton ER/NER – The 3 Ton (030C) and 5 Ton ER/NER hoists (double fall) always
use a Connection Yoke. The standard suspension configuration uses Suspender T which orients the
hoist perpendicular to the trolley beam. Suspender G is available as an option and orients the hoist
parallel to the trolley beam. If the hoist is not equipped with Suspender T or G from the factory, remove
the Top Hook Assembly from the Connection Yoke and install the Suspender T or G as shown in
Figure 3-2 .
8 to 20 Ton ER/NER – Since the trolley suspension shaft(s) passes through the hoist top plates, no
additional hoist preparation is required to mount the ER hoist to the trolley. Hook mount ER hoists can
not be converted to lug mount without replacing the hoist's top Suspension Plates.