Harrington Hoists EDCK1, EDCK2 User Manual

ED1050 KITS

EDCK1 & EDCK2

PURPOSE

To provide instructions for installing the ED1050 Kit. The ED1050 kit provides a method to increase the capacity
of the ED525 hoist to 1050 pounds by converting the hoist from single fall to double fall.

SCOPE

WARNING

installed on an ED525 with an ET525 Mini Trolley. For trolley-mounted applications the hoist must be mounted on
an appropriate capacity push or geared trolley. Reference the Manual Trolley, TF2/TS2 Series, Owner’s M anual
for installation instructions.

CAUTION

(approximately) by installing the double fall kit, therefore load chain length must be increased accordingly.
Further, the chain container size must be increased to accommodate the longer load chain. Do not exceed the
maximum capacity of the chain container. Lift/lowering speeds are reduced by half to 22 ft/min for the single
speed hoist and 22/6 ft/min for the dual speed hoist.

The ED1050 kit can only be installed on the ED525S and DS model hoists. It cannot be

Hoist lift and lifting/lowering speed are affected by installing the ED1050 kit. The lift is halved

ED1050 KIT INSTALLATION

Before installing ED1050 kit, reference the parts list (page 9) to confirm that all the parts are in the kit.

DANGER

energized (disconnected). Lock out and tag out in accordance with ANSI Z244.1 “Personnel Protection ­Lockout/Tagout of Energy Sources”.

1. ED525 Hoist Disassembly

1.1 Remove the load chain stopper.

1.2 Remove the load chain and bottom hook.

1.3 Remove chain container (if required).

1.4 Remove top hook assembly.

1.5 Remove the hoist nameplate.

1.6 Remove the motor nameplate.

2. ED1050 Hoist Assembly

2.1 Install the Connection Yoke Complete Set (Figure 5).

2.2 Temporarily connect power to the hoist. Invert hoist so chain guide is at the top of the hoist. Insert chain
into chain guide on the load side (side away from chain container mounting point). Be sure to keep
welds of the vertical links oriented away from load sheave. Press the UP button and make sure chain
feeds though the chain guide smoothly. If the chain jams and the friction clutch slips, STOP
OPERATION. Press DOWN button and remove chain from unit. Re-insert chain until chain moves
though the chain guide smoothly.

2.3 Install the Bottom Hook Complete Set (Figure 23). Include the chain spring (Figure 37), washer (Figure

38) and cushion rubber (from ED525) on the load side of the load chain. Making sure there is no twist in
the load chain attach the chain to the joint yoke (Fig. 15) with chain pin (Fig. 20).

Before proceeding, ensure that the electrical supply for the hoist has been de-

INSTALLATION INSTRUCTIONS

1050LB CAPACITY

1 of 4

GENERAL USE

EDOC0321, REV 00

9/28/05

ED1050 KITS

EDCK1 & EDCK2

2.4 Install the cushion rubber (from ED525) and stopper complete set (from ED525) on the no-load side of
the load chain.

2.5 Install the appropriately sized chain container (Figure 43), for the load chain length using Socket Bolt BP
(Figure 44), U nut (Figure 45) and Split Pin (Figure 46). Refer to Owner’s Manual.

2.6 Attach Nameplate B (Figure 47) to hoist as shown in Figure 1-1.

2.7 Attach the Warning Seal E label, Figure 49, to hoist as shown in Figure 1-1.

2.8 Attach Nameplate M, Figure 50, to hoist as shown in Figure 1-1.

INSTALLATION INSTRUCTIONS

1050LB CAPACITY

Figure 1-1

2 of 4

GENERAL USE

EDOC0321, REV 00

9/28/05