Spring Replacement; Magnet Replacement - Syntron Material Handling BF-4-ALF Service Manual

trough should be removed daily. Look for buildup at the rear of the feeder trough, particularly around and
under the hopper opening. A clean, dry, compressed air supply is recommended for routine cleaning.
WARNING: Do not oil the spring assemblies. Oiling the spring assemblies will destroy the
clamping effect of the spring pads against one another. No lubrication is required for electromagnetic
feeders.
Any sign of excessive heat or burned components is an indication of trouble. Under normal operating
conditions, feeder coils run warm, but never too hot to touch. At the first sign of overheating, immediately
investigate and correct the cause.

SPRING REPLACEMENT

WARNING: Disconnect the power supply at the safety disconnect switch before performing any
maintenance work.
If a spring needs replaced, SMH recommends replacing all the springs rather than only the defective
one(s).
Work on one spring stack at a time. Start with a rear spring stack and note the location and arrangement
of each spring, spacer, and clamp. Remove the bolts that secure the leaf springs to the base and the
bolts that hold the springs to the trough mounting bracket.
Install the new spring assembly in the reverse order to which the old assembly was removed. Replace
the cap screws and torque as specified on page 11. DO NOT OVERTORQUE.

MAGNET REPLACEMENT

Before and during magnet replacement, refer to Figure 5 on page 11.
WARNING: Operating feeder with the side plates removed will cause it to overstroke.
DANGER: Disconnect and remove feeder power cable from the power supply.
If it is necessary to replace the magnet assembly, remove the right side plate and side gasket to expose
the magnet. Next, remove the two magnet locking screws on the bottom of the drive and the two magnet
adjusting screws on the rear of the drive. Then remove the ground wire and strain relief from the base
casting Refer to figure 5.
It should now be possible to remove the magnet assembly with power cable and replace it.
magnet is in position, attach the ground wire with ground wire screw; insert the magnet assembly locking
screws and the magnet adjusting screws (sealing urethane compression spring and teflon washer on the
2-
MAGNET REPLACEMENT (cont'd)
8
Once the