Eriez HD36 Manual

Installation, Operation
and Maintenance
Instructions
ERIEZ WORLD HEADQUARTERS: 2200 ASBURY ROAD, ERIE, PA 16506–1402 U.S.A.
WORLD AUTHORITY IN SEPARATION TECHNOLOGIES
VM-3166B
Vibratory
feeder
model Hd36 & Hd36C
Vibra-
tory
feeder
model Hs36

2
CAUTION
Safety labels must be affixed to this product.
Should the safety label(s) be damaged, dislodged
or removed, contact Eriez for replacement.
Introduction
This manual details the proper steps for installing,
operating and maintaining the Eriez Vibratory Feeder.
Careful attention to these requirements will assure the most
efficient and dependable performance of this equipment.
If there are any questions or comments about the manual,
please call Eriez at 814-835-6000 for Vibratory Feeder assistance.
©2019 ERIEZ MAGNETICS ALL RIGHTS RESERVED

Vibratory Feeder: Model HD36 & HD36C
3
Table of Contents
ERIEZ VIBRATORY FEEDER - MODEL HD36 & HD36C
INSTALLATION ..................................................................................................... 4
Mounting.......................................................................................................... 4
Electrical Connections ..................................................................................... 4
OPERATION AND MAINTENANCE ...................................................................... 4
Tuning Guide ................................................................................................... 4
How To Measure Displacement....................................................................... 5
Tuning for Non-standard Trays ........................................................................ 5
Tuning for Different Conditions of Tray Loading .............................................. 6
REPAIRS ............................................................................................................... 6
Coil Replacement ............................................................................................ 6
Spring Change or Replacement ...................................................................... 7
Armature Replacement.................................................................................... 8
The Hi-Vi Magnetic Drive Circuit...................................................................... 8
TROUBLESHOOTING ........................................................................................ 10
STORAGE ........................................................................................................... 11

4
Mounting
This Hi-Vi model should be mounted on a flat surface
and fastened with bolts or screws of proper size.
Use lock washers under the bolt heads.
Electrical Connections
NOTE: The Eriez Vibratory Feeder is designed to be
operated from an AC source. It cannot be operated
from a DC source.
All wiring should conform to all applicable
electrical codes.
1. Check the specifications of the power line to be
certain that they are the same as those shown
on the nameplate.
2. Connect the black and white wires in the feeder
power cord to the power source or to the proper
terminals in the control box.
3. Connect the green wire to the ground or to the
lug provided in the control box.
4. If using a control box, make all connections as
indicated on the control wiring diagram.
5. Connect the ground lug in the control box to a
good earth ground (a cold water line is excellent).
6. On multiple drive feeders (two or more drives
on one tray) all drives should be wired electrically
in phase and in parallel.
The black wires from each power cord should be
connected together and the white wires connected
together. The black wires should be connected to
the line side of the input voltage and the white wires
should be connected to the neutral side.
You are now ready to start your vibratory feeder.
Installation
FIGURE 1
Operation & Maintenance
Do not operate the unit with associated equipment
touching any part of the unit.
To start the feeder after all connections have been made,
apply power to the line connected to the feeder. If a
controller is used, operate the switch on the controller
and adjust the output voltage to maximum by rotating
the control knob to the full clockwise position. Ordinarily
(at ordinary room temperatures) the unit will take about
two minutes to reach full steady-state displacement.
After full steady-state displacement has been attained,
use the controller to adjust the unit to the desired
feed rate.
No routine maintenance or lubrication is required,
except that any accumulation of foreign matter should
be periodically removed from between the tray-tiebar
assembly and the body, and from between the body and
the mounting surface, to prevent restriction of movement
of the vibratory elements.
IMPORTANT NOTE:
Special Trays and Attachments
Eriez engineering service should always be consulted
before undertaking the design or construction of special
trays. Neither standard nor special trays as furnished by
Eriez should be modified or attachments made without
first consulting us. Not doing so will void warranty. (See
Standard Tray Specifications.)
TUNING GUIDE
General Information
The tuning means is provided solely for the purpose of
mechanically tuning the unit, with its tray, to the desired
vibratory displacement at full voltage. When a unit is
furnished complete with tray, it is properly tuned to the
tray at the factory. Such tuning is naturally somewhat
different for trays of different size or weight.
Tuning is accomplished by changing the stiffness of
the tuning spring stack of the feeder (see Figure 2).
Variations in stiffness are obtained by changing the
number of springs in the stack and/or by changing
the thickness of fiberglass springs.
In normal operation at full voltage, the total
displacement for standard size trays, measured at
the back of the tray, is .120 to .125 inches (3.0 mm
to 3.2 mm). For trays substantially larger than standard,
this normal displacement range should be reduced.
Refer to the serial number plate on your feeder for the
amplitude that your unit was tuned.
NOTE: HD36C
does not include
link bars or
elastomers

Vibratory Feeder: Model HD36 & HD36C
5
How to Measure Displacement
Position an Eriez displacement sticker on the outer
side of the tray, near the rear of the tray and at an
angle of 25° from vertical (see Figure 3).
With unit operating, observe where the fine gray
lines on the displacement sticker meet. This point
will be higher or lower as the displacement changes.
Opposite the point where they meet, read amount
of displacement.
FIGURE 2
FIGURE 3
Tie bar Rear tuning
spring stack
HD36C Tuning
The following general rules, which apply only to
the feeder operating ideally on the “normal” side
of its “tuning curve,” should be borne in mind when
making tuning adjustments to increase or decrease
the displacement:
1. To DECREASE the tray displacement,
INCREASE the stiffness of the tuning springs.
2. To INCREASE the tray displacement,
DECREASE the stiffness of the tuning springs.
If decreasing or increasing the tuning spring stiffness
has an opposite effect, it means that the spring
stiffness is not great enough, and that the unit is
operating on the “opposite” side of its tuning curve.
The spring stiffness should be increased until the
behavior is in accordance with rules 1 and 2.
The unit can then be properly tuned to the desired
displacement. At no time should the displacement
exceed the value indicated on the name tag.
HD36 Tuning
The following general rules, which apply only to
the feeder operating ideally on the “normal” side
of its “tuning curve,” should be borne in mind when
making tuning adjustments to increase or decrease
the displacement:
1. To DECREASE the tray displacement,
DECREASE the stiffness of the tuning springs.
2. To INCREASE the tray displacement,
INCREASE the stiffness of the tuning springs.
If decreasing or increasing the tuning spring
stiffness has an opposite effect, it means that
the spring stiffness is great enough that the unit
is operating on the “opposite” side of its tuning
curve. The spring stiffness should be reduced until
the behavior is in accordance with rules 1 and 2.
The unit can then be properly tuned to the
desired displacement.
Tuning Spring Stiffness
As a guide to the stiffness of individual tuning
springs, each spring is marked with a code number,
i.e., 5-27. The first number (5) is the number of
fiberglass plies in the spring. The following number
(27) indicates the relative stiffness of the spring;
the higher this number, the stiffer the spring.
The total stiffness of the tuning spring stack is the
sum of the relative stiffness numbers. By various
combinations of different ply springs having different
relative stiffnesses, practically any desired total
stiffness can be obtained.
Displacement sticker
,
5/32"
3/16"
7/32"
This is how the circles
would look if the tray
deflection were
3/16" (4.7 mm)
1/8"

6
Operation &
Maintenance (cont.)
Tuning For Non-Standard Trays
(Note: See “Special Trays and Attachments”)
If it is necessary to tune the unit to an off-size or
non-standard tray, follow this procedure:
1. Attach the tray, making sure that all lockwashers
are in place and the fasteners tight per the
Table 1 torque values.
2. Energize the unit at the nameplate voltage
and frequency.
3. During tuning, if a hammering or striking noise
appears during warm-ups or if such a noise
occurs when the unit is turned off and on quickly,
the displacement is well in excess of normal.
Whether striking or not, if the displacement
exceeds the normal range for that particular size
of tray (see Tuning Guide-General Information),
it must be reduced by substituting tuning springs
until approximately normal displacement is
attained at full voltage. Then use the controller
for fine or variable control of displacement
and feed rate.
Tuning For Different Conditions of
Tray Loading
HD36 with Eriez-built trays are factory tuned for
maximum displacement (approximately .120 to
.125 inches [3.0 mm to 3.2 mm]) with light loading
(light head load, light materials, limited depth of
flow of heavier materials). Ordinarily this tuning
will not need to be changed. In no case should the
unit be permitted to deflect more than .125 inches
(3.2 mm) without load. The HD36C is designed
to operate consistently under higher material
load conditions. The HD36 is more susceptible to
dampening when material loads are excessive.
Gap spacers
FIGURE 4
FIGURE 5
Air gap - Adjust to .090
Repairs
Coil Replacement
Refer to the Parts List Drawing and Figs. 4, 5, 6 & 7.
The following procedure should be followed in
removing and replacing the electrical assembly, which
includes the coil:
1. Remove both nameplates and insert the two gap
spacers (furnished with the unit) between the
E-frame center leg and the two armature pole
pieces (see Figure 4 & 5).
2. Remove, in order, the bolts securing the upper
end of the rear tuning spring stack to the tiebar.
Lift the tray-tiebar-lever assembly away from the
body housing (see Figure 6).
3. Remove the bolts securing the electrical assembly
to the body housing and lift the assembly out of
the body housing (see Figure 7).
AIR GAPS - ADJUST TO .093" (2.4 MM)
CAUTION
A small amount of striking during tuning is
permissible, but must not be allowed during
regular operation since damage to the feeder
can result.
HD36C will not
include lever or
elastomers

Vibratory Feeder: Model HD36 & HD36C
7
4. If the coil is defective, the entire E-frame
assembly including the coil must be replaced
(order from Eriez parts list).
5. In reassembling the unit, first center the armature
at the bottom of the body cavity; then insert the
E-frame into the body cavity, making sure that
the center leg enters the space between the
armature pole pieces. Insert the bolts securing
the electrical assembly and fasten only
finger tight.
6. Place the tray-tie bar assembly into its
original position and replace, in order, the bolts
securing (A) the lower end of the tiebar to the
armature adapter, and (B) the upper end of the
rear tuning spring stack to the tiebar. Make sure
that all tuning spring spacers are in place and
that all bolts are properly torqued as specified
in Table 1.
7. Loosen the electrical assembly bolts slightly and
roughly center the E-frame center leg between
the pole pieces. Insert the two spacers between
the E-frame center leg and the pole pieces and
adjust the electrical assembly forward or
backward until both spacers move freely in the
gaps. Tighten the electrical assembly plate and
replace the nameplates.
Spring Change or Replacement
Refer to the Parts List Drawing and Figure 8.
Although the non-metallic springs used in the Feeder
have outstanding life characteristics, failure may
eventually occur, especially if the displacement is
greater than normal. The symptoms of such failure
will be:
1. Erratic behavior of the unit.
2. Greatly reduced displacement.
3. Loud internal “striking” sound.
If spring failure is suspected, the rear tuning spring
stack should be removed after first inserting the
two gap spacers between the center leg of the
E-frame and the two pole pieces (Figure 4 and 8).
The purpose of this is to hold the tiebar or tray-
tiebar assembly in position while the tuning springs
are removed.
FIGURE 6
FIGURE 7
Tie bar
Rear
spring
stack
Electrical assembly
Coil
Armature
adapter
Diaphragm
Body housing
E-frame

8
Repairs (cont.)
If after inspection of the rear tuning spring stack,
the front stack is suspected, use the ARMATURE
REPLACEMENT procedure as a guide for
re-assembly with special attention to the washer
shaped spacers between the spring bar and
armature.
Carefully examine each tuning spring for signs of
delamination or breakage, especially in the area
next to the spring shims. A failed spring can be
recognized by the appearance of the spring surface.
If this surface is discolored or has a patchy whitish
appearance, perhaps accompanied by surface
burying or other irregularity, the spring is defective
and should be replaced with a new spring ordered
from the parts list.
ARMATURE REPLACEMENT
Refer to the Parts List Drawing and Figs. 4, 5, 6 & 7.
CAUTION: This unit contains Rare Earth Magnets.
Strong magnetic fields are present at assembly.
Prolonged striking may damage the armature to an
extent that it will have to be replaced. If this should
become necessary, order a new armature from the
parts list and begin replacement by following the
same instructions as for coil replacement.
1. Continue by removing in order the bolts securing
the elastomer diaphragm clamp to the body
housing.
2. Loosen slightly but do not remove the upper end
of the front tuning spring stacks to the spring bar
and the spring bar to the armature.
3. Loosen the bolts securing the lower end of the
spring stacks to the body housing leaving 1-2
threads in the body housing. Carefully slide the
spring stack and the armature assembly back
to the bolt heads and remove the bolts from the
body housing. (Do not remove bolts from the
spring stacks).
4. Remove the armature and spring stack assembly
by grasping the spring stacks and sliding it
through the opening in the body housing. NOTE:
use a downward pressure when removing this
assembly to keep the magnetic poles of the
armature from coming in contact with the body
housing when going through the opening.
5. Stand the armature and spring stack assembly
on a non-magnetic surface (I.E. wooden table) as
shown in Figure 9. NOTE: Keep armature away
from any steel parts and surfaces.
CAUTION
Make sure that all of the fasteners in the assembly
are tight or torqued to spec at all times. Periodic
checks for tightness should be made to insure
against possible malfunction or damage due to
loose parts.
Part Bolt Size Torque
m-kgs ft-lbs
Rear Spring Bolts M8-1.25 3.0 22.0
Front Tie Bar Bolts M8-1.25 3.0 22.0
Front Spring Bolts M8-1.25 3.0 22.0
Electrical Assembly Bolts M8-1.25 3.0 22.0
Diaphragm Bolts M8-1.25 3.0 22.0
Tray Bolt M8-1.25 3.0 22.0
Elastomer Nut M12-1.75 7.4 53.5
Table 1
Torque Chart HD36/HD36C
FIGURE 8
Gap spacers
Rear
spring
stack
Note: HD36C does
not include link
bars or elasteners

Vibratory Feeder: Model HD36 & HD36C
9
• Tightenleverarmassembly.
(Torque - see Table 1).
• Checkallfasteners.
(Check torque - see Table 1).
The Hi-Vi Magnetic Drive Circuit
Old-style electromagnetic equipment has an
inefficient attract-release type operation, where
a mass mounted on springs is attracted by a DC
electromagnet and returned to its original position
solely by the springs. The new Hi-Vi method
incorporates a lifetime permanent ceramic magnet
and is operated directly from an alternating
current line.
In the Hi-Vi method, the spring-mounted mass is
alternately both attracted and repelled by an AC
electromagnet assisted by the springs.
Intermeshing a fixed polarity permanent magnet with
an alternating polarity AC electromagnet eliminates
the rectifier since you would have an alternating
attracting and repelling force as the polarity of the
electromagnet alternated.
It will be noted that the pole pieces of the permanent
magnet are intermeshed in the air gaps of an
electromagnet. The polarity of the permanent magnet
is fixed; the polarity of the electromagnet alternates
at the line frequency. We have shown the polarity of
the electromagnet as it would exist on one side of the
sine wave. Note that both poles of the permanent
magnet are being attracted toward the unlike
electromagnet poles. They are also being repelled in
the same direction by the like electromagnet poles.
This results in four forces accumulating to drive the
armature in the same direction. It also results in
closing the magnetic circuit through the electromagnet
providing a magnetizing effect on the permanent
magnet on each side of the sine wave. The
demagnetizing force is very minor for the attracting
force, and the magnetic lines of flux would much
prefer to be attracted than repelled. This always tends
to place the permanent magnet in a magnetizing
circuit regardless of where the AC current is on
the sine wave. As the polarity of the electromagnet
changes, all of the forces are reversed and the
permanent magnet armature is driven in the
opposite direction.
6. Loosen the bolts securing the spring stacks to the
armature and remove the spring stacks with the
bolts intact. Retain the washer shaped spacers
located between spring bar and armature. Note
the position of the elastomer diaphragm when
reassembling.
7. Center washer shaped spacers on tapped holes
of the armature. (Hint: using an instant adhesive
will keep the washers and elastomer diaphragm
in position while reassembling.) Position
elastomer diaphragm on the armature as shown
in Figure 10. Reverse the above procedure to
reassemble the unit.
8. Insert armature and diaphram assembly through
opening in front of base casting as shown in
Figure 11.
9. Final assembly as follows:
• CheckthattheelectricalE-frameand
armature assemblies are positioned with
gap bars provided. (Hand tight).
• Attachthetiebartotherearofthebody
housing using the existing rear tuning spring
stack, and bolts. (Tighten).
• Attachleverarmassembly.(Handtight).
(HD36 only).
• Connectthetiebartothefrontofthe
armature adapter. (Torque - see Table 1).
• Checkclearances.(Gapbars).
• Tightenfrontspringstack.
(Torque - see Table 1).
• Tightenrearspringstack.
(Torque - see Table 1).
• TightenelectricalE-frameassembly.
(Torque - see Table 1).
FIGURE 9 FIGURE 10
FIGURE 11

10
Repairs (cont.)
Varying and unstable line frequency has a diverse
effect on vibratory feeders because they are
tuned mechanical devices, designed for 40 cycle
operating frequency. Shifts in the operating point
due to changes in frequency (+ or -1 cycle) can
cause higher than normal spring stress, striking and
high line currents which can cause drive and tray
failure. When operating from portable engine-driven
power plants, be certain that the engine is up to
speed and all other loads are started and at running
speed before starting the electromagnet feeder.
The feeder should always be stopped first when
the engine-driven power plant is shut down.
FIGURE 12
N S N NS
AC
POWER
SUPPLY
POTENTIOMETER
ELECTRO-MAGNET
ARMATURE CONNECTED
TO SPRINGS AND
MOVING MASS
PERMANENT
MAGNET
CAUTION
Operation from portable engine driven
power plants.