Eriez HS-5 Manual

1
Installation, Operation
and Maintenance
Instructions
ERIEZ MAGNETICS HEADQUARTERS: 2200 ASBURY ROAD, P.O. BOX 10608, ERIE, PA 16514-0608 U.S.A.
WORLDAUTHORITY INADVANCED TECHNOLOGYFOR MAGNETIC, VIBRATORYand METAL DETECTIONAPPLICATIONS
®
VM-3805B
VIBRATORY
FEEDER
MODEL HS-5

2
Introduction
This manual details the proper steps for installing,
operating and maintaining the Eriez HS-5 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 Vibra-
tory Feeder assistance.
©2001 ERIEZ MAGNETICS ALL RIGHTS RESERVED

3
Table of Contents
ERIEZVIBRATORY FEEDER - MODEL HS-5
INSTALLATION .....................................................................................................4
Mounting .........................................................................................................4
Drives without Trays........................................................................................4
Electrical Connections.....................................................................................4
OPERATION AND MAINTENANCE......................................................................5
Tuning Guide...................................................................................................5
Tuning by Plunger Adjustment ........................................................................6
Tuning by Replacing Springs ..........................................................................6
Tuning for Non-standard Trays........................................................................7
Tuning for Different Conditions of Tray Loading..............................................7
REPAIRS...............................................................................................................7
Spring Replacement........................................................................................7
Coil Replacement............................................................................................8
The Hi-Vi Magnetic Drive Circuit .....................................................................9
TROUBLESHOOTING ........................................................................................10
PARTS ................................................................................................................12

4
Installation
MOUNTING
ThisHi-Vimodel shouldbe mountedon aflat, stable
surface in one of the two following ways:
Positioned and Fastened
Fasten the unit to the desired surface with bolts or
screws of proper size through the standard rubber
isolators on the base. Use flat washers under the
bolt heads.
Positioned but Not Fastened
Install headless stud pins of proper size into the
rubber isolators. Set the base (with the standard
rubber isolators) into holes in a base plate. If the
drive unit is equipped with the optional coil spring
isolators, spring seats must be used.
DRIVES WITHOUTTRAYS
Drive units are often supplied without trays for use
with trays, chutes or tracks supplied by others. In
this case the chute, track, tray or other equipment
is bolted to the tray mounting plate supplied with
the drive unit. Maximum tray weight for each drive
is 3.0 pounds (1.36 kg). Make sure the drive unit is
installed so the end containing the leaf springs is
facing the direction of material flow (see Figure 1).
The center of gravity of any components attached
to the drive unit should be as close as possible to
the drive unit’s drive line (see Figure 1).
ELECTRICAL CONNECTIONS
NOTE: The Eriez Vibratory Feeder is designed to
be operated from anAC source. It cannot be oper-
ated from a DC source.
All wiring should conform to all applicable elec-
trical 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 theblackandwhitewiresinthefeeder
power cord to the power source or to the
terminals in the control box marked “Output”.
3. Connect the green wire to the ground or to the
lug provided in the control box.
4. Connect the power line to the terminals in the
control box marked “Line”.
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
electricallyin phase. Theblackwiresfromeach
power cord should be connected together and
the white wires connected together.
YOUARENOW READYTOSTARTYOURVIBRA-
TORY FEEDER.
FIGURE 1
CAUTION: Operation from portable engine
driven power plants.
Varying andunstable linefrequency hasan adverse
effect on vibratory feeders because they are tuned
mechanical devices, designed around either 50 or
60 cycle operating frequency. Shifts in the operat-
ing point due to changes in frequency cause higher
than normal spring stress, striking and high line cur-
rents. 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 electromagnetic feeder.
The feeder should always be stopped first when
the engine-driven power plant is shut down.

5
Operation and 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. Usually (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-tiebarassemblyandthebody,andfrombetween
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 con-
sulted before undertaking the design or construc-
tion of special trays. Do not modify either standard
or special trays as furnished by Eriez, or make at-
tachmentstothese trays withoutfirst consulting us.
Unauthorized modifications will void the warranty.
(See Standard Tray Specifications.)
TUNING GUIDE
General Information
Thetuningmeans isprovidedsolely for thepurpose
of mechanically tuning the unit, with its tray, to the
desired vibratory displacement at full voltage. HS-5
drive units supplied without trays are tuned by Eriez
for use with a three-pound (1.36 kg) weight. If
supplied with a tray, they are tuned for that specific
tray and should require no further adjustment.
However, if different trays or other components of a
system are used, or if a striking condition occurs, a
tuningadjustmentoftheairgap– thespacebetween
the two plungers – should be made using the
following procedures.
In normal operation at full voltage, the total
displacement for standard size trays, measured
at the back of the tray, is .110" to .120" (2.8 mm
to 3.0 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 for.
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 2).
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
DISPLACEMENT STICKER

6
Operation and Maintenance (cont.)
TUNING BY PLUNGER ADJUSTMENT
1. With the tray mounted, loosen or remove the
hex nut at the back of the unit.
2. Inserta screw driverinto the slotof the plunger
(see Figure 3) and turn it clockwise until the
plunger hits the armature.
3. Back out the plunger by turning it counter-
clockwise three full turns.
4. Replace and tighten the hex nut.
5. Check the deflection. See “How to Measure
Displacement”.
EriezHS-5units operatewitha maximumtraystroke
between .110" and .120" (2.8 mm and 3.0 mm). If
the deflection sticker reading is more or less than
this, further tuning can be done by turning the
adjustableplunger. Todecreasedeflection, turn the
plungercounter-clockwise;toincreasedeflectionturn
theplungerclockwise. Ifthisairgapadjustmentdoes
notproduce the desiredperformance, furthertuning
by replacing springs is necessary.
TUNING BY REPLACING SPRINGS
To obtain the maximum desirable deflection, it
may be necessary to add, subtract or substitute
tuning spring leaves in the tuning spring stack
(see Figure 4) at the front of the unit.
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
FIGURE 3
FIGURE 4
when making tuning adjustments to increase or
decrease the displacement:
1. To DECREASE the tray displacement,
DECREASEthe stiffnessof thetuning 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.
As a guide to the stiffness of individual tuning
springs, each spring is marked with a code num-
ber-example, 5-27. Thefirst number(5) isthe num-
ber 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 differ-
ent relative stiffnesses, practically any desired to-
tal stiffness can be obtained.
When tuning is completed, make sure the adjust-
able plunger lock nut is tightened down.

7
TUNINGFORNON-STANDARDTRAYS
(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. Attachthetray,makingsurethatalllockwashers
are in place and the fasteners tight.
2. Energize the unit at the nameplate voltage
and frequency.
3. (a) During tuning if a hammering or striking
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 a tuning spring leaf or leaves of
displacement and feed rate.
(b) During tuning if the displacement at full
voltage is below the nominal range for that
particular size tray, and greater displacement
is desired, increase the tuning spring stiffness
by substituting leaves of greater stiffness or
by adding more leaves.
TUNING FOR DIFFERENT
CONDITIONS OFTRAY LOADING
Units with Eriez-built trays are factory tuned for
normal displacement (approximately .110" to .120"
[2.8 to 3.0 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, however, should the unit
be permitted to deflect more than .120" (3.0 mm)
without load.
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.
Operation and Maintenance (cont.)
Repairs
SPRING CHANGE OR REPLACEMENT
Although the non-metallic springs used in the Feeder
have outstanding life characteristics, failure may
eventuallyoccur,especiallyifthedisplacementisgreater
than normal. The symptoms of such failure will be:
1. Erratic behavior of the unit, or
2. Greatly reduced displacement.
If spring failure is suspected, the tuning spring stack
shouldberemovedbyremovingthesixboltsattaching
it to the body and the tie bar (see Figure 4).
Carefully examine each tuning spring for signs of
delamination or breakage, especially in the area next
to the spring shims. Afailed spring can be recognized
bytheappearance ofthespring surface. Ifthissurface
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.
NOTE:After any spring change or replacement, it
is very important that the moving plunger be
checked for alignment in the bore of the body
casting. To do this, remove the coil through the
rear of the unit. Now inspect the position of the
plunger. If the plunger is off center in the bore
hole, first loosen the six spring bolts again, then
insert a screwdriver in the narrow gap and pry the
plunger until it becomes centered. Leave the
screwdriver in place and tighten the six spring
bolts. The plunger is now correctly centered and
unit can be reassembled

8
Repairs (cont.)
If the feeder still exhibits signs of spring malfunction
after the tuning spring has been checked and
replaced,checkthetwocylindricalelastomersprings
(see Figure 5).
1. First, remove the spring lever arms and the
tuning spring stack.
2. Lay the unit on its side, making sure that the gap
spacers stay in place, and use a small hammer
and flattened round bar or dowel to tap the
elastomer spring out of the body housing. Next,
support the tiebar with a small block between the
tiebar and work surface, and tap the spring out of
the tiebar.
3. Carefully examine both springs for signs of
failure and replace if such signs are found. A
failed spring will exhibit one or more of the
following characteristics:
(a) Looseness of the spring combined with signs
of rubbing or abrasion at the outer surface of
the cylinder. Looseness of the metal sleeve.
(b) Small crack in the elastomer around the end of
the metal sleeve, possibly with small abraded
particles of the elastomer present.
(c)Tackinessofthe elastomeraround themetal
sleeve and at the outer surface of the
cylinder, possibly with some outward
bulging of the elastomer.
FIGURE 5
4. Inreplacing theelastomersprings, laythe uniton
its side so that the chamfered ends of the spring
holes are up. After making sure that the holes
andtheirchamferedendsarecleanandfreefrom
obstructions, lubricate the elastomer spring with
a solution of water and 10% of liquid dishwasher
soap(neveruseapetroleumlubricant)andpress
them partly into place with the thumbs. Then tap
thespringsback into place,againusing the small
supportingblockbetweentiebarandworksurface.
Make sure that the springs go in straight and
protrudeequallyatbothendsofbothspringholes.
5. Replace the lever arms, tightening the two
fastening bolts securely.
COIL REPLACEMENT
The coil in a vibratory feeder may eventually fail due
to over-voltage or normal aging.
The following procedure should be followed in
removing and replacing the electrical assembly,
which includes the coil:
1. Remove the locking hex nut at the back of the
unit.
2. Remove the four bolts securing the backplate
of the electrical assembly to the body.
3. Lift out the electrical assembly. Unscrew and
remove the adjustable plunger (see Figure 6).
FIGURE 6

9
Repairs (cont.)
4. Screw the adjustable plunger into the
backplate of the new electrical assembly.
Place the coil over the plunger and slide the
assembly, with the power cord at the bottom,
into the feeder body (see Figure 7).
5. Replace the four bolts in the backplate, tune
the feeder as described in “Tuning by Plunger
Adjustment” and tighten down the locking
hex nut.
FIGURE 7
THE Hl-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.
NS NNS
AC
POWER
SUPPLY
POTENTIOMETER
ELECTRO-MAGNET
ARMATURE CONNECTED
TO SPRINGS AND
MOVING MASS
PERMANENT
MAGNET
FIGURE 8
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.
Itwill benoted thatthe polepieces ofthe 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
ononeside of thesinewave. 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
likeelectromagnet poles. This resultsin fourforces
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. Asthe polarityoftheelectromagnetchanges,
all of the forces are reversed and the permanent
magnetarmature is drivenin the oppositedirection.

10
Reduced or Low 12 5678 9 1314 16 19
Output
Noisy but Output 2 3 8 9 10 11 12 13
Okay
Noisy Certain 13 14
Periods Only
Completely 2 4 5 7 13 15 16
Inoperative
Operating But 23 5678910121314161719
Reduced Output
Output Okay 2 7 8 9 10 12 13 14
Too Much Noise
Gradual
Fading 5 7 8 9 10 13 19
Excessive 18
Tray Wear
Turbulent 10 17
Flow
Inconsistent 2 3 5 6 7 9 10 12 13 14 16 17 19
Output
Develop After Satisfactory Initial
Initial Operation Installation
Misapplication Tampering or Changing of Base or Tray Loose Spring Clamp or Tray Mounting Bolts Coil Failure Control Failure Incorrect Voltage Spring Failure Foreign Material Between Tray & Reaction Mass Incorrect Tuning Poor or Broken Weld on Tray Incorrect Factory Adjustment Sympathetic Vibration in Other Equipment In Contact with Other Equipment Line Voltage Variation Blown Fuse or Circuit Breaker Other Electrical Connections Shockmount Deterioration Corrosive or Abrasive Material Product Variation
NATURE OF
PROBLEM
TABLE 2. SERVICE CHART
Troubleshooting
1. Misapplication
Feeder too small. Product difficult or impos-
sibletohandle. Impossible temperaturesor at-
mospheres. Impossible dimensional require-
ments. Feeding requirements too precise or
excessive. Consult Eriez.
2. Tampering or Changing of Base or Tray
Improper disassembly, extensions, covers,
weights, screens or other modifications or
attachments may have affected performance.
Reassemble in accordance with printed in-
structions or consult Eriez.
3. Loose Spring Clamp orTray Mounting Bolts
Tighten all bolts.
4. Coil Failure
Replace coil or coil and E-Frame assembly.
Order from Eriez parts lists. Follow mainte-
nance instructions carefully.
5. Control Failure
Check for burned out powerstat or rheostat,
defective capacitor, defective switch, loose
wiring, defective transformer (if used). Order
new parts from Eriez. Possibility special con-
trol needed. Consult Engineering.
6. Incorrect voltage
Checknameplatespecificationsandlinevoltage.

11
7. Spring Failure
See maintenance instructions. Disassemble
forexamination. Tuningspringfailure willshow
up as white areas. Order new parts from fac-
tory and replace per instructions.
8. Foreign Material
Examine and remove foreign material.
9. Incorrect Tuning
See maintenance instructions. To decrease
displacement and output, use fewer or thinner
tuning springs. To increase displacement and
eliminate striking, use more or thicker tuning
springs.
10. Poor or Broken Weld on Tray
Check and correct.
11. Incorrect Factory Adjustment
Seemaintenanceinstructions(gapadjustments.)
12. Sympathetic Vibration in Other Equipment
Check and correct.
13. Contact with Other Equipment
Check and correct.
14. Line Voltage Variation
Check and install voltage regulator if necessary.
15. Blown Fuse or Circuit Breaker
Check for short circuits and correct.
16. Other Electrical Connections
Check all connections and correct.
17. Shockmount Deterioration
Check and correct.
18. Corrosive or Abrasive Material
May require special tray. Consult Eriez.
19. Product Variation
If product density, moisture content or other
characteristicsvary,customershould takeown
corrective measures.
Troubleshooting (cont.)

12
Eriez and Eriez Magnetics are registered trademarks of Eriez Manufacturing Co., Erie, PA ©2001 ERIEZ MAGNETICS ALL RIGHTS RESERVED
World Authority in Advanced Technology for Magnetic, Vibratory and Metal Detection Applications
HEADQUARTERS: 2200 ASBURY ROAD, P.O. BOX 10608, ERIE, PA 16514-0608 U.S.A.
Telephone [phone] • 800/345-4946 • Fax [phone] • International Fax [phone]
Web Site: http://www.eriez.com e-mail: [email protected]
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®
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