Eriez HS-5 Manuel

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

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.

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

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.

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

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.

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

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

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

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.

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.

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