Escalator Repair

& REBUILD

THEORY OF OPERATION

Prior to attempting repair or adjustment of the escalator it is important to understand its purpose and function.

The escalator ac ce pts the cdin thereby allows the mechan- ism to be operated.It is designed to a cc ep t the correct denomination, reject or not accept the wrong denomination, provide a visual indication of coins recently played and then

deposit the coin into the appropriate area. (The coin tube).

The mills type escalator functions by the following sequence of actions:

. Coins of the corre ct size or smaller can be

inserted in the hole.

The coin slides down a path by gravity past a magnet assembly which has been adjusted to allow the correct size coin to pass.

Smaller coins are sent or "shunted" to a different path and fall out through a space provided on the

far left side(facing the escalator front).

The magnet also causes ferrous slugs to be "shunt-

ed" down the different path .

. The correct coin howeve r, passes the magnet,con- tinues on the correct path and lands directly in front of the finger of the coin detector lever

(P figure 1) . ,

The coin is prevented from continuing across the escalator by the first "tooth" of the coin hold- ing bar (E).

A small cut in the face plate directly in front of the coin detector finger also acts to reject smaller coins.They are pushed out thru the front by the finger and slide down the slug chute cover assembly (AA).

If when the coin detector lever is moved forward by the coin detector operating l ever the finger feels a coin, and if the length of the finger is adjusted correctly,the mechanism will be al low-

ed to operate.

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-3-

If the machine is not used extensively twice a year is

suggested.

The escalator may be cleaned by washing with a brush using trichloraethylene or a s i m i lar solvent.It may then be brushed with a degreasing detergent and washed off with very hot water.The escalator should be dried with forced a ir or freon TF spray and lubricated.

LUBRICATION:

The entire rear of the e s ca l ato r may be sprayed with a good machine oil such as 3 in 1 spray, or a drop of oil placed on every moving j o i nt .Each moving part should then be move d to insure free movement. A slight appli- cation of pe t r o le um jelly or lubriplate may be applied

between the coin advance bar (D) and the body of the

escalator.The c o in track should be kept free of lub-

ricant as i t can cause "hanging"?

ALL SLIDING OR PIVOTING PARTS MUST BE WO RK I N G FREELY MAGNET ADJUSTMENT:

The magnet is factory adjusted however, should it ever

be necessary to replace or the magnet,first move

it over to t he right j ust to block the passage of a coin.Fasten it loosely in place . Wh ile the coin

is still touching the Magnet, move t he Magnet slowly to

the left until the coin passes through with ease . Tighten the screw which holds the Magnet in place. Check your adjustment by playing a steel slug to see if it is drawn

to the return track.

TROUBLESHOOTING ESCALATOR PROBLEMS

Troubleshoo t ing t he escalator is divided i nto two parts.

The first part establishes the escalator to be operative, or inoperative, separately from the mechanism.The sec- ond part describes problems that may occur when the es- cal ator is activated by the mechanism.

CHECKOUT OF THE ESCALATOR WITHOUT MECHANISM

• Remove the mechanism from the cabinet.

While observing the escalator, deposit a coin and see if it lands j ust in front of the detector bar finger.

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-5-

Establish this operation in your mind.Observe each function as it occurs and establish the 1function of each part. By now, you s houl d understand the escalator.

Most problems occur when the escalator is interfaced with the mechanism. The following paragraphs establish problems that may occur when the escalator is worked with the mechanism.

TROUBLESHOOTING THE ESCALATOR COMBINED WITH THE MECHANISM

. Visually inspect'the mechanism after insertion of the mechanism into the cabinet.Assure that:

. The coin advance bar operating lever(A figure

3)is "Hooked" over the lip of the coin ad-

vance bar lever (F, Fi g ure 1).

The coin detector lever, (P Figure l) is not being pushed forward by the coin detector operating lever(C,Figure 3).

The coin detector operating lever (C Figure

3) is not rubbing against the coin detector

lever ( P,figure 1) end guide .

The check detector operating arm (B,Figure

3)is not p ushing against the check detector lever (S, Figure 1)

The next step requires activation of the mechan- ism however, a technique to stop the timing cycle will be applied to slow down the cycle. This

will facilitate observation of the sequence of

events .

• Place a screwdriver handle,or similar item

next to the clock fan to stop its rotation .

. I ns ert a coin in the escalator

From the rear? observe that the coin lands directly in front of the coin detector finger.

-7-

Did the coin advance b ar locking lever lock the

coin advance bar into the left position?

If the answers to the above questions was yes, continue on to the following steps.If the answer was no, go back and review the sequence of oper- ation to determine where the problem may l ay .

. Remove the screwdriver handle from the clock fan and use a finger to reduce the speed of the clock. As the mechanism cycle continues, observe the following:

. The coin advance bar operating lever strikes

the pertruding bar of the coin bar release lever

(H. Fig 1) and moves it up.

The hook next pushes up on the pertruding bar of the coin advance bar locking lever releas- ing the coin advance bar .

. The coin advance bar slides or snaps back to

the right hand position .

• With the hook completely returned to its upper. position (upon completion of the mechanism cycle) the coin detector bar and check detector lever

are fully against their back stop.

If all the properly. repeat the ing;

above actions occur, the escalator is working However. if the action does not seem proper, cycle as outlined above and observe the follow-

.As the coin advance bar operating lever rises, observe if there is resistance c au se d by rubbing against the inside handle lever if so,this must be resolved •

• The operating parts on the side of the mechanism should be lubricated.If lubrication has just been accomplished and the machine ha? been out of

use for a prolonged period of time, the lubrication

mus t be "worked in" by repeated use.

-7-

Did the coin advance bar locking lever lock the coin advance bar into the left position?

If the answers to the above questions was yes, continue on to the following steps. I£ the answer was no, go back and review the sequence of oper- ation to determine where the problem may lay .

• Remove the screwdriver handle from the clock fan and use a finger to reduce the speed of the clock. As the mechanism cycle continues, observe the

following:

The coin advance bar operating lever strikes

the pertruding bar of the coin bar release lever

(H. Fig 1) and moves it up.

The hook next pushes up on the pertruding bar of the coin advance bar locking lever releas- ing the coin advance bar .

• The coin advance bar slides or snaps back to

the right hand position .

• With the hook compl¢tely returned to its upper- position ( upon completion of the mechanism cycle) the coin detector bar and check detector lever

are fully against their back stop.

If all the properly. repeat the ing;

above actibns occur, the escalator is working However, if the action does not seem proper, cycle as outlined above and observe the follow-

.As the coin advance bar operating lever rises, observe if there is resistance caused by rubbing against the inside handle lever if so, this must be resolved •

. The operating parts on the side of the mechanism should be lubricated. If lubrication has just been accomplished and the machine has been out of

use for a prolonged period of time, the lubrication

must be "worked in" by repeated use .

-5-

Establish this operation in your mind.Observe each function as it occurs and establish the function of each part.By now, you should understand the escalator.

Most problems occur when the escalator is interfaced with the mechanism. The following paragraphs e s t ab l i s h problems that may occur when the escalator is worked wi th the mechanism.

TROUBLESH
OOTING THE ESCALATOR COMBINED WITH THE MECHANISM

. Visually inspect the mechanism after insertion

of the mechanism into the cabinet.Assure that:

. The coin advance bar operating lever (A figure

3)is "Hooked" ove r the lip of the coin ad-

vance bar lever(F, Figure 1).

The coin detector lever, (P Figure 1)is not being pushed forward by t he coin detector operating lever (C,Figure 3).

The coin detector operating lever(C Figure

3) is not rubbing against the coin detector lever ( P,figure 1) end guide.

The check detector operating arm (B,Figure

3)is not pushing against the che ck detector

lever (S, Figure 1)

The next step requires activation of the mechan- ism however, a t e chni que to stop the timing cycle will be applied to slow down the cycle. This

will facilitate observation of the sequence of events .

• Place a screwdriver handle,or similar item

next to the clock fan to stop its rotation .

.Insert a coin in the escalator

From the rear, observe that the coin lands

directly in front of the coin detector finger.

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1

I

- 3 -

If t he machine is n ot used extensive ly twice a year is suggested.

The escalator may be cleaned by washing with a brush using trichloraethifl ene or a similar solvent. It may then be brushed with a degreasing detergent and washed off with very hot water. The escalator should be dried with forced air or freon TF spray and lubricated.

LUBRICATION:

The entire re ar of the escalator may be sprayed with a good ma ch i ne oil such as 3 in 1 spray, or a drop of oil placed on every mov i n g joint.Each moving part should then be moved to insure free movement. A slight ap pl i - cation of petroleum jelly or l ubrip l ate may be applied

between the coin advance b ar (D) and the body of the

escalator.The coin track should be kept free of lub-

r i cant as it can cause "hanging".

ALL SLIDING OR PIVOTING PARTS MUST BE WORKING FREELY MAGNET ADJUSTMENT:

The magnet 1s factory adjusted however, should it ever

be necessary to replace or a d j us t the magnet,first move

it o ver to the right just far enough to block the passage

of a coin.F as te n it loosely in place.Whi le the coin

is still touching the Magnet, move the Magnet slowly to

the left until the coin passes t h ro u gh with ease . Tighten the screw wh i ch hol ds the Magnet in p l a ce .Check your adjustment by playing a steel slug to see if it is drawn

to the return track.

TROUBLESHOOTING ESCALATOR PROBLEMS

Troubleshooting the e s c a l a t or is divided into two parts. The first part establishes the e s c al a tor to be operative, or inoperative, separately from the mechanism.The sec- ond part describes prob lems tha t may o cc ur when the es- calator is activated by the mechanism.

CHECKOUT QF THE ESCALATOR WITHOUT THE MECHANISM

. Remove the mechanism from the cabinet.

While o bs e rv i n g the escalator, de p o s it a coin and

see if it lands just in front of the detector bar

finger.

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C D

F ic., vr-e. 3

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0

THEORY OF OPERATION

Prior to attempting r ep a ir or adjustment of the escalator it is important to understand its pu rpos e and function.

The escalator accepts the coin thereb y allows the mechan- ism to be operated. It is designed to accept the correct denomination, reject or not accept the wrong denomination, provide a visual indication of coins recently played and then

deposit the coin into the appropriate area. (The coin tube).

The mills type escalator functions by the following sequence

of actions:

Coins of the correct size or smaller can be

inserted in the ho le.

The co i n slides down a path by gravity past a magnet assembly which has been adjusted to allow the correct size coin to pass.

Smaller coins are sent or "shunted" to a different path and fall out through a space provided on the far left side( facing the escalator front).

The magnet also cause s ferrous slugs to be "shunt-

ed" down th e different path .

• The correct coin however, passes the magnet, con- tinues on the correct path and lands directly in front of the f inger of the coin de tec t o r lever

(P figure 1) .

The coin is prevented from continuing across the

escalator by the first

ing bar (E).

t o o thof the coin hold-

A small cut in the face plate directly in front of the coin detector finger also acts to reject smaller coins. They are pushed out thru the front by the firtger and s li de down the slug chute cover assembly (AA).

If when the coin dete c t o r lever is moved forward by the coin de t e c tor operating lever the finger feels a coin,and if the length of the finger is adjusted correctly, the mechanism will be allow- ed to operate.

EscalatorRepair

& REBUILD