Creative Engineering ROCK-A-FIRE EXPLOSION - Page 253

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allowable

for

dim

position.

If

no

change

takes

place,

send

for

a

new

Houselight

Dimmer

Board.

Warning

-

remove

the

Show

Control

Board

before

jumping

the

£in

to_ground

on

the

Houselight

Dimmer

Board,

or

you

may

destroy

the

Show

Control

Board.

E.

Drapery

Problems

Symptoms

such

as

curtains

not

opening

or

closing,

can

both

be

considered

in

the

same

procedure.

Simply

isolate

the

problem

by

the

location,

whether

SR -

CS

-

or

SL

and

begin

your

trouble-shooting

steps

from

the

identification.

First,

manually

override

the

control

with

the

push

buttons

on

the

stage,

and

see

if

that

works.

If

it

does,

then

you

have

already

determined

that

the

Drapery

Motor

Controls

are

good.

Locate

the

proper

terminals

(marked

X)

in

the

RAF

100

Box

,

and

check

the

voltage

for

110

A.C.

Be

careful

-

live

voltage

!

Check

the

Motor

in

the

circuit

as

well

as

the

relays

and

the

limit

switches

because

either

of

these

may

cause

the

Drapery

Motor

not

to

operate,

see

pages

5-077

thru

5-079.

Limit

Switches

The

Limit

Switches

are

mechanical

devices

which

will

allow

you

to

control

the

number

of

revolutions

a

motor

will

travel.

When

either

of

the

contacts

are

closed

the

motor

will

work.

If

both

contacts

are

open,

it

will

not

work.

The

Limit

Switches

are

adjusted

by

use

of

the

small

knob

on

the

side

of

the

switch

housing.

It

is

very

important

that

when

the

motor

is

in

operation

this

knob

be

in

the

center

or

neutral

groove.

Limit

switch

adjustment

is

as

follows:

1.

Loosen

the

set

screws

on

the

master

carrier.

2.

Turn

the

adjustment

screw

until

both

contacts

are

open

(Instructions

are

on

the

knob).

3.

Find

the

point

at

which

one

of

the

contacts

closes

(It

doesn't

matter

which

one).

4.

Close

the

selected

contact

2

1/2

revolutions

(3

revolutions

for

center

stage).

The

motor

is

now

roughly

adjusted.

5.

Remember

to

place

the

adjustment

knob

back

into

neutral.

6.

Loosen

the

set

screws

in

the

top

of

the

master

carrier

(mules),

so

that

the

cable

may

pass

freely

through

the

mule.

7.

Test

the

adjustments

cautiously

with

one

hand

on

the

stop

button.

8.

Fine

tune

the

adjustments

by

marking

the

cable

with

tape

or

a

marking

pen,

and

use

this

to

insure

that

the

cable

travels

the

proper

distance.

9.

Once

satisfied

that

the

motors

are

properly

adjusted,

re-tighten

the

set

screws

on

the

master

carrier.

Make

sure

the

master

carriers

are

in

the

correct

position.

Note:

The

Limit

Switch

may

be

removed

from

the

motor

in

the

following

manner:

Disconnect

power.

Remove

flex

attached

to

the

Limit

Switch.

Remove

the

chain

drive.

Unfasten

three

bolts,

which

attaches

Limit

Switch

to

the

Motor

housing.

Limit

Switch

repair

should

not

be

attempted.

s-o1o