Maytag 56326 Dokumentacja Pobierz pdf (Strona 28)

LEAK

TESTING

YODER

LOOP

The

following

general

information

ex-

plains

several

methods

used

in leak

test-

ing the

yoder

loop.

The

yoder

loop is

routed

in the front

cabi-

net

flange at

the top and

sides.

The

yoder

condenser

loop warms

the front

of

the ca-

binet

and

thus

reduces

the formation

of

condensation

on

the cabinet

front.

By

transferring

heat

to the cabinet

front, the

loop helps cool

the condensing

system.

Since

the

yoder

condenser

loop cannot

be

reached

for leak

testing, it

is impossible

to

check

in the normal

manner.

Instead,

it

must be

disconnected

from

the system

and

checked

separately.

NOTE: BE SURE

A LEAK IS

NOT PRESENT

IN ANY EXTERNAL

TUBING OR

JOINT

BE-

FORE

PERFORMING

THE

FOLLOWING

TESTS.

USING

PRESSURE

METHOD

To test for leaks

in the

yoder

loop

tubing,

a

pressurized

test using

the

following

equipment

is required,

A.

An access

fitting.

B. A cylinder

of dry

nitrogen.

C. Pressure

regulator.

D. One

gauge.

E. Line valve

and tubing.

The

access

fitting should

be

prepared

as

follows:

1. Solder

the

copper tubing

(C)

to the

adaptor

(A).

2. Assemble

all

parts

to

the

"brass

tee"

(B)

using

a sealant

such

as

"Leak

Lock"

to assure a

leak-tight

joint.

3. Seal

the end of

the copper

tube bY

crimping

and silver-soldering.

SOLDER

ADAPTER

TO

N,IALE

PIPE

@

1

/8" MIPT

x

1/4"

filSAE

WITH SCHFADER

VALVE

VALVECAP

@

\

A\\

\y\\

tf

trfft

4.

5.

Apply

200 lbs.

pressure

at

the

Schr.ader

valve and

leak test

the ac-

cess fitting

with a soap

solution.

lf

there

is no leak,

cut the crimped

end

off

the

tube

(C).

PRESSURE

REGULATOR

LINE

VALVE

.\

TESTING

YODER

LOOP

Top Mount Models

1. Disconnect unit

f rom

power

source.

2. Install a service

valve on the

process

tube

and vent

the refrigerant

outside.

GAUGES

3-8

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