Specifications

3. Unsolder
the
yoder
loop
tubing
at
points
"A"
and
"8".
Top
Mount
Crimp and solder the
yoder
tubing at
point
"A".
Solder the
special access
fitting
to
tube removed
at
point
"8".
Pressurize the
system
to
250 lbs. with
the
dry nitrogen. Leak test the
joint,
using a soap solution.
Check the
pressure
gauge.
lf the
pres-
sure decreases,
a
leak
exists. lt may
be necessary to
allow up to 24 hours
to
pass
in order to
determine this. lf
a
leak
does
not
exist, reconnect the tub-
ing,
evacuate and recharge
the sys-
tem.
lf the
yoder
loop is
leaking, a
special
kit can
be
ordered
for installing
a
re-
sistance heater wire.
Complete in-
structions are included with the
kit. lt
is
not necessary to leave
the refriger-
ator inoperative while
you
order the
kit. You should reconnect
the system
excluding the
yoder
loop as follows:
Install
a
new
drier. lnstead
of connect-
ing it
to
point
"A",
connect it to
point
"B".
This will
exclude the
yoder
loop
from the refrigerant
system.
9. Evacuate
and recharge the system.
10.
Leak test
all
tubing
joints
and test run
the refrigerator.
11. Pinch
the
process
tube
and cut the
service valve
off
the tubing.
Solder the
joint
and check
for leaks.
TESTING
YODER
LOOP
Side-By-Side Models
1. Disconnect
unit f rom
power
source.
2. Install
a service valve on the
process
tube
and
vent
the refrigerant
outside.
3. Unsolder the
yoder
loop tubing
at
points
"A"
and
"8".
(see
drawing).
4.
Crimp and solder the
yoder
tubing
at
point
"A".
5. Solder the special
access
fitting
to
tube
removed at
point
"8".
6.
Pressurize the
system to 250 lbs.
with
the
dry nitrogen. Leak test the
joint
using
a
soap
solution.
7. Check the
pressure
gauge.
lf the
pressure
decreases, a leak exists.
lt
may
be
necessary
to
allow up to 24
hours
to
pass
in
order to determine
this.
lf a leak does not
exist, reconnect
the
tubing, evacuate
and recharge the
system.
lf
the
yoder
loop is
leaking,
a
special
kit
can be ordered for
installing
a
resistance
heater wire.
Complete instructions
are
included
with the kit. lt is
not necessary
to leave the refrigerant
inoperative
while
you
order the kit. You
should reconnect
the
system
excluding the
yoder
loop.
To
exclude the
yoder
loop,
connect com-
pressor
discharge
line directly to
conden-
ser by connecting the tubing
at
point
"A"
to
point
"8",
Suction
Tube
4.
5.
6.
7.
3-9