Scroll Compressor Replacement; Refrigeration System - Trane IntelliPak RA 20 Installation, Operation And Maintenance Manual

2. Straighten any bent coil fins with a fin comb.
3. For accessible areas, remove loose dirt and debris
from both sides of the coil. For dual row
microchannel condenser coil applications, seek
pressure coil wand extension through the local
Trane Parts Center.
4. When cleaning evaporator and reheat coils, mix the
detergent with water according to the
manufacturer's instructions. If desired, heat the
solution to 150° F maximum to improve its
cleansing capability.
I I m m p p o o r r t t a a n n t t : : DO NOT use any detergents with
microchannel coils. Pressurized water
or air ONLY.
5. Pour the cleaning solution into the sprayer. If a
high-pressure sprayer is used:
a. The minimum nozzle spray angle is 15 degrees.
b. Do not allow sprayer pressure to exceed 600 psi.
c. Spray the solution perpendicular (at 90 degrees)
to the coil face.
d. For evaporator and reheat coils, maintain a
minimum clearance of 6" between the sprayer
nozzle and the coil. For microchannel condenser
coils, optimum clearance between the sprayer
nozzle and the microchannel coil is 1"-3".
6. Spray the leaving-airflow side of the coil first; then
spray the opposite side of the coil. For evaporator
and reheat coils, allow the cleaning solution to
stand on the coil for five minutes.
7. Rinse both sides of the coil with cool, clean water.
8. Inspect both sides of the coil; if it still appears to be
dirty, repeat Steps 6 and 7.
9. Reinstall all of the components and panels removed
in Step 1; then restore power to the unit.
10. For evaporator and reheat coils, use a fin comb to
straighten any coil fins which were inadvertently
bent during the cleaning process.

Scroll Compressor Replacement

The compressor manifold system was purposely
designed to provide proper oil return to each
compressor. The refrigerant manifold system must not
be modified in any way.
N N o o t t e e : : Altering the compressor manifold piping may
cause oil return problems and compressor
failure.
Should a compressor replacement become necessary
and a suction line filter is to be installed, install it a
minimum of 16 or 25 inches upstream of the oil
separator tee. See Figure 63, p.
RT-SVX063E-EN
111.
S S e e r r v v i i c c e e a a n n d d M M a a i i n n t t e e n n a a n n c c e e
I I m m p p o o r r t t a a n n t t : : Do Not release refrigerant to the
atmosphere! If adding or removing
refrigerant is required, the service
technician must comply with all Federal,
State and local laws. Refer to general
service bulletin MSCU-SB-1 (latest edition).
Figure 63. Suction line filter installation

Refrigeration System

W W A A R R N N I I N N G G
R R - - 4 4 1 1 0 0 A A R R e e f f r r i i g g e e r r a a n n t t u u n n d d e e r r H H i i g g h h e e r r
P P r r e e s s s s u u r r e e t t h h a a n n R R - - 2 2 2 2 ! !
F F a a i i l l u u r r e e t t o o u u s s e e p p r r o o p p e e r r e e q q u u i i p p m m e e n n t t o o r r c c o o m m p p o o n n e e n n t t s s a a s s
d d e e s s c c r r i i b b e e d d b b e e l l o o w w , , c c o o u u l l d d r r e e s s u u l l t t i i n n e e q q u u i i p p m m e e n n t t f f a a i i l l i i n n g g
a a n n d d p p o o s s s s i i b b l l y y e e x x p p l l o o d d i i n n g g , , w w h h i i c c h h c c o o u u l l d d r r e e s s u u l l t t i i n n
d d e e a a t t h h , , s s e e r r i i o o u u s s i i n n j j u u r r y y , , o o r r e e q q u u i i p p m m e e n n t t d d a a m m a a g g e e . .
T T h h e e u u n n i i t t s s d d e e s s c c r r i i b b e e d d i i n n t t h h i i s s m m a a n n u u a a l l u u s s e e R R - - 4 4 1 1 0 0 A A
r r e e f f r r i i g g e e r r a a n n t t w w h h i i c c h h o o p p e e r r a a t t e e s s a a t t h h i i g g h h e e r r p p r r e e s s s s u u r r e e s s
t t h h a a n n R R - - 2 2 2 2 . . U U s s e e O O N N L L Y Y R R - - 4 4 1 1 0 0 A A r r a a t t e e d d s s e e r r v v i i c c e e
e e q q u u i i p p m m e e n n t t o o r r c c o o m m p p o o n n e e n n t t s s w w i i t t h h t t h h e e s s e e u u n n i i t t s s . . F F o o r r
s s p p e e c c i i f f i i c c h h a a n n d d l l i i n n g g c c o o n n c c e e r r n n s s w w i i t t h h R R - - 4 4 1 1 0 0 A A , , p p l l e e a a s s e e
c c o o n n t t a a c c t t y y o o u u r r l l o o c c a a l l T T r r a a n n e e r r e e p p r r e e s s e e n n t t a a t t i i v v e e . .
W W A A R R N N I I N N G G
R R e e f f r r i i g g e e r r a a n n t t u u n n d d e e r r H H i i g g h h P P r r e e s s s s u u r r e e ! !
F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w i i n n s s t t r r u u c c t t i i o o n n s s b b e e l l o o w w c c o o u u l l d d r r e e s s u u l l t t i i n n
a a n n e e x x p p l l o o s s i i o o n n w w h h i i c c h h c c o o u u l l d d r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r
s s e e r r i i o o u u s s i i n n j j u u r r y y o o r r e e q q u u i i p p m m e e n n t t d d a a m m a a g g e e . .
S S y y s s t t e e m m c c o o n n t t a a i i n n s s r r e e f f r r i i g g e e r r a a n n t t u u n n d d e e r r h h i i g g h h p p r r e e s s s s u u r r e e . .
R R e e c c o o v v e e r r r r e e f f r r i i g g e e r r a a n n t t t t o o r r e e l l i i e e v v e e p p r r e e s s s s u u r r e e b b e e f f o o r r e e
o o p p e e n n i i n n g g t t h h e e s s y y s s t t e e m m . . S S e e e e u u n n i i t t n n a a m m e e p p l l a a t t e e f f o o r r
r r e e f f r r i i g g e e r r a a n n t t t t y y p p e e . . D D o o n n o o t t u u s s e e n n o o n n - - a a p p p p r r o o v v e e d d
r r e e f f r r i i g g e e r r a a n n t t s s , , r r e e f f r r i i g g e e r r a a n n t t s s u u b b s s t t i i t t u u t t e e s s , , o o r r r r e e f f r r i i g g e e r r a a n n t t
a a d d d d i i t t i i v v e e s s . .
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