Trane CenTraVac CDHG Assembly/Disassembly Manual page 32

R R e e a a s s s s e e m m b b l l y y
13. Reinstall all other chiller components which were
removed. Reconnect the inlet vane linkages.
14. Torque all bolts to specifications listed in
p. 32.
Table 13. Bolt torques
Non-gasket Joints Bolt Torques
Bolt Size (in)
1/2
5/8
3/4
All Other Metal Joints (O-Ring Joins) Shall Use the Following
Torques
Bolt Size (in)
1/4
5/16
3/8
1/2
5/8
3/4
1
All Joints with Flat Elastomeric Gaskets Shall Use the Following
Bolt Torque
Bolt Size (in)
5/16
3/8
1/2
5/8
3/4
15. Reconnect the previously cut compressor/motor oil
supply and return lines and the motor cooling lines
using the factory-supplied couplings.
32
Table 13,
Torque (ft·lb)
70
150
250
Torque (ft·lb)
Min. Max
5 7
11 15
22 27
55 75
120 165
200 280
400 550
Torque (ft·lb)
Min. Max
8 12
12 18
33 50
70 90
105 155
Brazing
W W A A R R N N I I N N G G
E E x x p p l l o o s s i i o o n n H H a a z z a a r r d d a a n n d d D D e e a a d d l l y y G G a a s s e e s s ! !
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 a a l l l l p p r r o o p p e e r r s s a a f f e e r r e e f f r r i i g g e e r r a a n n t t
h h a a n n d d l l i i n n g g p p r r a a c c t t i i c c e e s s 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 . .
N N e e v v e e r r s s o o l l d d e e r r , , b b r r a a z z e e o o r r w w e e l l d d o o n n r r e e f f r r i i g g e e r r a a n n t t l l i i n n e e s s o o r r
a a n n y y u u n n i i t t c c o o m m p p o o n n e e n n t t s s t t h h a a t t a a r r e e a a b b o o v v e e a a t t m m o o s s p p h h e e r r i i c c
p p r r e e s s s s u u r r e e o o r r w w h h e e r r e e r r e e f f r r i i g g e e r r a a n n t t m m a a y y b b e e p p r r e e s s e e n n t t . .
A A l l w w a a y y s s r r e e m m o o v v e e r r e e f f r r i i g g e e r r a a n n t t b b y y f f o o l l l l o o w w i i n n g g t t h h e e
g g u u i i d d e e l l i i n n e e s s e e s s t t a a b b l l i i s s h h e e d d b b y y t t h h e e E E P P A A F F e e d d e e r r a a l l C C l l e e a a n n
A A i i r r A A c c t t o o r r o o t t h h e e r r s s t t a a t t e e o o r r l l o o c c a a l l c c o o d d e e s s a a s s a a p p p p r r o o p p r r i i a a t t e e . .
A A f f t t 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 r r e e m m o o v v a a l l , , u u s s e e d d r r y y n n i i t t r r o o g g e e n n t t o o
b b r r i i n n g g s s y y s s t t e e m m b b a a c c k k t t o o a a t t m m o o s s p p h h e e r r i i c c 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 s s y y s s t t e e m m f f o o r r r r e e p p a a i i r r s s . . M M i i x x t t u u r r e e s s o o f f
r r e e f f r r i i g g e e r r a a n n t t s s a a n n d d a a i i r r u u n n d d e e r r p p r r e e s s s s u u r r e e m m a a y y b b e e c c o o m m e e
c c o o m m b b u u s s t t i i b b l l e e i i n n t t h h e e p p r r e e s s e e n n c c e e o o f f a a n n i i g g n n i i t t i i o o n n s s o o u u r r c c e e
l l e e a a d d i i n n g g t t o o a a n n e e x x p p l l o o s s i i o o n n . . E E x x c c e e s s s s i i v v e e h h e e a a t t f f r r o o m m
s s o o l l d d e e r r i i n n g g , , b b r r a a z z i i n n g g o o r r w w e e l l d d i i n n g g w w i i t t h h r r e e f f r r i i g g e e r r a a n n t t
v v a a p p o o r r s s p p r r e e s s e e n n t t c c a a n n f f o o r r m m h h i i g g h h l l y y t t o o x x i i c c g g a a s s e e s s a a n n d d
e e x x t t r r e e m m e e l l y y c c o o r r r r o o s s i i v v e e a a c c i i d d s s . .
Except as noted in the following, braze with the
following filler metals:
• Braze all copper-to-copper joints with A.W.S. BcuP-
6 filler metal.
• Braze all copper-to-brass joints with A.W.S. BcuP-6
filler metal using white or black brazing flux.
• Braze all other joints with A.W.S. Bag-28 filler
metal.
Bleed dry nitrogen through the lines while brazing to
prevent the formation of oxides which can contaminate
the oil and refrigerant systems.
N N o o t t e e : : Use silver soldering with 96% Sn-4% Ag (for
example, J.W. Harris Co. Stay Brite ® ) to replace
brazing when the heat from brazing would be
detrimental to the immediate or nearby parts.
E E x x a a m m p p l l e e s s : :
1. Joints next to threaded joints in which the copper
or brass threads become too soft and/or Loctite®
loses its sealing capability due to excess heat.
2. Joints next to valves in which the valves cannot be
taken apart or are not recommended for brazing.
Final Installation Procedures
After the chiller has been moved to the equipment
room and reassembled under Trane supervision, leak
testing, and evacuation can be performed by Trane or
under Trane supervision. Upon verification of leak
tightness, installation can proceed for unit piping,
wiring, etc. After installation has been completed, fill
out CTV-ADF001*-EN (CenTraVac ™ Installation
Completion Check Sheet and Request for Trane
Service) to schedule the startup; the chiller
CVHE-SVN04M-EN