Maintenance; Monthly Maintenance; Air Handling Equipment; Condensing Unit - Trane RAUJ-C20 Installation, Operation And Maintenance Manual

Maintenance

Monthly Maintenance

Air Handling Equipment

W W A A R R N N I I N N G G
H H a a z z a a r r d d o o u u s s V V o o l l t t a a g g e e ! !
F F a a i i l l u u r r e e t t o o d d i i s s c c o o n n n n e e c c t t p p o o w w e e r r b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g 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 . .
D D i i s s c c o o n n n n e e c c t t a a l l l l e e l l e e c c t t r r i i c c p p o o w w e e r r , , i i n n c c l l u u d d i i n n g g r r e e m m o o t t e e
d d i i s s c c o o n n n n e e c c t t s s b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g . . F F o o l l l l o o w w p p r r o o p p e e r r
l l o o c c k k o o u u t t / / t t a a g g o o u u t t p p r r o o c c e e d d u u r r e e s s t t o o e e n n s s u u r r e e t t h h e e p p o o w w e e r r
c c a a n n n n o o t t b b e e i i n n a a d d v v e e r r t t e e n n t t l l y y e e n n e e r r g g i i z z e e d d . . V V e e r r i i f f y y t t h h a a t t n n o o
p p o o w w e e r r i i s s p p r r e e s s e e n n t t w w i i t t h h a a v v o o l l t t m m e e t t e e r r . .
Before completing the following checks, turn the
system control circuit switch 1S2 and 5S1 to the "Off"
position. Open the main power disconnect switch for
the Condensing Unit and Air Handling Unit and "lock it"
in the "Off" position before removing any access
panels.
• Inspect the return air filters. Clean or replace them if
necessary.
• Check the evaporator drain pan and condensate
piping to ensure that there are no blockages.
• Inspect the evaporator coils for dirt. If the coils
appear dirty, clean them according to the
instructions described in
p. 56," p. 120.
• Inspect the economizer damper hinges and pins (if
applicable) to ensure that all moving parts are
securely mounted. Clean the blades as necessary.
• Verify that all damper linkages move freely.
Lubricate with white grease, if necessary.
• Check Supply Fan motor bearings. Repair or replace
the motor as necessary.
• Check the fan shaft bearings for wear. Replace the
bearings as necessary.
• Lubricate supply fan bearings. Contact equipment
manufacturer for recommended greases.
N N O O T T I I C C E E
B B e e a a r r i i n n g g D D a a m m a a g g e e ! !
O O v v e e r r l l u u b b r r i i c c a a t t i i o o n n 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 s s m m u u c c h h d d a a m m a a g g e e
t t o o f f a a n n b b e e a a r r i i n n g g s s a a s s n n o o t t e e n n o o u u g g h h g g r r e e a a s s e e . .
T T o o p p r r e e v v e e n n t t d d a a m m a a g g e e t t o o f f a a n n b b e e a a r r i i n n g g s s , , d d o o n n o o t t o o v v e e r r
l l u u b b r r i i c c a a t t e e . .
SS-SVX11K-EN
""Coil Cleaning,"
I I m m p p o o r r t t a a n n t t : : Use a hand grease gun to lubricate
bearings. Add grease until a light bead
appears all around the seal.
After greasing the bearings, check the
setscrews to ensure that the shaft is held
securely to the bearings and fan wheels.
Make sure that all bearing supports are
tight.
• Check the supply fan belt(s). If the belts are frayed
or worn, replace them.
• Verify that all wire terminal connections are tight.
• Inspect unit for unusual conditions (e.g., loose
access panels, leaking piping connections, etc.)
• When checks are complete, verify all retaining
screws are reinstalled in unit access panels.

Condensing Unit

W W A A R R N N I I N N G G
R R o o t t a a t t i i n n g g C C o o m m p p o o n n e e n n t t s s ! !
F F a a i i l l u u r r e e t t o o d d i i s s c c o o n n n n e e c c t t p p o o w w e e r r b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g 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 r r o o t t a a t t i i n n g g c c o o m m p p o o n n e e n n t t s s c c u u t t t t i i n n g g a a n n d d s s l l a a s s h h i i n n g g
t t e e c c h h n n i i c c i i a a 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 . .
D D i i s s c c o o n n n n e e c c t t a a l l l l e e l l e e c c t t r r i i c c p p o o w w e e r r , , i i n n c c l l u u d d i i n n g g r r e e m m o o t t e e
d d i i s s c c o o n n n n e e c c t t s s b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g . . F F o o l l l l o o w w p p r r o o p p e e r r
l l o o c c k k o o u u t t / / t t a a g g o o u u t t p p r r o o c c e e d d u u r r e e s s t t o o e e n n s s u u r r e e t t h h e e p p o o w w e e r r
c c a a n n n n o o t t b b e e i i n n a a d d v v e e r r t t e e n n t t l l y y e e n n e e r r g g i i z z e e d d . .
• Manually rotate the condenser fans to ensure free
movement and check motor bearings for wear.
Verify that all of the fan mounting hardware is tight.
• Verify that all wire terminal connections are tight.
• Inspect the condenser coils for dirt and foreign
debris. If the coils appear dirty, clean them
according to the instructions described in Coil
Cleaning section.
• Inspect the compressor and condenser fan motor
contactors. If the contacts appear severely burned
or pitted, replace the contactor. Do not clean the
contacts.
• Check the compressor oil level. (Compressors "Off")
119