Maintenance; Service Access; Variable Frequency Drive (Vfd); Air Filters - Trane IntelliPak SCWF 20 Installation, Operation And Maintenance Manual

Commercial self-contained signature series 20 to 110 tons

Table of Contents

Maintenance

Service Access

Access unit controls through the front, top left panel.

The panel is secured with two quick- acting fasteners

and an automatic latch, which require a screwdriver to

remove.

Removable unit panels on the right-hand side provide

access to compressors, fan, motor belts, extended

grease line fittings, and drive side bearing. On the

unit's left side, removable panels allow access to the

expansion valves, filter driers, refrigerant sight glasses,

liquid line valves, opposite drive fan bearing, extended

grease line fittings, condensers, and waterside

economizer control valve.

The compressor, condenser, and fan motor access

panels are secured with quick acting fasteners. Fast

thread screws secure access panels for economizer

coils, evaporator coils expansion valves, water valves,

and left fan bearing. Access to other components

requires removal of semipermanent panels secured

with sheet metal screws. During operation, sight

glasses are viewable through the portholes on the

unit's left upper panel.

Variable Frequency Drive (VFD)

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 w w / / C C a a p p a a c c i i t t o o r r 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 a a n n d d d d i i s s c c h h a a r r g g e e

c c a a p p a a c c i i t t o o r r 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 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 a a n n d d d d i i s s c c h h a a r r g g e e a a l l l l m m o o t t o o r r s s t t a a r r t t / / r r u u n n

c c a a p p a a c c i i t t o o r r 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 . . F F o o r r v v a a r r i i a a b b l l e e

f f r r e e q q u u e e n n c c y y d d r r i i v v e e s s o o r r o o t t h h e e r r e e n n e e r r g g y y s s t t o o r r 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 p p r r o o v v i i d d e e d d b b y y T T r r a a n n e e o o r r o o t t h h e e r r s s , , r r e e f f e e r r t t o o

t t h h e e a a p p p p r r o o p p r r i i a a t t e e m m a a n n u u f f a a c c t t u u r r e e r r ' ' s s l l i i t t e e r r a a t t u u r r e e f f o o r r

a a l l l l o o w w a a b b l l e e w w a a i i t t i i n n g g p p e e r r i i o o d d s s f f o o r r d d i i s s c c h h a a r r g g e e o o f f

c c a a p p a a c c i i t t o o r r s s . . V V e e r r i i f f y y w w i i t t h h a a C C A A T T I I I I I I o o r r I I V V v v o o l l t t m m e e t t e e r r

r r a a t t e e d d p p e e r r N N F F P P A A 7 7 0 0 E E t t h h a a t t a a l l l l c c a a p p a a c c i i t t o o r r s s h h a a v v e e

d d i i s s c c h h a a r r g g e e d d . .

F F o o r r a a d d d d i i t t i i o o n n a a l l i i n n f f o o r r m m a a t t i i o o n n r r e e g g a a r r d d i i n n g g t t h h e e s s a a f f e e

d d i i s s c c h h a a r r g g e e o o f f c c a a p p a a c c i i t t o o r r s s , , s s e e e e P P R R O O D D - - S S V V B B 0 0 6 6 * * - - E E N N . .

The VFD access panel is hinged to allow service access

to the fan motor and belt drive components that are

located behind it. To swing the panel open:

1. Remove the unit center cover panel to the left of the

VFD panel.

2. Remove and discard the sheet metal shipping

screws along the top and bottom edges of the VFD

panel.

3. Disconnect the communications cable from the

keypad on the VFD door panel.

SCXF-SVX01Q-EN

4. Turn the two slotted-head fasteners on the right

edge of the VFD panel fully counterclockwise.

5. Pull on the handle to swing the panel 180°.

To close and reattach the panel, reverse the procedures

listed above.

N N o o t t e e s s : :

•

To secure the panel in the open position

during service procedures, attach the chain

mounted to the cabinet frame behind the

unit center cover panel to the chain retainer

notch on the edge of the VFD panel.

•

Verify that all wires are in their proper

position and not rubbing before replacing

the panel.

•

Panel weight rating = 225 lbs. total,

including factory-installed components.

Air Filters