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system back into service.
8. Straighten any coil fins that may be damaged with a
fin rake.
9. Replace all panels and parts and restore electrical
power to the unit.
10. Ensure that contaminated material does not contact
other areas of the equipment or building. Properly
dispose of all contaminated materials and cleaning
solutions.
Refrigerant Coils
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 . . 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 . .
1. Disconnect all electrical power to the unit.
2. Wear the appropriate personal protective
equipment (PPE).
3. Access to the coil section of the unit (both sides).
4. Use a soft brush to remove loose debris from both
sides of the coil.
5. Mix a high quality coil cleaning detergent with
water according to the manufacturer's instructions.
If the detergent is strongly alkaline after mixing (pH
8.5 or higher), it must contain an inhibitor. Carefully
follow the cleaning solution manufacturer's
instructions regarding product use.
6. Place the mixed solution in a garden pump-up
sprayer or high pressure sprayer. If using a high
pressure sprayer note the following:
•
Maintain a minimum nozzle spray angle of 15°
•
Spray perpendicular to the coil face
•
Protect other areas of the equipment and
internal controls from contact with moisture or
the cleaning solution
•
Keep the nozzle at least six inches from the coil
•
Do not exceed 600 psig
PKG-SVX027C-EN
Draining the Waterside Economizer Coil
N N O O T T I I C C E E
C C o o i i l l F F r r e e e e z z e e - - U U p p ! !
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 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 d d a a m m a a g g e e . .
D D r r a a i i n n a a n n d d v v e e n n t t c c o o i i l l s s w w h h e e n n n n o o t t i i n n u u s s e e . . T T r r a a n n e e
r r e e c c o o m m m m e e n n d d s s g g l l y y c c o o l l p p r r o o t t e e c c t t i i o o n n i i n n a a l l l l p p o o s s s s i i b b l l e e
f f r r e e e e z z i i n n g g a a p p p p l l i i c c a a t t i i o o n n s s . . U U s s e e a a g g l l y y c c o o l l a a p p p p r r o o v v e e d d f f o o r r
u u s s e e w w i i t t h h c c o o m m m m e e r r c c i i a a l l c c o o o o l l i i n n g g a a n n d d h h e e a a t t i i n n g g s s y y s s t t e e m m s s
a a n n d d c c o o p p p p e e r r t t u u b b e e c c o o i i l l s s . .
Drain plugs are in the piping below supply and return
header for each coil. Use these plugs to drain the coil
and piping. When draining the coil, open the vents at
the top of the supply and return headers. Also, a drain
plug is at the bottom of the inlet condenser manifold
and in the outlet pipe near the left side of the unit.
Remove these plugs to drain the condensers. Be sure
to open the vent plugs at the top of the condenser inlet
and outlet manifold. See .
When refilling the condenser/waterside economizer
coil system with water, provide adequate water
treatment to prevent the formation of scale or
corrosion.
Chemically Cleaning the Condenser
N N O O T T I I C C E E
P P r r o o p p e e r r W W a a t t e e r r T T r r e e a a t t m m e e n n t t R R e e q q u u i i r r e e d d ! !
T T h h e e u u s s e e o o f f u u n n t t r r e e a a t t e e d d o o r r i i m m p p r r o o p p e e r r l l y y t t r r e e a a t t e e d d w w a a t t e e r r
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 s s c c a a l l i i n n g g , , e e r r o o s s i i o o n n , , c c o o r r r r o o s s i i o o n n , , a a l l g g a a e e o o r r
s s l l i i m m e e . .
U U s s e e t t h h e e s s e e r r v v i i c c e e s s o o f f a a q q u u a a l l i i f f i i e e d d w w a a t t e e r r t t r r e e a a t t m m e e n n t t
s s p p e e c c i i a a l l i i s s t t t t o o d d e e t t e e r r m m i i n n e e w w h h a a t t w w a a t t e e r r t t r r e e a a t t m m e e n n t t , , i i f f
a a n n y y , , i i s s r r e e q q u u i i r r e e d d . . T T r r a a n n e e a a s s s s u u m m e e s s n n o o r r e e s s p p o o n n s s i i b b i i l l i i t t y y
f f o o r r 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 u u r r e e s s w w h h i i c c h h r r e e s s u u l l t t f f r r o o m m u u n n t t r r e e a a t t e e d d
o o r r i i m m p p r r o o p p e e r r l l y y t t r r e e a a t t e e d d w w a a t t e e r r , , o o r r s s a a l l i i n n e e o o r r b b r r a a c c k k i i s s h h
w w a a t t e e r r . .
Condensing water contains minerals that collect in the
condenser. Cooling towers also collect dust and foreign
materials that deposit in the condenser. The formation
of scale or sludge in the condenser is indicated by a
decreased water flow, low temperature difference
between inlet and outlet water, and abnormally high
condensing temperatures. To maintain maximum
condenser efficiency, the condenser must remain free
of built-up scale and debris. Clean the condenser
chemically. This unit is equipped with removable and
cleanable 20 mesh strainer. The unit is also equipped
with differential pressure sensors that will alert the
user when the strainer needs to be replaced. Proper
maintenance and cleaning of the condenser is
necessary to ensure proper performance of the unit.
1. Disconnect all electrical power to the unit.
2. Wear appropriate personal protective equipment
(PPE).
M M a a i i n n t t e e n n a a n n c c e e
71
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