Air Handling Unit Cleaning

AHU maintenance practices help keep condensate pans, blowers, and heat exchange surfaces (coils) clean and free of corrosion and buildup. Keeping these same systems free of build-up improves indoor air quality, extends the life of the systems and greatly increases their efficiency. It is also very important to keep condensate pans, and other AHU components clean to prevent mold growth inside of the equipment. Maintaining systems free of corrosion greatly extends the life of these costly systems.
Blower Before3.1 AHU Coil Before.jpg-for-web-LARGE
Blower After3.1 AHU Coil After.jpg-for-web-NORMAL

AHU & Coil Cleaning Report

 

AHU Rating CFM 40000 Manufacturer
AHU Size Length in Feet (L) 12′ 2″ Width in Feet (W) 9′ 2″ Thickness in Inches

 

Before Cleaning Reading After Cleaning Reading (15th Jan 09) After Cleaning Reading(17th Jan09)
3 6 11 8 21 35 6 9 13 14 18 25 28 37 34 39 15 50
8 8 15 13 11 7 14 16 10 17 11 7 41 27 14 7 20 43
9 9 15 26 17 5 13 11 7 14 8 12 38 15 27 26 28 28
16 20 12 19 20 12 19 28 28 32 26 22 36 25 26 8 37 28
14 19 19 16 16 10 18 39 29 42 35 21 62 39 22 26 30 41
11 10 16 10 11 19 12 23 21 30 26 15 60 34 12 34 22 21
Before Cleaning CFM 15407 After Cleaning CFM 21421 After Cleaning CFM 33480

 

Before & After

Method: Air Handling Unit Cleaning

AHU maintenance practices help keep condensate pans, blowers, and heat exchange surfaces (coils) clean and free of corrosion and buildup. Keeping these same systems free of build-up improves indoor air quality, extends the life of the systems and greatly increases their efficiency. It is also very important to keep condensate pans, and other AHU components clean to prevent mold growth inside of the equipment. Maintaining systems free of corrosion greatly extends the life of these costly systems.

Method of work :

(A)Source Removal Cleaning Methods: The AHU shall be cleaned using Source Removal mechanical cleaning methods designed to extract contaminants from within the AHU and safely remove contaminants from the facility.  It is the contractor’s responsibility to select Source Removal methods that will render the AHU Visibly Clean and capable of passing cleaning verification method (See applicable NADCA ACR 2002 Standards) and other specified tests, in accordance with all general requirements.  No cleaning method, or combination of methods, shall be used which could potentially damage components of the AHU or negatively alter the integrity of the system. No acid based cleaners shall be used.

Blower Before and Blower After pic

(B) Acid cleaners shall not be used, any other cleaning method may be used which will render the Coil Visibility Clean and capable of passing Coil Cleaning Verification (see applicable NADCA ACR 2002 Standards). The drain for the condensate drain pan shall be operational. Cleaning methods shall not cause any appreciable damage to, displacement of, inhibit heat transfer, or erosion of the coil surface or fins, and shall conform to coil manufacturer recommendations when available.  Coils shall be thoroughly rinsed with clean water to remove any latent residues.

Coil Before and Coil After pic

CFM/CMH

Manufacturer

8295/14100

Caryaire

 

Length in Feet (L)

Width in Feet (W)

Thickness in Feet

4.25

4

0.50

                       

Before Cleaning Reading

After Cleaning Reading

19

11

10

8

20

19

88

60

68

60

62

102

5

4

7

7

5

6

80

60

84

71

68

23

8

4

4

2

2

9

79

52

70

38

30

29

14

5

6

2

1

8

57

51

52

38

18

20

9

13

19

3

3

4

46

49

52

29

14

19

16

27

7

7

11

47

27

51

16

15

Before Cleaning CFM

After Cleaning CFM

1530.00

8530

Leave a Reply

Your email address will not be published. Required fields are marked *