Airmax KoiAir KA40 User manual

airmaxeco.com | 866-424-7629 | P.O.Box 38 | Romeo, MI 48065
Important Information ................... 2
Product Contents ........................ 2
Installation ........................... 3-6
Changing the Air Filter.....................7
Replacement Parts........................8
Table of Contents:
KoiAir™ KA40
Diaphragm Compressor
Maintenance Kit
INSTALLATION INSTRUCTIONS
Item #510146

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F
IMPORTANT INFORMATION:
Please read these instructions thoroughly before use. Failure to follow instructions may
result in equipment damage or failure, losses, injury or death.
WARNING:
To reduce the risk of electric shock or injury:
• ALWAYS unplug the KoiAir™ compressor from the power source before installing,
removing or servicing the KoiAir™ components.
IMPORTANT: Airmax® is not responsible for equipment damage or failure, losses,
injury or death resulting from failure to follow safety precautions, misuse or
abuse of equipment.
2
C
AB
D
E
A2 Outer Diaphragms
B2 Inner Diaphragms
C2 Diaphragm Back Boards
D2 Diaphragm Front Boards
E4 Protective Washers
What’s Included:
B
E E
D
C
Diaphragm Assembly Order
PRODUCT CONTENTS

P.O. Box 38 | Romeo, MI 48065 3
INSTALLATION INSTRUCTIONS:
1
Remove the Casing
FLIP the compressor over and remove 4 screws securing
the outer casing using a #2 phillips screwdriver, then
separate the upper and lower casing.
2Remove Top Plate REMOVE the 4 screws securing the diaphragm top plate.
3Separate Inner & Outer Diaphragm REMOVE the rubber boot from the outer diaphragm
assembly. Then remove the 4 screws securing the outer
diaphragm assembly using a #2 phillips screwdriver.
See Video Instructions of the
KoiAir™ (KA40) Diaphragm installation online
at airmaxeco.com/InstallKA40
• Phillips Screwdriver
• 7mm Nut Driver
• Small Pick Tool
Tools Required:

airmaxeco.com | 866-424-7629
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4
Separate Diaphragms
Use a small pick tool to separate the outer diaphragm
from the inner diaphragm.
5
Remove Center Ring
REMOVE and save the center retaining nut and two
washers using your 7mm nut driver.
6
Remove Inner Diaphragm
REMOVE the inner diaphragm including the diaphragm
front boards and back boards.
Take note of the two metal rings
7
Install Protective Washer
INSTALL a new diaphragm front board. The diaphragm
front board is the one with 4 pegs. Apply the protective
washer on top of the diaphragm front board.
8
Install Inner Diaphragm
INSTALL a new inner diaphragm and align the 4 pegs with
the 4 holes inside the inner diaphragm.
INSTALLATION INSTRUCTIONS: Continued...

P.O. Box 38 | Romeo, MI 48065 5
9Push Front Board into Place A Push the front board rmly into place and make sure the
pegs come through evenly on the reverse side of the inner
diaphragm.
10
Place Metal Rings
PLACE the two metal rings onto the inner diaphragm
assembly. Align the 2 lines on the front board to be
pointing to the notches on the inner diaphragm.
11
Place Diaphragm on Armature
INSTALL the inner diaphragm into the armature with
the two lines being vertical and the metal rings in
between the inner diaphragm and the armature.
12
Install 2nd Protective Washer
INSTALL the 2nd protective washer onto the diaphragm
followed by the diaphragm back board with the at
side facing outwards. It can be helpful to tilt the
compressor to keep the washer and diaphragm back
board in place.
13
Install Flat Washer, Lock Washer, Nut
INSTALL the at washer, lock washer and nut. Use the
7mm nut driver to securely tighten the nut.

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15
Reconnect the Rubber Boot
RECONNECT the rubber boot to the outer diaphragm
assembly.
16
Repeat Steps 3-15 for the Other
Diaphragm
REPEAT steps 3-15 for the diaphragm on the other side of the
compressor motor.
17Re-Install the Black Diaphragm Top Plate REINSTALL the 4 screws with washers to the top plate and
securely tighten with a #2 phillips screw driver.
18Re-attach Upper & Lower Casing RE-ATTACH and secure the upper and lower casings using the
4 case screws.
INSTALLATION INSTRUCTIONS: Continued...
6
14
Re-Install Outer Diaphragm
RE-INSTALL the outer diaphragm assembly by matching
up the notch on the assembly with the notch on the
compressor motor and secure with the 4 assembly
screws.

P.O. Box 38 | Romeo, MI 48065 7
CHANGING THE AIR FILTER:
1
Remove the Filter Cap
REMOVE the air lter cap by pulling from the bottom
edge rst.
2
Remove Filter
REMOVE the worn air lter by pinching and pulling straight
out. Replace the air lter with a new one by pressing new
lter into place.
3
Attach the Filter Cap
PRESS and secure the air lter cap back into place.
MAINTENANCE:
We recommend replacing the diaphragm and air lter every 6-12 months to
maintain optimum performance.

airmaxeco.com | 866-424-7629 | P.O.Box 38 | Romeo, MI 48065
REPLACEMENT PARTS:
DESCRIPTION PART #
Airmax® KoiAir™ (KA40) Air Filters 510149
THANK YOU FOR CHOOSING:
Airmax®, Inc.
Safe, Simple Solutions™
P.O. Box 38
Romeo, MI 48065
866-424-7629
www.airmaxeco.com
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