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CO

2

 and Nitrogen Filling 

CARBON DIOXIDE (CO

2

) FILLING:

1. Disconnect hose and unscrew regulator from the DrainKat.

2. Turn over and vent off any remaining contents from the DrainKat.  This can be an 

  effective way to pre-chill the cylinder – see warning below.

3. Weigh the small cylinder, and record the tare weight.

OPERATOR’S TIP:  Slightly open the valve of the parent cylinder at this point to 

vent off any vaporized CO

2

 in the dip tube.  Within 5 seconds a white snow like 

discharge indicates liquid CO

2

 is available to be transfilled. Vapor type cylinders 

will have to be inverted to extract liquid. (See illustration #2.)

MBK-6 DrainKat™ 

Instructions

The MBK-6 DrainKat™ condensate 

drain line cleaning kit uses a dry 

nitrogen or CO

2

 charge to clear 

drain line clogs. The Drain Kat 

also uses the included blow gun 

in conjunction with the QN-S3 

to clean off dirt and debris from 

HVAC coils.

FILLING 

FROM:

PARENT CO

2

DIP TUBE 

CYLINDER

DIP TUBE  or SIPHON TUBE

VAPOR CARBON  DIOXIDE  (CO

2

)

LIQUID CARBON  DIOXIDE  (CO

2

)

FA-03   CO

2

x CO

2

ADAPTOR

DRAIN  KAT

llustration #1

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