CHART Orca MicroBulk CO2 Series, Product Manual

12

Operations

Product Manual - Orca

™

 CO

2

 Series MicroBulk Delivery System

II. Fill Orca CO

2

 from Bulk Tank Pump

1   Remove hoses from storage tubes, set in place and open 

cabinet doors  

2   Connect supply tank vapor balance hose to Vapor 

Balance (DC-5) connection and connect fill hose from 

supply tank to Fill Line (DC-1) connection 

3   Open supply tank vapor balance and dispense valves  

a  This assumes supply tank is at a lower pressure than  

    Orca CO

2

  If Orca CO

2

 is at a higher pressure, swap  

    Orca CO

2

 and supply tank in steps 3 and 4  

4   Open and close Vapor Balance Line Drain (V-45) and 

Fill Line Drain (V-9) valve to purge air from hoses 

5   Slowly open Vapor Balance (V-44) valve to equalize 

pressure in tanks 

6   Open Bottom Fill (V-17) and Pump Inlet/Fill (V-1) 

valve 

7  

Start supply tank pump filling and monitor liquid level.

8   When liquid level is getting close to full (3/4 of net 

capacity), open Vapor Balance Line Drain (V-45) valve 

a  The vapor balance line serves as the 95% full trycock 

9   When liquid exits the Vapor Balance Line Drain (V-45), 

valve stop the pump and close the Bottom Fill (V-17) 

valve 

10   Close the Vapor Balance Line Drain (V-45), Pump 

Inlet/Fill (V-1), and Vapor Balance (V-44), supply tank 

dispense & vapor balance valves 

11   Open and close the Fill Line Drain (V-9) and Vapor 

Balance Line Drain (V-45) valves to drain and release 

all pressure 

Warning!  Fast depressurization of liquid 

CO

2

 can cause dry ice to 

form, holding in pressure that 

quickly releases when the dry 

ice melts. Follow proper safety 

procedures for draining and 

venting liquid CO

2

 from hoses. 

12   Disconnect hoses from Vapor Balance (DC-5) and Line 

(DC-1) connections 

13   Close cabinet doors and stow hoses  Replace all dust 

caps 

III. Fill Orca CO

2

 from Onboard Pump

1   In order to minimize pump cavitation and surging:

a  The liquid level in the supply tank must be above the  

    Orca CO

2

 pump inlet height  As such, supply tanks  

    should be limited to vertical tanks or horizontal tanks  

    located above the Orca CO

2

 pump height  

b  Additional subcool in the supply tank will be    

    beneficial.

c  If the Orca CO

2

 tank pressure is significantly lower  

    than the supply tank, causing the supply-tank pressure  

    to drop below the saturation of the supply liquid when  

    vapor balancing, pressure in the supply tank must be  

    added to subcool the liquid 

2   Start truck and engage PTO, turn on cruise control and 

increase engage speed to set point 

a  Engine must be at low idle speed to engage PTO 

Caution!  Engage the PTO when not at 

low idle speed will damage the 

PTO. 

b  Engine will go to set speed with one push of the  

    cruise control speed increase button  

Caution!  Supply tank must have a 

vapor balance circuit for this 

functionality otherwise pump 

damage may occur.

3   Remove hoses from storage tubes, set in place and open 

cabinet doors  

4   From delivery tank connect vapor balance hose to Vapor 

Balance (DC-5) connection and connect fill hose from 

delivery tank to Fill Line (DC-1) connection 

5.  Slowly open supply tank liquid valve to fill pump supply 

hose with liquid 

6   Open Fill Line Drain (V-9) valve until CO

2

 snow comes 

out and close valve. This purges air and fills the hose 

with liquid  

7   Make sure Pump Inlet/Fill (V-1) valve is closed 

8  —

 If supply tank is higher pressure than Orca CO

2

: 

a  Open Bottom Fill (V-17) valve  

b  Start pump with Switch (SW-1) 

c  When supply tank pressure comes within 5 psig  

    of Orca CO

2

 tank pressure, open supply tank