CHART Orca MicroBulk CO2 Series, Product Manual

18

Operations

Product Manual - Orca

™

 CO

2

 Series MicroBulk Delivery System

b  Orca CO

2

 tank pressure may decrease over time  

    if the pressure build rate cannot keep up with the  

    dispense rate  

i  This is normal  Continue to keep the pressure  

   build circuit open to keep subcool on the liquid  

ii  Adjusting the Bypass (V-7) valve for a higher  

    pressure differential may increase pressure/flow  

    rate for a specific condition, but may over-   

    pressurize the dispense circuit when the Orca CO

2

    vessel pressure is higher, causing the 400 psig  

    relief to discharge  Adjusting the bypass is not  

    recommended  

8   Close Dispense (V-41) & Delivery Flex Hose (V-47) 

valves, open Dispense Line Drain (V-8) and disconnect 

Hose Reel Delivery Flex Hose (DC-3) 

9   Connect 1 0” to 1 5” CGA adapter to Dispense 

Connection (DC-2)  Connect 1 5” bulk dispense hose to 

adapter and receiving tank fill connection.

10   Assess Orca CO

2

 and receiving tank pressures  On 

the lower pressure tank, slowly open the valve(s) to 

pressurize the fill hose. Use the opposite tank’s line 

drain to purge the hose  

Example:

 Orca CO

2

 is at 250 psig, receiving tank is  

at 275 psig  

a  Slowly open Dispense (V-41) valve to pressurize  

hose  Opening too quickly can cause dry ice to form  

in hose  

b. Open and close receiving tank fill line drain to  

purge air from hose 

c  Close Dispense (V-41) valve  

11  

Open receiving tank fill valve. 

12   Note Orca CO

2

 pressure and start pump with Switch 

(SW-1) in recirculation mode 

a  Bypass (V-7) valve is factory set to 70 psid  Starting  

    the pump with vessel pressure greater than 330 psig  

    WILL exceed 400 psig pump discharge, causing the  

    400 psig Pump Discharge Relief (RV-11) to relieve 

13   Monitor for Pump (P-1) to catch prime 

a  Exceeding 330 psig tank pressure will exceed 400  

    psig pump discharge when pump is started, causing  

    Pump Discharge Relief (RV-11) to relieve  

i  Bypass (V-7) valve is factory set to 70 psid  The  

   pump discharge pressure will be 70 psig greater  

   than the vessel pressure when pump catches  

   prime  

b  If pump discharge pressure is less than 50 psig higher  

    than CO

2

 Orca tank — and/or the gauge needle is  

    erratically bouncing — the pump did not catch prime  

i  Stop pump and restart, or

ii  Open PB Force Feed (V-16) valve to assist in  

    catching prime  

14   Press START on Flowcom to enable metering 

15   Slowly open Dispense (V-41) valve 

16  

Monitor filling. If flow rate is too high, too low, or 

suddenly slows, the Flowcom may terminate totalizing 

a  The Totalizer has an approximately 5 second delay 

from when the delivery starts to account for hose 

volume  This is normal  

b  If the Totalizer fails to start or stops due to an error  

    condition, close a delivery valve Delivery Hose  

    (V-46), Delivery Flex Hose (V-47) or Dispense  

    (V-41)  and assess 

i  Receiving tank may be full  If not full, restart  

   dispense 

ii. Differential pressure from Orca CO

2

 to receiving  

    tank may be too little  Pressure build Orca CO

2

 or  

    vent receiving tank as necessary 

c  Once the issue is addressed, open Dispense (V-41)  

    valve  There will be no delay in Totalizer now as the  

    hose volume is already accounted for  

d. Do not exceed 100% flow rate on Flowcom. Use  

    Dispense Valve (V-41) to throttle flow rate as    

    necessary 

i  The Flowcom will not totalize with greater  

   than 100% flow rate. Decrease flow rate or  

   terminate dispensing  

ii  The Flowcom will not totalize with less than  

    3% flow rate. Increase flow rate or terminate  

    dispensing 

iii  In both conditions, the delivery will continue  

     until a dispense valve is closed 

17   When delivery is complete close Dispense (V-41) valve 

and press STOP on the Flowcom  

a  Closing slowly reduces the chance of a pressure spike 

18   Stop pump with Switch (SW-1) 

19   Close PB Liquid (V-28), PB Force Feed (V-16) and 

Pump Inlet/Fill (V-1) valves