CHART Orca MicroBulk CO2 Series - Page 24

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 dierential may increase pressure/ow
rate for a specic 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 ll connection.
10. Assess Orca CO
2
and receiving tank pressures. On
the lower pressure tank, slowly open the valve(s) to
pressurize the ll 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 ll line drain to
purge air from hose.
c. Close Dispense (V-41) valve.
11. Open receiving tank ll 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 lling. If ow 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. Dierential 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% ow rate on Flowcom. Use
Dispense Valve (V-41) to throttle ow rate as
necessary.
i. The Flowcom will not totalize with greater
than 100% ow rate. Decrease ow rate or
terminate dispensing.
ii. The Flowcom will not totalize with less than
3% ow rate. Increase ow 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.