EarthLinked AVS-0030-A, Quick Start Instructions

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SD-410-QS (H) (06/15) Page 44
These following steps describe the procedure for system start-up in the cooling mode.
This is illustrated in the process flow chart, Figure 38. Be sure the cooling mode for the
system is enabled.
1. Close the HP valve on the gage block. Turn the system on in COOL mode , monitor
the suction pressure, and wait for it to stabilize.
2. When suction pressure has stabilized, check the bottom ACC sight glass to
determine if there is liquid in the ACC.
3. If there is NO LIQUID REFRIGERANT in the bottom sight glass, proceed to step 5.
4. If there is LIQUID REFRIGERANT in the bottom ACC sight glass, continue to run the
system to remove the liquid refrigerant from the ACC, in accordance with the
procedure described in the process flow chart, Figure 38.
5. Monitor the suction pressure, as shown in Figure 32. If suction pressure is not yet
up to 120 psig, the INLINE sight glass (not the ACC sight glass) will show refrigerant
flow with many bubbles, as illustrated in Figure 33. This indicates that the Cooling
Assist Valve (CAV) has not yet closed. Monitor the suction pressure rising. As the
ground warms, the suction pressure will rise and the sight glass will show fewer
bubbles.