5 - 1 5 . FLUSHING THE REFRIGERANT SYSTEM. - continued
Burns can result from contact with acid formed by burn out of oil and refrigerant.
Avoid inhaling fumes and wear a gas mask if area is not thoroughly ventilated.
Wear protective goggles or glasses to protect eyes. Wear gloves to protect
(2) Flush the refrigerant system with refrigerant R-114 using a diaphragm pump.
(a) Connect a line between POINTS 1 and 4.
(b) Connect a line from the discharge side of the diaphragm pump to POINT 5.
(c) Connect the reservoir recovery line to POINT 2.
(d) Close suction and discharge line service valves.
(e) Tag and disconnect the pressure equalizer solenoid valve wire leads. (See paragraph 4-48.)
(f) Connect solenoid valve wire leads to power supply and apply 28 volts dc to energize valve.
(g) Flush for 10 minutes.
(h) Reverse the lines at POINTS 2 and 5.
(i) Flush for 10 minutes.
(j) Disconnect power from solenoid valve leads.
(k) Remove line from POINT 5 and cap POINT 5.
(l) Connect reservoir recovery line to POINT 3 and open suction line service valve.
(m) Flush for 2 minutes.
(n) Remove reservoir recovery line and connect to POINT 6. Close suction line service valve and open
discharge line service valve.
(o) Flush for 2 minutes.
(p) Close discharge line service valve. Remove lines from POINTS 2 and 6 and cap from POINT 5.