5-6. SERVICE MANIFOLD INSTALLATION. - Continued
Using excessive force when opening or closing valves can cause
damage to the valve seats.
The compressor shut off valves can be adjusted to three positions, fully
closed to block the refrigerant tubes and isolate the compressor and
service port, fully open to allow flow from piping to compressor but not
the service port, and cracked (one turn closed from fully open) to allow
flow from piping to compressor and service port on valve
Remove two shut off valve caps and turn the shut off valves fully counterclockwise to backseat them.
Remove two flare coupling caps.
Check that all four service manifold valves are closed
Push switch in side door will prevent refrigeration unit from operating if
door is open. Do not pass the service manifold hoses through the side
door if the refrigeration unit will need to be operated.
Pass service manifold hoses through front top door and connect service manifold pressure gauge hose to
discharge flare coupling and compound gauge hose to suction flare coupling.
Connect service manifold charge hose to recovery unit.
Turn discharge and suction shut off valves one turn clockwise to crack open valves.
Open service manifold pressure gauge valve and charge valve. Operate recovery unit and allow
refrigerant to purge for 3-5 seconds Close pressure gauge and charge valves then shut down recovery unit.
Open service manifold compound gauge valve and charge valve. Operate recovery unit and allow
refrigerant to purge for 3-5 seconds Close compound gauge and charge valves then shut down recovery