AK M80/86 Manual P/N 00-15000010 Rev 3
The line regulator is used to maintain a constant delivery pressure since the outlet pressure from the
upstream crossover regulator fluctuates as A Side and B Side cylinders empty and are replaced. The line
regulator is fully adjustable to the maximum outlet pressure. Rotating the knob clockwise increases the
line regulator outlet pressure.
5.1.2. Initial Pressurization
Confirm that an initial leak test has been performed and all leaks repaired.
Close all system valves.
Close line regulator by turning knob counterclockwise.
Turn side selection knob on AK M80/86 crossover regulator clockwise until internal stop is contacted.
The “IN SERVICE” label arrow on the knob should be pointing toward the B Side (right) cylinder
(approximately the 4:30 o’clock position).
Open B Side cylinder valve and manual valve between B Side (right) cylinder and AK M80/86 crossover
manifold. Pressure on B Side (right) gauge should indicate the cylinder pressure.
Open A Side cylinder valve and manual valve between A Side (left) cylinder and AK M80/86 crossover
manifold. Pressure on A Side (left) gauge should indicate the cylinder pressure.
Adjust line regulator (clockwise) to desired delivery pressure setting as indicated on pressure gauge.
Check all system connections for leaks. This can be done with soap solution on each connection, by
listening for an audible hissing sound, or by using an appropriate gas detector.
5.1.3. B Side (right) Cylinder Depleted
Confirm that B Side (right) side cylinder is depleted by reading the pressure gauge. The exact pressure
will depend on the specific AK M80/86 model. The approximate pressure when the B Side cylinder is
depleted is given in
Table 3.
Rotate AK M80/86 crossover manifold “selection” knob counterclockwise until internal stop is contacted.
The knob will rotate approximately 270 degrees. The “IN SERVICE” label arrow on the knob should be
pointing toward the A Side (left) cylinder (approximately the 7:30 o’clock position).
Close B Side (right) cylinder valve and manual valve between B Side (right) cylinder and AK M80/86
crossover manifold. If required, operate equipment to purge line from cylinder to manifold.
Disconnect depleted B Side cylinder and connect full cylinder.
Open B Side (right) cylinder valve and manual valve between B Side (right) cylinder and AK M80/86
crossover manifold. Pressure on B Side (right) gauge should indicate the cylinder pressure.
AK M80/86 Model
B Side Depletion
Pressure, psig
AK M8002, M8602 100
AK M8006, M8606 100
AK M8010, M8610 150
AK M8015, M8615 250
AK M8025 475
Table 3. Approximate B Side Cylinder Depletion Pressure
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