APTech Series AK M60 - Manual (Page 10)

AK M60 Manual P/N 00-15000012 Rev 1
Page 10 of 13
Close all system valves.
Rotate source selection knob on AK M60 crossover regulator clockwise 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 Source B (right) cylinder (approximately the 4:30 o’clock position).
Open Source B cylinder valve and manual valve between Source B (right) cylinder and AK M60
crossover manifold. Pressure on Source B (right) gauge should indicate the cylinder pressure.
Open Source A cylinder valve and manual valve between Source A (left) cylinder and AK M60 crossover
manifold. Pressure on Source A (left) gauge should indicate the cylinder pressure.
Check all system connections for leaks. This can be done with soap solution on each connection, by
listening for an audible hissing sound, using an appropriate gas detector, or a pressure decay test that
monitors system pressure gauges.
5.1.3. Source B (right) Cylinder Depleted
Confirm that Source B (right) cylinder is depleted by reading the pressure gauge. The exact pressure will
depend on the specific AK M60 model. The approximate pressure when the Source B cylinder is depleted
is given in Table 2.
Rotate source selection knob on AK M60 crossover manifold 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 Source A (left) cylinder (approximately the 7:30 o’clock position).
Close Source B (right) cylinder valve and manual valve between Source B (right) cylinder and AK M60
crossover manifold. If required, operate equipment to purge line from cylinder to manifold.
Disconnect depleted Source B cylinder and connect full cylinder.
Open Source B (right) cylinder valve and manual valve between Source B (right) cylinder and AK M60
crossover manifold. Pressure on Source B (right) gauge should indicate the full cylinder pressure.
AK M80 Model Source B Depletion
Pressure, psig
AK M6010 100
AK M6015 150
AK M6025 250
Table 2. Approximate Source B Cylinder Depletion Pressure
5.1.4. Source A (left) Cylinder Depleted
Confirm that Source A (left) cylinder is depleted by reading the pressure gauge. The exact pressure will
depend on the specific AK M60 model. The approximate pressure when the Source A cylinder is depleted
is given in Table 3.
Rotate AK M60 crossover manifold “selection” knob clockwise until internal stop is contacted. The knob
will rotate approximately 270 degrees. The “IN SERVICE” label arrow on the knob should be pointing at
approximately 4:30 o’clock position toward the Source B (right) cylinder.
Close Source A (left) cylinder valve and manual valve between Source A (left) cylinder and AK M60
crossover manifold. If required, operate equipment to purge line from cylinder to manifold.