AP Diving Ltd. APV200 Inflator Maintenance Manual
Page 30 of 30
7. Testing Instructions
7.1 Test spring operation and hose sealing by pushing complete hose on
and off the Inflator unit
- If assembled correctly, the sliding collar should jump forward while pushing / sliding it
onto inlet stem of the inflator.
- If assembled correctly, pulling back the sliding collar will release the hose from the
Inflator.
7.2 Test for leaks and proper operation
1. With the MP hose disconnected, close up the BCD/wing convoluted hose inlet with your
thumb while simultaneously pressing on the big grey deflation button with your index
finger from the same hand. Now try to breathe in or out through the mouthpiece: no air
should come in or out.
2. Keep blocking the big BCD/wing convoluted hose inlet with your thumb, and also keep
pressing the big grey deflation with your index finger. Now press on the blue inflation
button. Now breathe in again through the mouthpiece: you should be able to breath in
and out (with considerable resistance) with air coming only through the MP hose inlet.
3. Release all fingers, except the index finger that keeps pressing on the big grey deflation
button. Breathe in and out through the mouthpiece: you should be able to breath in and
out without resistance, with air coming in only through the BCD/wing convoluted hose
entrance. Check that by blocking the BCD/wing convoluted hose entrance temporarily
with your thumb.
4. With all fingers released, blow on the BCD/wing convoluted hose inlet. The air flow
should be blocked. Now depress the big grey deflation button. Air should be able to flow
freely without resistance through the inflator, escaping through the mouthpiece.
5. Connect the AP50 MP hose to an MP air source (around 9 bar). Submerge it in water.
No bubbles should come out.
6. Connect the AP50 MP hose a few times to the Inflator and disconnect. This should be a
smooth operation and no leaks should be present. Check by submerging in water.
7. With the EV50 MP hose connected, press on the blue inflation button. Air should come
out of the inflator. When you stop pressing the blue button, the gas flow should stop.
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