After removing the front cover ring, leave the front cover in place, and push it tight into your palm to
unscrew it. If the front cover is tight, place the 2nd stage rim clamp tool around the front cover, which will
allow you to apply extra leverage to loosen the front, cover ring. The front cover will unscrew the diaphragm
retaining ring, if you are encountering troubles loosing the retaining ring use the 2nd stage rim clamp tool by
engaging the pins into the slots of the diaphragm retaining ring. Lift out the thrust washer and diaphragm.
Assembly is the reverse, replace the diaphragm edge carefully into the groove in the case. Replace the
thrust washer on top of the diaphragm. Install the front cover into the groove of the diaphragm retaining ring.
Use the palm of your hand to tighten the cover and ring together snugly into the case. Remove the cover from
the retaining ring and reinstall it so the logo is straight. Screw on the outer front cover ring hand tight, then
turn the front cover until straight and tighten the front cover ring down completely.
Front cover and diaphragm-removal/replacement (M1)
·
Unscrew the front cover and cover ring as one assembly.
·
Unscrew the diaphragm retaining ring with the 2nd stage rim clamp tool.
·
Lift out the thrust washer and diaphragm. If the cover ring cannot be removed by hand,
use the 2nd stage rim clamp tool.
After removing the front cover, Unscrew the diaphragm retaining ring by engaging the pins into the slots of
the diaphragm retaining ring with the 2nd stage rim clamp tool. Lift out the thrust washer and diaphragm.
Assembly is the reverse, replace the diaphragm edge carefully into the groove in the case. Replace the
thrust washer on top of the diaphragm. Install the diaphragm retaining ring and tighten with the 2nd stage rim
clamp tool.
Screw on the outer front cover and ring hand tight, then turn the front cover until straight.
2. Rear exhaust cover and exhaust valve-removal/replacement
The silicone rubber exhaust valve and rear exhaust cover should never need replacement, and it is not
normally necessary to remove these components.
·
Locate the two slots in the bottom front of the case where the case and rear cover meet.
·
Use a flat bladed screwdriver that is close to the same width as the recess and pry the cover up slowly
(do not twist the screwdriver) to unhook the snap. Repeat with the other side then pull the cover off.
·
To reassemble, engage the top 2 tabs of the cover and snap the bottom of the cover over the case.
3. Automatic flow control (AFC) check/disassembly
·
To check, manually push the plunger back and forth into the case and check to see if it returns when released.
The AFC will operate as long as the AFC diaphragm does not leak, and it generally does not need to be
serviced. It can be tested by checking its position at the surface and when pressurized in water during actual
use, or in a test chamber. It should be fully extended across the mouthpiece at the surface, and fully retracted
at about 60 feet.
·
To disassemble, remove the AFC cover with a spanner (2nd stage T-handle tool).
·
Withdraw the diaphragm and plunger as an assembly.
·
Clean off the parts, check the diaphragm for tears and reassemble.
If the diaphragm is replaced, pull the stem of the diaphragm through the hole in the blade and
cut off the excess stem leaving about 1/8" exposed.
4. Inlet tube: removal from case
·
Remove the hose, front cover, diaphragm and jam nut. There is no jam nut used with atomic comfort swivel
hoses.
·
Push the inlet tube out towards the knob end until the splines on the knob sleeve are clear of the case.
·
Unscrew the knob assembly completely off the inlet tube.
4
ATOMIC AQUATICS FIRST AND SECOND STAGE REGULATORS MAINTENANCE PROCEDURES · 9/2003
