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Regulator Owner’s Manual

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b. If it is not feasible to soak the regulator while it is attached to a

cylinder, it may be soaked unpressurised – provided that the dust cap

is securely sealed over the inlet, and the second stage purge buttons

are not depressed while the regulator is submerged or wet.

NOTE: When soaking or rinsing an adjustable model regulator

unpressurised, check to ensure that the second stage inhalation

control knob is turned completely “in” (clockwise) to prevent moisture

from entering the valve and LP hose.

CAUTION! DO NOT loosen the first stage yoke screw, depress the

second stage purge button, or turn out the inhalation control knob (if

present) if the regulator is submerged unpressurised. Doing so will

allow the entrance of moisture, and will require that the regulator be

returned to an authorised dealer for service.

4. While the regulator is soaking, move the IVS/RVS control switch (if

present) back and forth several times from the “MIN” (–) to the “MAX”

(+) settings. You may also turn the inhalation control knob slightly back

and forth—no more than 4 turns. This action will help to loosen any

salt or mineral deposits that may remain lodged in the second stage.

5. After the regulator has been properly soaked, it is important to

rinse it vigorously by flushing the first stage ambient chamber (non-

environmentally sealed models only), the second stage mouthpiece,

and the openings in the second stage front cover with a pressurised

stream of water. This will remove any deposits of salt and minerals

that were loosened during soaking. If the regulator is not pressurised,

do not press the purge button underwater. Moisture may otherwise

enter the valves, which will require that the regulator be returned to an

authorised dealer for service.

6. Wipe the regulator as dry as possible and hang by the first stage to

ensure that all remaining moisture drains from the second stages.

Apeks DS4 User Manual

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