Sherwood MAXIMUS SRB3600 User Manual download pdf (Page 23)

7.0 HELPFUL HINTS

7.1 TROUBLESHOOTING REGULATORS

POSSIBLE CAUSE

RECOMMENDED ACTION

HIGH INSTALLATION EFFORT AT DEPTH:

a. Inlet filter clogged. Replace the filter.

b. No air flowing through the dry air bleed Check the flow rate coming out of the

system. one-way bleed valve . If no or low

air flow is detected, clean the flow

element in the piston, or replace the piston.

c. High pressure air supply insufficient. Verify the supply air pressure. Make sure

the customer had the tank valve turned all

the way on.

d. Second stage improperly adjusted. Repeat Steps 1 through 12 in

Section 6.4,

Set-Up of Second Stage.

FREE FLOWING:

a. Intermediate pressure too high. Adjust the first stage's outlet pressure to

below 150 psig.

b. Damaged or worn HP piston seat. Replace seat (p/n 3801-5).

This also gives high intermediate pressure.

c. Damaged or worn HP poppet stem seat. Replace seat (p/n 978-9BN).

d. Nicked or corroded orifice sealing. Dress the orifices in the first and second

stages with a polishing stick, or replace the

orifices.

e. Demand lever in second stage bent too high. Adjust or replace the lever.

f. Weak spring in second stage. Replace the spring.

g. Second stage improperly adjusted. Repeat Steps 1 through 12 in

Section 6.4,

Set-Up of Second Stage.

h. Parts in the second stage have been Allow the second stage to warm up to

severely chilled due to repeated purging room temperature. This chilling will not

and have shrunk, allowing air to flow. occur in normal diving conditions.

WET BREATHING:

a. Improper clearing, or diver diving in total Instruct the diver on proper clearing

head-down position. technique.

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Sherwood MAXIMUS SRB3600 User Manual Page 23