12.0 CYLINDER INSPECTION GUIDELINES
12.1 Cuts, Scuffs and Scratches
12.1.1 Usually these are confined to clear coat and are less than .005” deep. Flaws in clear
coat alone are acceptable and repairable.
12.1.2 Flaws in clear coat can be repaired with any 5 minute epoxy, and then hydrostatically
tested by a trained and authorized test facility before returning to service.
12.1.3 Rejectable flaws have visible fiber damage. If damage extends into the fibers replace
the cylinder and destroy the damaged cylinder.
12.1.4 Heat or fire damage that causes discoloration or charring is cause for
rejecting the cylinder.
12.2 Delamination
12.2.1 Delamination calls for rejecting the cylinder.
12.3 Impact
12.3.1 Look for fiber delamination; if delaminated, reject cylinder.
12.3.2 Transverse fiber breaks call for rejecting the cylinder.
12.3.3 Small impacts will show white spots without significant delamination. If no fiber
breakage is noted and damage is less than 1/2” diameter and there is no dent, cylinder
may be hydrostatically tested and returned to service.
12.4 Internal inspection (to be performed by trained and authorized inspection center only)
12.4.1. Check for cracks in the neck area. If cracks are present reject the cylinder.
12.4.2. Check cylinder walls for corrosion. If corrosion is present have an authorized test
facility remove the corrosion and check for cylinder wall pitting damage.
12.4.2.1. If pitting exceeds the allowable limits reject the cylinder. Limits are not
printed here as a properly trained inspector will have this data available
and it is subject to change .
If there is any question as to the integrity of the cylinder either replace it or return it to
Breathing Air Systems (614-864-1235 or [email protected]) for evaluation.
13.0 WHER FURTHER MAINTENANCE IS SCHEDULED OR REQUIRED, REMOVE
THE UNIT FROM THE CASE.
13.1. With the lid closed and latched, turn the MRS III over. Remove the four screws from the back
of the case. (figure 27).
13.2. Turn case over, open lid, and lift the unit out of the case (figure 28).
13.2.1 Be sure to support the plumbing with your hand as you lift the frame.
14.0 GAUGE CALIBRATION
: The gauges (GAG1) on this unit are of a sealed design. You have to
verify the accuracy. Gauge calibration in accordance with local instructions. Acceptable variance is
100psi in the center of the range (1500psi to 4500psi), or ±200psi at the bottom or top of range. If not
within these limits they will have to be replaced.
14.1. To verify the calibration on these gauges (GAG1), they may be removed from the system, or
they can be checked in the system if the calibration technician has the proper connectors.
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