R-100
BALANCED PISTON FIRST STAGE REGULATOR
GENERAL (USER) RECOMMENDED MAINTENANCE
NOTE
Do not depress the purge button of the second stage while rinsing or soaking.
This will help prevent water from entering the valve mechanism or intermediate
pressure hose causing corrosion or deposits
1.
Before storing the regulator, hang it with the second stage down to insure
drainage and ample time to completely dry all components. If a cylinder is
available, the user may wish to install the regulator and purge air through
the system to insure no water remains within the valve mechanism prior
to storage.
EMPHASIZE THE FOLLOWING TO YOUR CUSTOMERS:
DO NOT expose the regulator to extreme heat or direct sunlight when not in use.
Temperatures exceeding 80oC (180oF) for extend periods of time may cause
permanent damage to some internal valve components leading to a lack of
performance or failure. If you suspect your regulator has been exposed to
excessive heat, please have it examined by your authorised TUSA service
centre.
DO NOT leave the regulator pressurized or attached to a SCUBA cylinder for an
extended period of time when not in use.
DO NOT lift the SCUBA cylinder by using the regulator hoses or first stage as a
handle. Always secure the cylinder to prevent it from tipping over and damaging
the regulator while it is attached.
3.1
DETERMINING SERVICE INTERVALS AND CYCLE LIFE
TUSA recommends that the Service Technician utilize the following guidelines to
determine service intervals and extent of service required for the customers’
regulator. Most components in a regulator have very high expected usable life
based on the number of breathing cycles and exposure of the equipment.
The following calculation is meant to educate the Service Technician on how
many cycles (breathing) a regulator may see from average use.
CYCLES =
No. of
DIVE DAYS per YEAR X
No. of
DIVE HOURS per DAY
X
20
BREATHS per MINUTE X
60
MIN per HOUR
For example: If you dived 25 days last year for 3 hours per day:
CYCLES =
25
DAYS/YEAR X
3
HOURS/DAY X
20
BREATHS/MIN X
60
MIN/HOUR
CYCLES =
25
X
3
X
20
X
60
BREATHING CYCLES = 90,000 PER YEAR
Revised v1.0-2000
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