Repair manual
Table Of Contents
- Contents
- Introduction
- Safety Precautions
- General Procedures
- Maintenance Schedules
- Initial Inspection and Pre-Test
- Infrequently Used Regulators
- Work Area & Required Tools
- O-ring Removal
- Lubrication
- Table 1 – Recommended Tools
- Table 2 – Lubricant and Cleaner
- Disassembly Procedures
- Cleaning & Inspection Procedures
- Reassembly Procedures
- Final Adjustment and Testing Procedures
- Table 3 – Troubleshooting
- Repair & Replacement Parts
- Schematic Drawing
Apeks Regulator Service and Repair Manual
15
Figure 14
Tightening Environmental End Cap
5. When the intermediate pressure has been determined to be stable at
120 psi or less, increase the inlet pressure to between 2,500 – 3,000
psi while checking the IP test gauge once again to ensure that the
intermediate pressure does not rise above 135 psi. If the intermediate
pressure rises above 135 psi, immediately purge the second stage, or
re-open the bleed valve of the test gauge, and shut off the air supply.
Refer directly to Table 3 -
Troubleshooting, and remedy as needed.
6. Repeat the adjustment procedure in step 4 to adjust the first stage
intermediate pressure to exactly 135 psi. Repeatedly purge the sec-
ond stage or open and shut the test gauge bleed valve at least 15 times
to ensure that the intermediate pressure locks up consistently and re-
mains stable at 135 (±5) psi, with no signs of creeping or fluctuation.
7. FINAL ASSEMBLY
a. While the regulator is still pressurized with 2,500 – 3,000 psi,
insert the stem of the hydrostatic transmitter(4) into the hex open-
ing of the spring adjuster.
b. Lay the hydrostatic diaphragm(2) inside the environmental end
cap(1), and tamp it down past the threads to ensure that it seats
evenly against the sealing surface.
c. Mate the environmental end cap onto the diaphragm clamp and
turn it clockwise by hand until snug. Apply the spanner tool to
tighten the end cap clockwise until it is completely snug and flush
(metal against metal) with the diaphragm clamp (see Fig. 14).
d. Cycle the regulator to ensure that the intermediate pressure has
not dropped below 135 psi. If necessary, depressurize the regula-
tor and disassemble the environmental kit to reset the intermedi-
ate pressure, and repeat steps 6-7.
8. After performing the overhaul and adjustment procedures outlined in
the Apeks Second Stage Service & Repair Manual, connect the first
and second stage regulators to perform the following tests:
9.
External Leak Test – Connect the regulator to a cylinder which con-
tains 2,500 - 3,000 psi, and open the cylinder valve to pressurize the
system. Submerge the cylinder and regulator in a test tank of fresh
water, and observe closely for up to one minute to check for the for-
mation of bubbles. If a steady stream of bubbles is present, the sys-
tem must be disassembled to check sealing surfaces, assembly se-
quence, and component positioning to correct as needed.
Before disassembling to correct any leaks, rinse the entire regu-
lator thoroughly with fresh water and blow out all residual mois-
ture with filtered, low-pressure (30 psi) air. Disassemble and
remedy the problem, referring to Table 3 –
Troubleshooting.
10.
Subjective Breathing Test – Depress the second stage purge to ensure
that the volume of airflow is adequate to clear the second stage. Then,
breathe deeply from the mouthpiece. A properly serviced and ad-
justed regulator should deliver a smooth, uninterrupted airflow upon
deep inhalation; without excessive effort, hesitation, or freeflow. If
any problems occur, refer to Table 3 –
Troubleshooting.
This concludes the annual service procedures for
The Apeks TX100 First Stage Regulator.
NOTE