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
14
Apeks Regulator Service and Repair Manual
Figure 13
Adjustment Screw Pre-setting
40 (±5) inch-lbs
16. Loosen the vice to remove the first stage, and remove the vise mount-
ing tool. Install all O-rings(18, 20, 22) onto all hoses and port plugs(19,
21, 23). Install all LP and HP hoses and port plugs into the valve
body, and tighten the port plugs clockwise until snug. Apply a torque
wrench with respective crow foot to tighten each hose at the first stage
fitting to a torque measurement of 40 (±5) inch-pounds.
FINAL ADJUSTMENT AND TESTING PROCEDURES
1. Connect the intermediate pressure test gauge either to a quick-dis-
connect inflator hose, or to the female fitting of a second stage LP
hose, depending on the connection of the test gauge. Check to ensure
there are no open ports and that all hoses are securely connected at
both ends, with no open fittings.
Before testing intermediate pressure, it is important to connect the first
stage to a fully assembled and properly adjusted second stage. This
will provide a safety relief valve if the intermediate pressure exceeds
155-170 psi. If a properly adjusted second stage is not available, be
sure to open the bleed valve of the test gauge before pressurizing. Fail-
ure to relieve intermediate pressure in excess of 400 psi may result in
damage to the test gauge or LP hose.
2. Check to ensure that the first stage spring adjuster(5) is correctly set
to its preliminary adjustment; exactly 4" (6mm) below the top rim of
the diaphragm clamp(6). (See Fig. 13.)
3. Connect the first stage to a filtered air source of 500 psi, and slowly
pressurize the first stage. While closely monitoring the IP test gauge
to ensure that the intermediate pressure does not rise above 120 psi,
slowly turn the knob of the bleed valve clockwise until it is shut.
If a second stage is not connected to the first stage and the intermedi-
ate pressure rises above 200 psi, immediately reopen the bleed valve of
the test gauge and shut off the air supply. Refer directly to Table 3 -
Troubleshooting, and remedy as needed before proceeding further.
4. When the intermediate pressure has stabilized below 120 psi, apply a
6mm hex key to turn the spring adjuster clockwise in small incre-
ments of adjustment. While turning the spring adjuster, it is impor-
tant to simultaneously purge the second stage or briefly turn the test
gauge bleed valve open and shut. Monitor the test gauge while ad-
justing in this manner until the intermediate pressure locks up be-
tween 115-120 psi.
Failure to cycle the regulator during adjustment can result in a false
reading of the intermediate-pressure.
Figure 12
Torqueing Yoke Connector
44
44
4"