Apeks XTX FSR User Manual

11
XTX FSR & FST First Stage Regulator Maintenance Manual
IMMERSION TEST
With the Blanking Plugs and at least one properly
adjusted second stage installed, slowly open
the cylinder valve and pressurise the rst stage.
Completely Submerge the rst stage in fresh water
and check for leaks.
NOTE: Do not confuse bubbles from trapped air with
a true air leak. If there is an air leak, bubbles will come
out in a steady constant stream.
Assuming that there are no leaks, close the cylinder
valve and depressurise the regulator. Remove the rst
stage from the valve and secure the Protective Cap
(22) in place with the Yoke Clamp Screw (24). If the
regulator has a DIN connection replace the Protective
DIN Cap (34).
If a leak is detected, note the source of the leak and
refer to the troubleshooting table on page 12 for
possible causes and corrective actions.
This Ends Testing
This Ends Reassembly
4. Assuming there are no leaks, close the cylinder valve
and depressurise the regulator by opening the gauge
relief valve or by pressing the purge button of the
second stage regulator. Adjust the medium pressure
by turning the Spring Adjuster (4): Turning in the
Spring Adjuster increases the MP; Turning out the
Spring Adjuster decreases the MP. Turn the Spring
Adjuster in 1/8th turn increments and purge the relief
valve several times after each adjustment. When the
MP is between 9 and 10 bar , purge the relief valve
on and off 10-15 times. After cycling, watch the gauge
needle. The rst stage MP should “lock-up” between 9
and 10 bar. Make any adjustments as necessary. Allow
the rst stage to stay pressurised for several minutes
and check the MP again to make sure it remains
“locked-up” between 9 and 10 bar. If the MP creeps
upward more than 0.25 bar, then there is a leak. Refer
to the troubleshooting table for possible causes.
2. Thread the Environmental End Cap (1) onto the
Diaphragm Clamp (6) until hand tight. Using the C
Spanner (PN AT30), tighten the Environmental End Cap
(1) until there is metal to metal contact. Re-check the
medium pressure, making sure that it is still between 9
and 10 bar.
NOTE: Lightly press the diaphragm whilst tightening
the end cap, once the rst stage has been depressurised
the diaphragm will assume a concaved positioning for
added protection.
3. Close the cylinder valve and depressurise the
regulator. Remove the test gauge and reinstall the
Blanking Plug.

Apeks XTX FSR Specifications

General

Brand	Apeks
Model	XTX FSR
Category	Controller
Language	English