Cressi-sub XS Compact Instructions for use

Regulators repair and maintenance
January 2014 Rev XSC /3 Ed. C /14 1
XS Compact 2nd stage

Regulators repair and maintenance
January 2014 Rev XSC /3 Ed. C /14 2
•This manual is intended for use by expert technicians who have already
received training in equipment repairs and maintenance from Cressi-sub;
•We decline all responsibility for any maintenance and/or repair performed by
personnel not authorized by Cressi-sub;
•Avoid performing maintenance and/or repair operations on the equipment
without the proper training required to conduct these operations;
•Users must never perform maintenance themselves; all maintenance must be
performed EXCLUSIVELY by an authorized Cressi-Sub center;
•If the information provided in this document is unclear or not fully intelligible,
please contact Cressi-sub before proceeding with any disassembly or
maintenance procedures;
•Before proceeding, Cressi-sub recommends that you read the following
document carefully to familiarize yourself with all the tools and techniques
needed to perform proper equipment maintenance and/or repair;
•Use this document as a guide during the various steps of maintaining and/or
repairing the equipment;
XS Compact 2nd stage
WARNING !

Regulators repair and maintenance
January 2014 Rev XSC /3 Ed. C /14 3
XS Compact 2nd stage
WARNING !
•All operations must be carried out strictly in the order provided in this
document. Failure to do so could lead the equipment to function poorly, or
worse, result in an accident;
•To prevent any assembly errors when performing maintenance and/or
repairs, we recommend using all the replacement parts provided by
Cressi-Sub in every operation;
•Pay special attention to the recommendations provided in the margin of
the figures that show the various sequences of equipment maintenance
and/or repair in order to avoid any problems that could result in an
accident;
•The document below in no way replaces the equipment's instruction
manual;
•The procedures described in this document are pertinent to and intended
only for the disassembly, maintenance, and assembly of equipment meant
for use with air (21% oxygen, 79% nitrogen);
•The instructions provided in this document are based on the most recent
information available about the equipment, and Cressi-sub reserves the
right to make changes at any time.

Regulators repair and maintenance
January 2014 Rev XSC /C Ed. C /14 4
XS Compact 2nd stage:
spare parts exploded diagram
XSCOMPACT 2nd STAGE HZ 780060
ANNUAL REPLACEMENT KIT CHART
(Real Size)

Regulators repair and maintenance
January 2014 Rev XSC /C Ed. C /14 5
XS Compact 2nd stage
•Use only original Cressi-sub replacement parts.
•Note: we recommend that complete maintenance be performed on the
regulator at least once a year, or more frequently if used intensively.
•XS Compact 2nd stage service kit
(Real Size)
(Real Size)
Go back to
HZ 780060

Regulators repair and maintenance
January 2014 Rev XSC /C Ed. C /14 6
XS Compact 2nd stage
•Annual Maintenance
•Cressi-Sub recommends complete regulator maintenance at least once a
year, or more frequently in the case of particularly intense use;
•Maintenance must include replacement of all components provided in the
annual equipment maintenance kit;
•The special tools for maintenance of this equipment are illustrated on page 8
of this document;
•Metal parts must be washed with hot water and neutral detergent and rinsed
in fresh water. Any concretions must be removed using ultrasound cleaning or
with diluted acid solutions, always followed by long and thorough rinsing
under running water;
•Do not use acids or solvents on rubber components;
•The new ORs must be greased with a thin layer of silicon grease: this
procedure reduces to a minimum the risk of damage during assembly;
•The metal threading can be lubricated with grease on the first two rings of
threading.

Regulators repair and maintenance
January 2014 Rev XSC /C Ed. C /14 7
XS Compact 2nd stage
•Annual Maintenance
•Use only original Cressi-sub replacement parts
•The procedures described in this document are pertinent to and intended
only for the disassembly, maintenance, and assembly of equipment meant
for use with air (21% oxygen, 79% nitrogen);
•Users must never perform maintenance themselves; all maintenance must
be performed EXCLUSIVELY by an authorized Cressi-Sub center;
•You can find your authorized Cressi-Sub center by asking your dealer, or
Cressi Sub S.p.A. itself by sending an e-mail to:
[email protected].

Regulators repair and maintenance
January 2014 Rev XSC /C Ed. C /14 8
XS Compact 2nd stage
Special tools

Regulators repair and maintenance
January 2014 Rev XSC /C Ed. C /14 9
XS Compact 2nd stage:
steps in disassembly
•Remove and replace all gaskets in the 2nd stage;
•To remove the O-Rings, use a plastic tool, or a metal one, but with a
rounded tip in order to avoid damaging the gasket seat;
•To replace the gaskets correctly, press on the sides of the O-Rings to create
a protuberance under which you can insert the tool with the rounded tip
used for removing O-Rings, as shown in the figure;
•Important: ONLY USE ORIGINAL CRESSI-SUB GASKETS

Regulators repair and maintenance
January 2014 Rev XSC /C Ed. C /14 10
XS Compact 2nd stage:
steps in disassembly
•Place a 19 mm wrench on the
2nd stage valve seat nut and at
the same time unscrew and
remove the low pressure hose
with a 17 mm wrench as shown
in the figure;
•Check that the low-pressure
hose shows no clear signs of
wear, cuts, or scrapes, especially
near the threaded connections.

Regulators repair and maintenance
January 2014 Rev XSC /C Ed. C /14 11
XS Compact 2nd stage:
steps in disassembly
•In the annual overhaul, the O-
Rings inside the hose must be
replaced, and check that the low
pressure hose shows no clear
signs of wear, cuts, or scrapes,
especially near the threaded
connections.

Regulators repair and maintenance
January 2014 Rev XSC /C Ed. C /14 12
XS Compact 2nd stage:
steps in disassembly
•Lever the dome lock retainer
and pull it out of the 2nd stage
as shown in the figure.
26 = HZ 780063

Regulators repair and maintenance
January 2014 Rev XSC /C Ed. C /14 13
XS Compact 2nd stage:
steps in disassembly
•Unscrew the dome as shown in the figure.

Regulators repair and maintenance
January 2014 Rev XSC /C Ed. C /14 14
XS Compact 2nd stage:
steps in disassembly
•Remove the dome, the button, and the button ring from the housing.

Regulators repair and maintenance
January 2014 Rev XSC /C Ed. C /14 15
XS Compact 2nd stage:
steps in disassembly
27 = HZ 780062
26 = 780063
23 = HZ 780069
24 = HZ 780068
25 = HZ 780067
Grigio / Gray
25 = HZ 780065
Rosa / Pink
25 = HZ 780064
Bianco / White
25 = HZ 780066
Giallo / Yellow
25 = HZ 780049
Lilla / Lilac

Regulators repair and maintenance
January 2014 Rev XSC /C Ed. C /14 16
XS Compact 2nd stage:
steps in disassembly
•Remove the
diaphragm from
the 2nd stage case. 23 = HZ 780069

Regulators repair and maintenance
January 2014 Rev XSC /C Ed. C /14 17
XS Compact 2nd stage:
steps in disassembly
•Push up on the end of the 2nd stage
case side cap fastening tab while
simultaneously pushing it out of the
regulator, as shown in the figure.

Regulators repair and maintenance
January 2014 Rev XSC /C Ed. C /14 18
XS Compact 2nd stage:
steps in disassembly
•Once the side cap is removed, fully unscrew the 5.5 mm nut
using the socket screwdriver, inserting it through the hole in
the case.
HZ 709009

Regulators repair and maintenance
January 2014 Rev XSC /C Ed. C /14 19
XS Compact 2nd stage:
steps in disassembly
•Then remove the lever, the washer, and the nut from the 2nd stage.

Regulators repair and maintenance
January 2014 Rev XSC /C Ed. C /14 20
XS Compact 2nd stage:
steps in disassembly
HZ 709009
11K = HZ 746094
12 = HZ 780074