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Amendments and approval of this document can only be carried out by the relevant people listed on the Approved list of signatures, which is listed in the Apeks Quality Manual. To instigate a change, a Task / Change request form, (Form No.
Ring to create a isolated from other parts to prevent damage during the cleaning procedure. protrusion. Grab Use only genuine Apeks parts provided in the 2nd ‘O’ Ring or insert stage service kit (AP0219). DO NOT attempt to ‘O’ Ring tool at substitute an Apeks part with another manufacturer’s,...
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Removal of Front Cover & Diaphragm Removal of hose 1. Using a 13/16” spanner 6. To remove the XL4 Clamp Ring (1) place your thumb on hold the Inlet Shroud (18) the top of the clamp ring as shown on the first image below.
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XL4 2nd Stage Maintenance Manual 8. To remove the Venturi Lever (9) from the Case (13), 12. Using a 5mm Hex Key (AT37) unscrew the Valve Seat position the lever vertically so that the tab is visible as (16) from the Inlet Shroud Fitting (20). Once satisfied that shown in the first image below.
XL4 2nd Stage Maintenance Manual INSPECTION PROCEDURES NOTE: There is no need to remove the Micro Adjuster Screw NOTE: Before performing any reassembly (21) from the Spindle procedures, some parts must be inspected. The Adjuster Sleeve (22). following section details the parts and areas that must be checked.
XL4 2nd Stage Maintenance Manual REASSEMBLY PROCEDURES CAUTION: Ensure that the Lever is not twisted and that legs are parallel. Lever should appear as that shown on the left, not Assembling of the Spindle Body as shown on the right. If necessary, gently squeeze legs together to straighten.
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XL4 2nd Stage Maintenance Manual 7. Using the opposite end of the Cracking Adjuster tool 11. Screw the Inlet Fitting assembly into the Spindle Body (AT76) lined up with the Spindle Adjuster Sleeve (22) push (14) and torque to 3 Nm (2.2ft.lb) using a 13/16” socket.
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XL4 2nd Stage Maintenance Manual 14 cont’d. Once the 4. If equipped with a diaphragm is secure, Comfo-bite Mouthpiece, gently grip the diaphragm make sure the ‘bridge’ pad between the thumb of the Mouthpiece (11) is and forefinger, and gently facing upward.
XL4 2nd Stage Maintenance Manual FINAL TESTING NOTE: Keep the puck in place whilst making adjustments WARNING: Compressed air can be highly NOTE: “NO GAS” will be visible when performing gas explosive and is dangerous if misused. flow setting. Ensure the cylinder valve is opened slowly.
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XL4 2nd Stage Maintenance Manual Second Stage Opening Effort Test Immersion Test 1. Insert the Micro Adjuster Tool (AT76) into the open side of 1. After disconnecting the Case (13), making sure that the hexagonal bit engages the regulator from the into the Micro Adjuster Screw (21).
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XL4 2nd Stage Maintenance Manual Table 1 - Troubleshooting Guide SYMPTOM POSSIBLE CAUSE TREATMENT 1. Excessively high first-stage 1. Refer to first-stage intermediate pressure. Troubleshooting Guide. 2. Silicone seating (27) damaged or 2. Replace with Silicone Seating. worn. 3. Reset Seat preliminary 3.
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XL4 2nd Stage Maintenance Manual Table 2 - Recommended Tool List PART # DESCRIPTION APPLICATION IMAGE AT48 1ST AND 2ND STAGE TOOL REMOVING / INSERTING LEVER AT71 INNER LOCKING RING TOOL REMOVAL / INSERTING INNER LOCKING RING AT72 INLINE ADJUSTING TOOL...
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XL4 2nd Stage Maintenance Manual Table 3 - Recommended Lubricants, Cleaning & Disinfectant Solutions LUBRICANTS APPLICATIONS SOURCE Christo-Lube MCG111 All o rings. Oxygen Compatible Aqua Lung # 820466 or 480025 or AP1495 PerFluroLube 20/1 All o rings. Oxygen Compatible Aqua Lung # AP1493 CAUTION: Silicone rubber requires no lubrication or preservative treatment.
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XL4 2nd Stage Maintenance Manual Table 3 - Recommended Lubricants, Cleaning & Disinfectant Solutions Continued Oxygen Cleaning Solutions Use as Trained Promoclean TP1113 or TP108 (diluted Nitrox/Oxygen Cleaning Inventec Performance Chemicals SA with warm water to a maximum of 5%)
XL4 2nd Stage Maintenance Manual Cleaning & Lubrication Procedure WARNING: Always wear the appropriate Personal Protective Equipment such as medical gloves and safety glasses. General Cleaning of Brass and Stainless-Steel Parts 1. Pre-clean by soaking in warm soapy water*. If required soak in NETALU diluted to 25%, or other diluted general cleaning solutions as recommended and shown in the Recommended Cleaning Solutions table.
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Although regulator second stage components are not exposed to high pressure oxygen/nitrox, Aqua Lung and Apeks recommends that the same cleaning procedure is followed for the complete regulator. This prevents the cross contamination and guarantees the cleanliness of the entire regulator.
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XL4 2nd Stage Maintenance Manual Wiping To wipe parts, use a white filter paper, a pure cotton cloth or any other material that is lint free and does not produce fluff. Inspection Visually check under a white light (daylight or artificial light).
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XL4 2nd Stage Maintenance Manual Table 4 - Torque Specifications PART NUMBER DESCRIPTION / KEY NUMBER TORQUE AP9006 Inlet Shroud (18) 3Nm / 2.2ft.lb Table 5 - Test Bench Specifications TEST CONDITION ACCEPTABLE RANGE High Pressure > 50 bar gauge +1.4 to +1.6 in.
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XL4 2nd Stage Maintenance Manual XL4 2nd Stage Exploded Parts Diagram All items in bold italics to be replaced when servicing. Service kit AP0254 AP9003 XL4 Clamp Ring AP2035 Lever AP9005 Purge Button AP7563 Valve Seat AP9005G Purge Button Green...
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