Danfoss APP 11-22 High Pressure Pump Photo Guide for Claims and Repairs

General Information

This guide outlines the necessary documentation and photographic evidence required when submitting a claim or requesting a repair for Danfoss APP 11-22 high-pressure pumps. To ensure a swift review by a Danfoss service technician, it is mandatory to provide comprehensive information and photos of all internal components, not just those that appear damaged.

Required Documentation

When submitting a claim, users must complete the Claim/Repair Information Document. Key data points include:

• Pump Product Information: Pump type, Danfoss code number, and serial number.
• Operational Conditions: Inlet and outlet pressure, RPM, total hours of operation, filtration specifications (nominal or absolute), flow rate, water temperature, and TDS levels.
• Additional Context: Usage of permeate flush, average number of daily starts, and VFD ramp-up/down times.
• Fault Description: A detailed explanation of the system or component failure and any troubleshooting steps already performed.

Component Inspection and Photography

For technical review, clear photographs of specific internal parts are required. Ensure the following components are documented during disassembly:

• Coupling: Document the coupling distance prior to disassembly.
• Shaft Seal: Capture images of the dynamic rubber bellow, the static part surface, and the dynamic part.
• Piston Shoe: Provide views of the sliding face (including close-ups), the back side, and the joint bearing.
• Piston Rod: Document the surface condition.
• Swash Plate: Photograph the surface and the internal bearing area.
• Retainer Ball and Plate: Document the retainer guide ball, the upper side of the plate, and internal/centre bearings.
• Port Plate: Capture the upper side, close-up details, and the bearing surface.
• Valve Plate: Document the surface and the thrust pad area.
• Housing and Cylinder Barrel: Provide images of the housing, the outer surface of the cylinder barrel, internal bushings, the shaft surface, and the pins/springs assembly.