Danfoss AKV 10P and AKV 10PS Electric Expansion Valve Service Guide

Product Overview

This service guide covers the maintenance and spare parts replacement for Danfoss electric expansion valves, specifically types AKV 10P and AKV 10PS. These valves are designed for food retail applications. The guide provides instructions for replacing critical wear parts, including the orifice, armature, and filter.

Safety and Compatibility

Important: Never use AKV 10P0-8 orifice or armature kits for AKV 10PS4-8 models, or vice versa. These components are not interchangeable. Always replace wear parts whenever the valve is disassembled. Ensure that the O-ring is installed as it is mandatory for proper operation.

Maintenance Procedures

Maintenance involves the replacement of internal components to ensure optimal valve performance. When replacing the orifice, always use a new one. The filter replacement requires a specific tool to extract the old filter from the valve housing. Before installing a new filter, thoroughly clean the bottom of the valve housing. Note that the filter must be inserted with the smaller hole/diameter facing downwards.

Coil Mounting

The guide details the mounting and dismounting of both standard and UL-rated coils. A critical safety instruction is to never energize the power supply before the coil is fully mounted on the valve. An optional O-ring is recommended for coil mounting to reduce vibrations, though it is not required for sealing purposes.

Torque Specifications

Proper tightening is essential for valve integrity. The guide specifies a torque of 10 Nm (7.4 ft-lbf) for armature components and 75 Nm (55 ft-lbf) for orifice and filter housing assemblies.