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Danfoss APP series User Manual

Danfoss APP series
118 pages
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© Danfoss | 2023.03 180R9346 | AQ240486503020en-001702 | 1 hpp.danfoss.com
Operation guide
APP pumps with FDA approved seals
APP 53 / APP 65 / APP 78 / APP 86 / APP 92
Installation, Operation and
Maintenance Manual

Table of Contents

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Danfoss APP series Specifications

General IconGeneral
BrandDanfoss
ModelAPP series
CategoryWater Pump
LanguageEnglish

Summary

Pump Unit Operation

Pump Unit Maintenance and Service

Troubleshooting and Scrapping Criteria

Operational Conditions Causing Failures

Lists operational conditions that can lead to pump failures.

Mechanical and Electrical Failures

Information on potential mechanical and electrical failures and associated risks.

Safety Precautions

General Safety Information

Dangers arising from not following instructions and general safety precautions.

Technical Data

Approved Applications and Limits

Specifies approved uses and operational boundaries for the APP pumps.

Arrival, Transportation, Handling, Lifting, and Storage

Installation and Commissioning

Cleanliness Requirements

Emphasizes the importance of cleanliness for pump and system integrity.

Pump Commissioning and Instruction

Step-by-step guide for commissioning the pump unit and instructing personnel.

Pump Unit Maintenance

Disassembling and Assembling the Pump Unit

Instructions for disassembling and reassembling the pump unit.

APP 53-92 Technical Data

Pump Specifications

Detailed technical specifications for APP 53-92 pump sizes.

Performance Curves

Temperature and Corrosion

Installation Guidance

Filtration Requirements

Importance of proper filtration for pump performance, maintenance, and warranty.

Service and Warranty

Pump Shutdown and Maintenance

Recommended procedures for shutting down, flushing, and maintaining the pump.

System Design

Building Up Pump Unit with BoWex Coupling

Building Up Pump Unit with Jaw Coupling

Initial Start-up Procedures

Pump Operation

Hoyer Motors: General Information

Electrical Connections and Maintenance

Safety for electrical connections and regular motor inspection and maintenance.

Hoyer Motors: Special ATEX Notes

BoWex-ELASTIC® Coupling Technical Data

BoWex-ELASTIC® Coupling Advice

BoWex-ELASTIC® Coupling Safety

BoWex-ELASTIC® Coupling Assembly

BoWex-ELASTIC® Coupling Start-up

BoWex-ELASTIC® Coupling Breakdowns

Causes and Elimination of Failures

Identifies common failures, their causes, and elimination steps.

BoWex-ELASTIC® Coupling Enclosure A

Intended Use in Hazardous Locations

Specific conditions of operation for couplings in potentially explosive atmospheres.

Inspection Intervals for Explosive Atmospheres

Inspection schedules for couplings used in potentially explosive atmospheres.

Torsional Backlash Inspection

Procedure for inspecting torsional backlash to ensure coupling integrity.

Marking for Potentially Explosive Atmospheres

Details of ATEX marking for couplings used in potentially explosive atmospheres.

Standard Wear Values

Information on wear limits for elastomer parts and torsional backlash.

Appendix 1: Piston Wear

Evaluating Piston Wear

Guidance on evaluating piston wear and determining replacement needs.

Exploded View: APP 53-92 (Serial No. 07+)

Exploded View: APP 53-86 (Serial No. up to 06)

Troubleshooting Guide Overview

Trouble Shooting Fish Bone Chart

Visual representation of potential pump issues and their causes.

Troubleshooting Open-Ended Water Systems

No Flow/No Pressure Issues

Troubleshooting steps for pumps with no flow or no pressure output.

Dry Running and Pump Reversing Diagnosis

Troubleshooting steps for dry running and pump reversing due to incorrect motor rotation.

Pump Wear and Low Inlet Pressure

Troubleshooting steps for pump wear and low inlet pressure issues.

No Water Supply Diagnosis

Troubleshooting steps for systems with no water supply.

Reduced Flow/Pressure Issues

Troubleshooting steps for pumps with reduced flow or pressure.

Motor and Pump Rotation Issues

Troubleshooting steps for issues where the motor or pump does not rotate.

Rotation Speed (RPM) Issues

Troubleshooting steps related to incorrect rotation speed affecting pump performance.

High Torque on Electric Motor

Troubleshooting steps for issues causing high torque on the electric motor.

Axial Load and Pump Damage

Troubleshooting steps for axial load issues and internal pump damage.

Troubleshooting High Torque on Electric Motor

High Outlet Pressure and Pressure Start Issues

Troubleshooting steps for high outlet pressure and pump start issues.

Troubleshooting Pump Noise

Water Pump Damage and Air in Fluid Noise

Troubleshooting steps for noise caused by pump damage or air in the fluid.

Bleeding, Inlet Pressure, and Reversing Noise

Troubleshooting steps for noise related to bleeding, inlet pressure, and pump reversing.

High RPM, Outlet Pressure, and Soft Start Noise

Troubleshooting steps for noise related to high RPM, outlet pressure, and soft start/stop.

Troubleshooting Installation Noise

Typical Signs of Wear

Valve Plate Wear Identification

Visual guide to identifying wear on the valve plate.

Design Considerations for Water Hydraulic Systems

Installation Procedures for Water Hydraulic Systems

System Start-up Procedures

Troubleshooting Closed Water Systems

System Not Working Diagnosis

General troubleshooting steps for when the closed system is not functioning.

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