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Stulz Explorer WPA User Manual

Stulz Explorer WPA
78 pages
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Index i01
Issue 06.2016
WPA Explorer
Original instructions
Air cooled liquid chillers
400V / ~3 / 50Hz

Table of Contents

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Stulz Explorer WPA Specifications

General IconGeneral
BrandStulz
ModelExplorer WPA
CategoryChiller
LanguageEnglish

Summary

1. Introduction

1.1 Introduction

Provides basic information for installation, operation, and maintenance.

1.2 Warranty

Details the terms and conditions of the product warranty.

1.3 Safety

1.3.1 Symbols used in the manual

Explains safety symbols and their meanings within the manual.

1.3.2 Labels

Identifies various safety labels applied to the unit and their locations.

1.3.3 Safety Instructions

1.3.4 Handling refrigerants

Guidelines and precautions for safe handling of refrigerants.

1.3.5 Safety and environmental requirement

Outlines safety and environmental regulations for refrigerating plants.

2. Residual risk

2.1 Transport and installation

Identifies potential risks during unit transport and installation and preventive measures.

2.2 Start-up

Lists risks associated with the unit's start-up phase and necessary precautions.

2.3 Operation

Details risks during normal operation and recommended safety actions.

2.4 Maintenance

2.5 Dismantling

Describes risks and procedures for safely dismantling the unit.

2.6 Safety Data

Provides safety data sheets for refrigerants and oils used in the unit.

3. Transport/Storage

3.1 Delivery of units

Procedures for receiving and inspecting chiller units upon delivery.

3.2 Storage

Measures for safe intermediate storage of chillers to prevent damage and corrosion.

3.3 Transport

Methods for lifting and moving chillers, including transport protection and center of gravity.

4. Description

4.1 Type Code

Explains how to decode the unit's type code from its nameplate.

4.2 Intended use

Defines the proper application and limitations of the chiller.

4.3 Chiller Design

Details the construction, components, and variations of the chiller.

4.4 Piping diagrams

4.4.1 Legend

Glossary of symbols used in refrigerant piping diagrams.

4.5 Hydraulic diagrams

4.5.1 Legend

Glossary of symbols used in hydraulic diagrams.

4.5.2 Standard & Low Noise version

Hydraulic diagrams for standard and low noise chiller versions.

5. Technical Data

5.1 Application limits

Specifies the operating ranges and limits for the chiller.

5.1.1 Storage conditions

Defines the environmental conditions required for storing the chiller.

5.1.2 Operating conditions

Details the required conditions for optimal chiller operation.

5.2 Chilled water quality

5.2.1 Glycol correction factors

Provides coefficients to adjust technical data when using glycol mixtures.

5.3 Pressure Drops

5.4 Technical Data

5.5 Dimensional drawings

5.6 Electrical connection data

6. Installation

6.1 Positioning

Guidelines for selecting installation sites, including clearances and environmental considerations.

6.2 Weight on the supports

Details the weight distribution on support points for various models.

6.3 Refrigerant circuit

6.4 External water circuit

Describes the components and requirements of the external chilled water circuit.

6.5 Outside temperature sensor

6.6 Chilled water connection

6.7 Filling and bleeding air

Procedures for filling the water circuit and removing trapped air.

6.8 Electrical connection

6.9 Opening the electric cabinet

Instructions for accessing the electrical cabinet using the provided key.

6.10 Position of the electrical connections

Details on routing and connecting electrical cables to the cabinet.

6.11 Pump control

6.11.1 System with external pump

Guidance for integrating external pumps with the chiller's control system.

7. Commisioning

7.1 Preparation

Pre-commissioning checks and required documentation verification.

7.2 First-Startup

Steps for initial start-up, including oil preheating and water circuit commissioning.

7.2.3 Commissioning of the refrigerant circuit

8. Maintenance

8.1 Safety instructions

General safety guidelines and warnings for performing maintenance work.

8.2 Maintenance intervals

Recommended schedule for various maintenance tasks.

8.3 Refrigerant Circuit

8.3.1 Refrigerant charge

Procedures for checking and maintaining the refrigerant charge, including leak detection.

8.3.2 Quantity

Checks for correct refrigerant quantity and potential effects of overfilling.

8.3.3 Tightness of refrigerant circuit

Requirements for checking refrigerant circuit tightness and recording inspection results.

8.3.4 Purity

How to check refrigerant purity and detect humidity using sight glass and filter drier.

8.3.5 Exchange of filter drier

Step-by-step guide for replacing the filter drier in the refrigerant circuit.

8.3.6 HP switch

How to check and reset the high pressure (HP) switch functionality.

8.3.7 LP switch

How to check and test the low pressure (LP) switch functionality.

8.3.8 Expansion valve

Checking the electronic expansion valve and its superheating control.

8.3.9 Compressor

Checks for compressor, crankcase heater, oil level, and potential issues.

8.4 Air circuit

8.4.1 Condenser

Checks and maintenance procedures for the condenser coils.

8.4.2 Condenser Fan

Checks for condenser fan operation and bearing lubrication.

8.4.3 Filter

Instructions for checking and cleaning air filters.

8.5 Water circuit

8.5.1 Tightness

Visual inspection of the water circuit for leaks and tightness.

8.5.2 Evaporator

Checking the evaporator for pollution and heat transmission issues.

8.5.3 Differential pressure switch

How to check the function of the differential pressure switch.

8.6 Electric circuit

8.6.1 Powerboard

Checking the powerboard for proper operation of fans and filters.

8.7 Unit in general

9. Malfunction

10. Dismantling and disposal

11. CE declaration of Conformity

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