Haskris WW Series - User Manual

Copyright © 2020 Haskris REV102920
1
www.haskris.com
776 North Oaklawn Avenue, Elmhurst, Illinois 60126 USA ph: +1-847-956-6420 | fx: +1-847-956-6595 | email: service@haskris.com
Operation and Maintenance
Haskris LX-Series, R-Series, WW-Series, OPC-Series
Section 1: Temperature Control
• Your Haskris will have one of three different types of controller. Use table 1-1 to identify the relevant controller.
• The controller may appear different than examples. Contact Haskris if you are not sure what type you have.
• Adjust supply temperature while under heat load.
• Allow 15-30 minutes for the supply temperature to stabilize after an adjustment.
• Consult a dew point chart to select a supply uid temperature that will minimize condensation.
• If no heat load is applied, the unit may “over-cool”.
Electronic Temperature Controllers
ON/OFF
Cycling Control
Section 1.1
Parametric
Control
Section 1.2
Programmable
Logic Control
Section 1.3
Table 1-1

Haskris WW Series Specifications

General

Temperature Stability	±0.1°C
Reservoir Size	Varies by model
Controller	Microprocessor-based controller
Compressor Type	Hermetic compressor
Sound Level	Varies by model
Water Flow Rate	Varies by model
Water Pressure Drop	Varies by model
Dimensions (Varies by Model)	Varies by model
Weight (Varies by Model)	Varies by model
Pump Type	Centrifugal pump
Operating Voltage	208-230/460V, 3 phase, 60 Hz
Leaving Water Temperature Range	35°F to 70°F (2°C to 21°C)

Summary

Temperature Control

ON;OFF Cycling Control

Details ON/OFF controllers for temperature regulation.

Parametric Control

Explains parametric control for temperature regulation.

Programmable Logic Control

Covers programmable logic controllers for temperature management.

ON;OFF Cycling Control Operation

Set Point Adjustment

Procedure for adjusting the temperature set point on controllers.

Parametric Control Operation

Set Point Adjustment

Procedure for adjusting the set point value for parametric controllers.

High;Low Temperature Alarm Adjustment

How to adjust temperature alarm set points.

PLC Control Operation

Set Point Adjustment

Steps to adjust the set point value for PLC controllers.

Alarm Condition Handling

How to view and scroll through current and past alarms.

Indicator Lights

Power and Status Indicators

Describes ON/OFF and power status lights.

Liquid Level Indicators

Explains indicators for liquid tank levels (FULL, Low).

Fault Indicators

Covers liquid temp fault, high/low refrigerant pressure, and water fault indicators.

Strainers and Filters

Suction Strainers

Details nylon suction strainers, maintenance, and replacement.

Wye Strainers

Describes wye strainers in piping with removable screens.

Supply Line Particle Filters

Explains particle filters, pressure monitoring, and replacement.

Water Quality and Treatment

Maintaining Water Quality

Guidance on inspecting and regularly draining/replacing water.

Flushing the System

Procedure for flushing the system with hydrogen peroxide.

Additives for Water

Recommendations for using sodium bicarbonate and propylene glycol.

Outdoor Unit Water Quality

Additives for Freezing Resistance

Use of glycol mixtures for outdoor operation to resist freezing.

Maintaining Glycol Solution Quality

Checking and changing glycol solution based on pH and percentage.

Wye Strainer Maintenance

Cleaning wye strainers during glycol changes or pressure increases.

Bypass Pressure Relief Valve

Valve Setting Procedure

Steps to adjust the bypass pressure relief valve setting.

Refrigerant Sight Glass

Moisture Indicator Function

Interpreting sight glass for refrigerant level and contamination.

Cleaning and Maintenance

Cleaning Air-Cooled Condenser

Procedure for removing dust and debris from condensers.

Maintenance Checks Schedule

Guidelines for performing system checks after installation and over time.

Support and Contact

Technical Support Information

Contact details for questions, problems, and technical support.

Product Serial Number

Location of the product serial number for support calls.