SYMPTOMS After performing a chiller microprocessor controller replacement on a dual state “D Series” chiller the second stage programming functions are not showing up in the programming mode. CAUSE By default, legacy replacement microprocessors are shipped configured for single “S Series” stage operation. RESOLUTION When field installing a replacement microprocessor controller on a dual stage […]
Supplemental Service Bulletin – Technical Bulletin – GLF-GLI-OEM #1
SYMPTOMS This Supplemental Service Bulletin has been published to address startup and commissioning tasks specific to Greenline Fabrications (GLF) and Greenline Industries (GLI) custom OEM systems. The following items are designed to supplement generic startup tasks listed in the Legacy Installation Operations Manuel (IOM) shipped with each chiller. RELATED DOCUMENTS Technical Bulletin – GLF-GLI-OEM #1 […]
Electrical Definitions, Terms, and Formulas
SUMMARY This article contains information on electrical definitions, terms, and formulas. Formulas for voltage, amperage, ohms, and many more. SYMPTOMS • Volts – The units of electrical potential or motive force. The force is required to send one ampere of current through one ohm of resistance. • Ohms – The units of resistance. One ohm […]
Copper Piping Water Velocity Limits
SUMMARY This article gives information about copper piping’s water velocity limits. In order to provide erosion, corrosion, and excecssive noise generation, water velocity must be controlled. SYMPTOMS The water velocity in copper pipes should be kept within certain limits to avoid erosion, corrosion and excessive noise generation. RELATED DOCUMENTS Copper Pipe – Water Velocity Limits […]
Copper Pipes – Insulation and Heat Loss
SUMMARY This article shows the heat loss from an insulated copper pipe or tube to the surrounding air. Details can be found in the included table. SYMPTOMS The heat loss from an insulated copper pipe or tube to the surrounding air can be found in the table below. RELATED DOCUMENTS Copper Pipes – Insulation and […]
Centrifugal Pumps – Adapt Pump Capacities to Process Demand
SUMMARY This article is dedicated to explaining centrifugal pumps and the often necessary need to adapt pump capacities to process demand.” SYMPTOMS Discharge Regulation of Centrifugal Pumps Adapting pump capacities to process demand It is often necessary to adapt the pump capacity to a temporary or permanent change in the process demand. RELATED DOCUMENTS Discharge […]
Acceptable Equivalent Sound Levels
SUMMARY This article provides a table with the acceptable equivalent sound levels, measured in decibels, for different locations. SYMPTOMS Acceptable Equivalent Sound Level – Leq – for different location can be taken from the table below: RELATED DOCUMENTS Decibel DBA Levels