As energy costs continue to increase, companies are reassessing their energy management capabilities and looking for ways to trim their operating expenses. As a result, sophisticated energy management systems (EMS) have become an attractive tool for companies wanting to reduce their energy consumption and maintenance costs and contractors who are looking to grow their businesses.
Contractors are always looking for different ways to grow their businesses. How about offering a completely new product or service — one that is intertwined with the products and services a contractor already offers, but that many customers would find extremely beneficial if implemented correctly? That new product and service can be found in building automation systems (BAS).
In this second installment of a four-part series on The News’ 2002 survey of contractor readers concerning their companies’ salary and service rates, we examine contractors’ pricing methods and service rates.
Some 40 years ago, the business of self-storage was small business, without much of a future. Today, the clientele for storage space has grown to include wine aficionados, antique collectors, and commercial business owners with diverse storage needs. As storage facility owners cater to new and growing markets, they are adding computer-based control technologies to their ensemble of services and benefits.
There has been a lot going on in the world of building automation systems (BAS) in the last decade. Prior to that time, proprietary BAS were the norm. In these types of systems, the manufacturer controlled every internal aspect of the system, the components could only be purchased from the original manufacturer, and the system could not easily be linked to any other manufacturer’s system. Today, most manufacturers are emphasizing the need for “open” systems that use communication protocols such as BACnet®, LonWorks®, and ModBus.
In this first installment of a four-part series on The News’ 2002 survey of contractor readers concerning their companies’ salary and service rates, we examine salary rates, benefits, and the hiring and firing of employees.
The growth of the frozen food industry has meant an increase in the number of production and storage facilities to meet consumer needs. Temperatures in frozen food production and distribution range from 50 to -50 degrees F. A test facility with a layout that represents all levels of temperatures and numerous production challenges was chosen to illustrate the refrigeration requirements in a typical production-distribution facility.
When you are replacing the various types of fan motors typically found on refrigeration systems, it is not uncommon to be unable to identify or obtain the original motor from the OEM’s part number. You may need to select a replacement motor that matches the original motor’s specifications. When you are choosing a replacement motor, it almost goes without saying that the specifications of the replacement must closely match those of the original.
Many service technicians often become confused when the liquid line becomes restricted in the refrigeration system. This is because the symptoms often look like an undercharge of refrigerant. This article covers a refrigeration system with a restricted liquid line after the receiver using R-134a as the refrigerant. The refrigeration system is a low temperature freezer with a receiver and a TXV.