To accurately troubleshoot issues in the field, Danfoss created a one-source solution: The HVACR Service Tool allows for fast and easy problem-solving using keyword search, helping technicians as they diagnose and resolve issues.
Bob and Tim arrive at the jobsite of a new customer. The customer is the owner of a shopping center that has a branch post office as one of its tenants. The complaint has been that the system is not controlling the indoor temperature in the postal facility. Tim tells Bob as they are arriving that the service ticket says that they are to service a 20 ton split system that uses a hot water coil for heating and an air conditioning coil and condensing unit for cooling. They are to do routine maintenance on the entire system.
Thermostatic expansion valves (TXVs) come in many different shapes and sizes. Although they all are designed to control the superheat value of the refrigerant leaving an evaporator, there are some differences among TXVs that either enhance their operation or slightly change how they operate.
The capacity of a compressor can be affected by a refrigeration system’s ever-changing pressures. In addition, suction pressure entering the compressor will change the density of the suction gasses within the compressor and affect its capacity.
The devil is in the details, and the wrong choice can cause issues now or in the future
May 1, 2017
When replacing a component, it is generally best practice to obtain its replacement by referencing its part number and installing a component with the same part number. Unfortunately, this is not always possible or practical. Due to the nature of the systems we service, many times we are forced to select a replacement component based on either a cross-reference or by matching its specifications to those of the original component.
The case can be made that recovery and reclamation begins with keeping refrigerants in the system where they belong; refrigerant that leaks out into the atmosphere is never going to be recovered or reclaimed.
On Demand You want to stay profitable in-between seasons, grow your business, and provide your customers with better service. You’re considering adding a new service line, but aren’t sure the best way to do it. Not all service lines are created equal and you must choose wisely or risk creating problems instead of reaching your goals.