When choosing a replacement motor, you can often use the motor's nameplate to help you in making the selection, but a nameplate doesn't always provide you with everything you need to know.
In this edition of the Btu Buddy
series, Part 2 of the previous article, Bob returns to the motel that had a
heating problem to determine how air got into the closed loop
piping system.
In troubleshooting situations involving a motor,
more than half the battle is simply isolating the problem. So when problems arise, how can you tell if it
is the drive, the motor, or the load? Here are a few tips.
In this installment of the Btu Buddy series, the dispatcher sends Bob to a motel that is five stories high with the complaint that the top floor does not have any heat. Bob discovers air in the hot water heating system.
Here are some tips for your next commercial refrigerator troubleshooting call. This article provides tips for various conditions, including handling a unit that’s dead, that’s freezing up, or that might have a compressor problem.
The only fluids circulating within a refrigeration system should be refrigerant and oil. Any other fluids contained within the system may reduce its capacity and possibly cause harm to the system. One common contaminant that can enter a system is atmospheric air.
In this edition of the Btu Buddy series, Bob goes on a call where a heat pump indoor fan motor is coming on from time to time even when the thermostat is off. He finds that a grounded heat coil is causing the intermittent fan operation.
Proper HVAC filtration is at the heart of indoor air quality. Filters will only do their job and perform as specified, however, when they are maintained correctly.
In this installment of the Btu Buddy series, Bob finds that a small retail store using a heat pump has had the outside unit stolen, most likely for the copper. He then moves on replacing the unit and preventing this from happening again.
This article, written by an industry veteran, provides some general HVAC service techniques picked up over the years. It's designed to help technicians who are just starting out in the trade.