In this month’s troubleshooting problem, you’re responding to a complaint that the temperature in a house is too warm. When you call ahead to let the customer know you’re on the way, they provide the additional information that “something is running,” but the temperature just continues to rise.
Bob and Tim are driving to a new customer site where there is a complaint of the building not maintaining the correct temperature. The system is a 50-ton air cooled chiller mounted on the roof. The weather is very hot, 97°F, and the indoor conditions are 78°F. The thermostat is set for 75°, and it is late afternoon.
This month’s troubleshooting situation involves an air-to-air, package unit heat pump that is approximately 8-years old, and the customer’s complaint is that, rather than providing cooling, it’s just blowing warm air.
Bob and Tim are going out to a new job. It’s an air cooled chiller on the rooftop of an office building. This is the first air cooled chiller that Tim has ever seen so Bob is going to have to describe the operation of the chiller to Tim.
The equipment in this month’s article is a two-stage air conditioning system. The operating conditions are high ambient, and the customer’s complaint is that there is no cooling.
Bob and Tim are at lunch and discussing the last service call that they had which was a spring start up on a 100 ton chiller. Tim has some questions about how a chiller operates and Bob is filling him in on some blank places that he has in his knowledge base.
In this troubleshooting situation, the equipment is a walk-in refrigeration system in a busy restaurant that has experienced a compressor failure…specifically a mechanical failure.
Bob and Tim are on their way to a spring start up for a chiller in an office building. It is a 100-ton water cooled reciprocating chiller with the chiller in the basement and the cooling tower on the roof.
In this troubleshooting situation you’re called out to a tavern to check on a beverage storage unit that, according to the complaint, is “not keeping things cool”.
Bob and Tim are discussing the job that they are about to start. They are at a residence and the system has a blown low-voltage fuse. Tim said, “Let’s just change the fuse and try it and see if the system will start up. The only thing it can do is blow another fuse."
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