Chiller Performance: Testing, Inspection and Maintenance

In depth chiller upkeep can extend the everyday living of apparatus, improve its trustworthiness, preserve scarce refrigerant, and lower Electricity together with other functioning expenses though buying you time to work out a long-array program.

Tests and inspection

You’ll need design specs, devices manuals and maintenance background for each element, and a price historical past for obtain, repairs and operation. Are some components having much more repairs and costing more than Many others? Are yearly Power infra red pyrometer charges raising quicker than price will increase? Have the latest costs exceeded past fees? Are your expenditures bigger than charges at other similar facilities? Are they larger than averages from your Specialist association? You will need To achieve this screening every year or two, so set up a recordkeeping procedure if you do not have one particular. Choose if you want to examination in-dwelling or use an inspection company Together with the instrumentation and Expert know-how.

If you select on a professional, your upkeep team will have to activate and established the system for the inspector, change travel ratios, increase dampers if desired, swap worn sections, and clearly show the inspector where by panels and machines are located. Notify your gear seller and consulting engineer in regards to the inspection to allow them to supply layout specifics of the initial procedure.

You’ll need to carry out air harmony, water stability and sound tests. The factors analyzed are:

• air-shifting products

• provide and exhaust enthusiasts

• diffusers and grilles

• h2o-stability features

• circulating water pumps

• cooling towers

• chillers

• air- and drinking water-cooled condensers

• ducting.

A stability exam on a packaged unit takes about a working day; on crafted-up units, at the very least two or 3 days or more for multi-zone or multi-unit units. All testing instruments need to be calibrated inside 6 months of testing.

Air-equilibrium testing

You will need to try and do air-stability screening 1st mainly because process air need to be in stability for drinking water-balance screening to commence effectively. Distinctive resources and instrumentation employed are:



• very hot wire anemometer

• rotating vane anemometer

• self-timing velocity counter

• pitot tubes 18-60 inches

• velocity meters

• clamp-on ammeter

• static strategies

• several eight-inch stem thermometers

• motorized psychrometer

• hand sling psychrometer

• micromanometer

• inclined gages 3-inch and ten-inch

• multi-place area pyrometer

• combustion check sets

• electrical drill motors

• balancing hoods

• pyrometer

• recording thermometers

• smoke gun

• and two-way radios.