Unusual readings can be the sign of a faulty sensor. Inspect all circulation fans and keep well lubricated. If erratic temperatures exist, a record of the oscillations will aide the refrigeration or electronics repair man. Sealed refrigeration units need minimal maintenance, other than keeping the coils free of dust and dirt. Water cooled units must have water pumps and other associated items inspected routinely.
Steam systems have problems with solenoid valves sticking in either the on or off position.
Water spray systems can develop worn or clogged nozzles. Most ballasts, lamps, transformers, and relays can be found at a local electrical store. If the chamber is not going to be used for more than 2 weeks, the unit should be shut off. The manufacturer can provide a shutdown procedure to minimize the problems, such as gasket drying, fluid and gasses losses, and water condensation. Return to Top of Page Lighting systems Radiation in growth chambers, as in the field, is the sole source of energy for plant growth and development.