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We applaud any leader's commitment to an improved work environment for their employees, and recognize the huge investment that this commitment can take. Since the heating, cooling and air quality of a building can play such a major factor in a happy and productive environment, we wanted to provide you with some simple mid-year maintenance tips to make sure your commercial and industrial HVAC systems are in check.  Below you can find some recommendations from Ryan King and Mike Bess, members of the Cambridge customer service team.

  1. Check the air filters.  Clean these filters if necessary because dirty filters will reduce CFM and could damage the discharge air sensor. 
  2. Grease the bearings.  The grease should be evenly distributed around the race; however, do not use the standard bearing grease in the Baldor motor.  This motor takes special grease that can be referred to in the technical manual.
  3. Check the belt tension and inspect for wear.  If the belt is too tight, it can  prematurely wear out the bearings and the belt.  If the belt is too loose it can slip or squeal.  
  4. Cycle the unit on and off in all modes of operation.  This ensures things are working per specifications.
  5. Check the discharge temperature.  Use a wired thermistor at the mixing box and calibrate the system if necessary.
  6. Inspect the control panels.  Look for any loose or frayed wire connections and make sure all connections are tight.  
  7. Check and clean the evaporator and condenser coils.  Dirty coils will drastically reduce cooling equipment efficiency and strain the compressor. 
  8. Perform a gas valve leak test.  This verifies the integrity of the valves.
  9. Verify that the manifold differential gas pressure matches the nameplate.  It is extremely important that this is set up properly.  If the manifold pressure is incorrect, the heater temp rises and its efficiency will be affected.  
  10. Inspect direct evaporative media (CELdek).  Ensure that there is proper water flow across the media. 
  11. Check the calibration of digital thermostats.  Press the up arrow and hold it; the display should show 0F.  If not, the calibration may have been adjusted to show a warmer or cooler temperature than desired.

We know you’re busy, and sometimes the easiest way to get direction on a service question or instructions on how to install can best be obtained by a quick “How-To” video. For that reason, we’ve compiled some service videos that you can view at your convenience that may help you with a Start Up or troubleshoot a problem you may be experiencing.

As always, our service team is happy to assist you with any questions you may have. Please call us at (888) 976-4451or email: service_dept@cambridge-eng.com