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

 

Temperatures are on the rise, and it's time to review safety protocols when it comes to overheating. Thanks to our Safety Coordinator, Conner LaLonde, for sharing these watch signs from the National Safety Council with our team this week!

HEAT RASH 

Look for: red inflammation of the skin. 

What to do: Remove unnecessary clothing. Do not apply creams or lotions as these could trap heat.

HEAT CRAMPS

Look for: painful muscle cramping or spasms. 

What to do: Remove worker from heat, provide water to sip, gently stretch muscle.

HEAT EXHAUSTION 

Look for: weakness, dizziness, nausea, headache, heavy sweating, clammy skin. 

What to do: Remove worker from heat, give up to one liter of water (unless they are vomiting). Cool worker with cold, wet cloths and fan.

HEAT STROKE 

Look for: Rapid pulse, no sweating, confusion or unconsciousness. 

What to do: Call for medical help immediately. Do not administer any liquids if unconscious.

“Comfort” is an interesting word that we use a lot at Cambridge.  Since we are an HVAC company, it is usually in context with making sure the people in your industrial facility are breathing fresh, tempered air, or making sure that your employees in high-bay buildings aren’t freezing in the dead of winter. There’s also “comfort” in the realm of making sure your employees know that you’ve got their backs and have a genuine interest in their personal health and professional growth.  (see blogs on Dale Carnegie Leadership Training and Stretching Your Way to Workplace Safety to generate ideas of how to boost comfort both personally and professionally).
 

Still, most companies overlook the importance of physical employee comfort, and are losing real talent and real opportunity to grow with those employees when they leave to pursue a workplace that can meet and exceed their basic requirements of a healthy working environment.
 

Not convinced? Here are four reasons that we think will back us up.
 

Safety protocol alone is reason enough.

According to OSHA – your workers have the right to working conditions that do not pose a risk of serious harm.  The OSHA website starts with a dire warning: “The quality of indoor air inside … workplaces is important not only for workers' comfort but also for their health. Poor indoor air quality (IAQ) has been tied to symptoms like headaches, fatigue, trouble concentrating, and irritation of the eyes, nose, throat and lungs.” This safety protocol is actually far, far above a “comfort” suggestion – and could be downright dangerous if ignored.
 

And even though we could stop after the safety reason, here are three more reasons to consider:
 

You can’t exist without them.

Unless you are a completely automated company or self-employed, you depend on at least one employee to get your product or service sold, produced, billed, you name it. Employees know that they have employment options – especially in trade professions, where there is a serious labor shortage. Don’t doubt that even if an employee feels fairly compensated, they might still leave because of continuing discomfort in their workspace.
 


 

Continuous improvement falls apart when it’s not the priority.

Imagine a humid July day in a distribution facility, when you can’t imagine doing anything but cooling off. We spend a portion of every day identifying opportunities for lean improvement in our processes and workspaces, but even we know that these can fall by the wayside when it is just too hot or too cold.
 

They are your brand ambassadors.

Client services to your customer.

Seasoned laborers to new hires.

Any employee to the world on social media.

Your employees can and should be your biggest advocates, because they are treated right (and physical comfort plays a big role) and believe in your product or service. The opposite of these two things can destroy every sales opportunity on your books this year.

There are so many ways to make your team feel comfortable – and they deserve it, so make it a priority to figure out the right investment to provide them a workspace in which they can reach their full potential.

This blog was guest-written by Conner LaLonde, M-Series Electrician. It is adapted from his intro given as the Morning Meeting Emcee.

Imagine you are running the length of a football field while a game of professional football players are playing. That’s a pretty intense and frightening scenario, right? Players who are two or three times your size, running and charging as fast and as hard as they can, all around you. They nearly collide into you and you can hardly dodge in time. You do your best to stay out of the way in order to make it to your destination. Now imagine doing the same thing, but this time you are blindfolded. Insane, right? We know that would be dangerous and crazy to attempt, in fear of almost certain serious bodily injury. So why are people still driving their cars while blinded by distractions like eating, doing make-up, or most commonly, their phones?

The results of a survey from The American Automobile Association (AAA) says that 84% of drivers recognize that distracted driving is dangerous, however, 36% of those people surveyed admit to using their phones while driving within the month prior to the survey.

A studies have shown that drivers distracted by a phone are as cognitively impaired as a driver with a blood alcohol content (BAC) of 0.08%. In other words, driving while your mind is on your device and not on the task of driving is similar to driving while intoxicated.

Composing, reading, or sending a text message or email takes your mind and eyes off the road for about five seconds. While traveling 55 miles per hour, a vehicle and its occupants cover an entire football field in about five seconds. You wouldn’t run through that football game blind, so why would you drive on the streets with your head and hands focused on anything else?

Be safe and don’t drive distracted.

Have you ever received a request to include an HVAC smoke detector with Cambridge heaters? Typically, engineers or building inspectors will make this request, interpreting building codes to require an HVAC smoke detector be installed on any air handling system with a capacity greater than 2,000 cubic feet per minute (CFM).

Why Cambridge Systems Do Not Require an HVAC Smoke Detector

The requirements for needing an HVAC smoke detector are clearly addressed in Section 606 of the International Mechanical Code (IMC), This section covers the requirements for utilizing an HVAC smoke detector for air handling equipment, and states: 606.1 Controls required. Air distribution systems shall be equipped with smoke detectors listed and labeled for installation in air distribution systems 606.2 Where required. Smoke detectors shall be installed where indicated in Sections 606.2.1 through 606.2.3. Exception: Smoke detectors shall not be required where air distribution systems are incapable of spreading smoke beyond the enclosing walls, floors and ceilings of the room or space in which the smoke is generated. Cambridge units fall under this exception, as our systems use only 100% outdoor air to heat and ventilate, making them incapable of spreading smoke beyond these parameters. The IMC Commentary provides further explanation on the intent of the code: It is not the intent of Section 606 to require duct smoke detectors in systems that function only as exhaust systems or only as makeup air systems. A makeup air supply system that discharges 100-percent outdoor air into a building does not withdraw air from the building and, therefore, cannot contribute to the movement of smoke. It is more important to keep in mind the intended application of Section 606, which is to address the potential hazard caused by ducted air distribution systems that link together rooms and spaces within a building, thereby providing the means to distribute smoke to such rooms and spaces. Air-handling systems of any type that cannot transport smoke beyond the area of fire origin are exempt from the provisions of this section.

Since Cambridge heaters are only used as 100% outdoor air systems smoke detectors are not required.

Question: Have you ever been required to include a smoke detector on a Cambridge unit?