Mercer Controls, Inc.

 


... for control panels that work and keep on working!

 

DID YOU KNOW?

MERCER CONTROLS is now in the Chlorination Business! For more information, please check out our Bulletins. Thanks!

Galveston, Texas

Ike Hurricane 2008

 

 

 

 

 

 

 

 

 
Services

Expert diagnosis and repair of control panels and associated equipment, including flow meters, recorders, automatic dialers, ultrasonic sensors, fluid level transducers and generators.

Programming

Our staff is very familiar with a variety of Programmable Logic Controllers, Variable Frequency Drive Units, Flow Meters, and Level Controllers. We can assist you in establishing operating conditions to meet your requirements.
 

SCADA

A Supervisory Control And Data Acquisition system can benefit customers by allowing them to remotely receive status and alarm notifications from water plants, sewer plants, and lift stations using the latest Telemetry technology. Plant sites may be miles away from the office. Systems are available which use no telephone line or hardwired connections. Let us talk to you more about this advanced option!

Water Tank Substitution

In areas covered by only one Water Tank we are able to supply water to your customers without anyone being aware that the method of regular delivery had changed.

With the use of a Variable Frequency Drive sized to match the horsepower of your pumps, we can take your tank off-line and still provide your customers with the same water pressure to which they are accustomed.

Please see our:

VFD Rental Rate Schedule

Flow Meter Calibration

Due to the requirements of the Texas Natural Resource Conservation Commission (TNRCC) most flow meters at Wastewater Treatment Plants must be calibrated and certified yearly. We have technicians on staff who are qualified to perform this task.

Our calibration rates are reasonable. We charge $275.00 to $350.00 for checking and certifying the calibration of a flow meter. A nominal mileage charge may apply. Additional flow meters checked and certified on the same trip are discounted $50.00 each. Please call for details.

If adjustments are necessary there will be extra charges.

 

Variable Frequency Drives (VFD)

&

Precision VFD Controllers

A VFD can control the amount of power that a blower or rotor motor uses to supply Dissolved Oxygen to aerate waste water. A PLC interprets received data and then varies the RPM of the motor/s used in order to maintain the desired D.O. reading. The immediate cost savings in energy will be considerable. An added benefit is extension of the life of the motors.

Temporary use of a VFD during a water tank inspection can save having to run a booster pump at full capacity and save a huge electricity waste due to water pressure issuers. To eliminate this waste, a VFD is connected to your existing pump to control the water line pressure by varying the RPM of the pump as needed to maintain a stable pressure.

Tailored Preventive Maintenance Inspection Program

We now offer our customers the benefit of a preventive maintenance program. The best way to eliminate costly repairs is to prevent the equipment from failing in the first place. Budgeting for repair and maintenance is very difficult. You are trying to predict what will break down and when. We will review the condition of your equipment and give you a detailed report of our findings, with our recommendations. Everyone involved in planning for the year can have a better understanding of what repairs need to be budgeted. There is no maintenance program that will insure your machinery will not fail without warning, but the procedures we have created combine our expertise and the use of instrumentation to help identify failures that need immediate repair, as well as accurately flag potential problems.

Typical PM Inspection Process:

1. Motors

  1. Check resistance of winding insulation

  2. Check measurement of voltage and current on each inspection

  3. Perform visual inspection

2. Motor Starters

  1. Check voltage drop across each leg of the starter

  2. Check termination of conductors for proper torque

3. Circuit Breakers

  1. Check voltage drop across each leg of the breaker

  2. Check termination of conductors for proper torque

4. Pumps and Gear Boxes

  1. Check lubrication levels and take samples, if desired

  2. Perform a limited thermal scan*

  3. Perform an audio/visual inspection**

* Thermal Scan: A scan of all components in the control systems for any abnormal temperature readings. For pumps and motors this will help to identify problems with moving parts.

** Audio/Visual Inspection: Inspection of all system components to find worn parts and loose connections. We also include in this inspection listening for faults which show themselves through vibration.

Why Preventive Maintenance?

The customers served by a public utility have little patience and less understanding when the water tap is dry or the sewer does not flow, but major breakdowns can be prevented.

Call us today, we can help!