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Problem Possible Causes Checks/Solutions
Uneven Spray
or
Dry Sections on Pre-Cooler Pads
Water Distribution
System Clogged
TSDC: Clean the spray branches by opening both ends of the distribution header.
TSDC2 or TSDF2: Clean the water distribution gutters.
See page 37 for more details on Water Distribution System Maintenance.”
If the water spray system does not work, connect a garden hose to the discrete spray system.
For the TSDC, close the pump isolation valve. See “Discrete Spray Connection” on page 31
for more details.
Low Performance
Lack of Maintenance
Inspect the Pre-Cooler Pads monthly and replace as needed. The coils should be inspected
quarterly and cleaned as needed.
See page 30 for more details on “Self-Clean Cycle.”
Pre-Cooler Mode Not
Working
Check to ensure setpoint is at the desired point. See page 33 for more details.
Scale Formation on Pre-Cooler
Pads
Hard Water
Decrease the duration of the daily drain time. See page 41 for more details.
Consider installing a water softener at the facility.
If your unit has a bleed valve, partially open it. This is a substitute for increasing the
duration of the daily drain time, mentioned above.
Faulty Drain Valve
Ensure the drain valve opens and closes 100%. Otherwise, contact your local BAC
Representative for a replacement.
Excessive Wear on Pre-Cooler
Pads
After Few Years, Pads
Need to be Replaced
Pre-Cooler Pads should be replaced. Contact your local BAC Representative for replacement
or they can be ordered at www.CoolingTowerWorld.com.
Unit Remains in Auto-Discrete Mode
Pump Failure, Make
up Valve Failure, or No
Water
See EcoFlex™ Controls Alarm Descriptions below..
Conductivity Sensor
Failure
Clean the sensor and check wiring.
Make sure there is no air trapped at the sensor.
Contact your local BAC representative for a replacement sensor
Replacement Parts
To order replacement parts, contact us at info@baltimoreaircoil.com or visit
www.CoolingTowerWorld.com to place your order today.
Problem Possible Causes Checks/Solutions
Make-up Valve Failure or No Water
Faulty Make-up Valve Contact your local BAC representative for a replacement valve.
No Water in the System Ensure that water is available at the minimum required flow and pressure at all times.
Incoming Water
Pressure is Below
BACs Recommended
Value (25 psi)
Ensure the water main is not shut down during winter for areas where the temperature drops
below freezing.
This alarm could be present if an unusually warm day occurs during the winter. To eliminate
this alarm, it is recommended to raise the setpoint of the unit 5-10°F during the winter and
return the setpoint back to normal when the main water lines are reopen for the spring.
Fan Failure – Same as “Fan Does Not Run” on page 44.
Pump Failure Pump is Not Working
Check that all breakers are in the ON position. When the pump is commanded “ON”, verify
120VAC is measured between terminals 2 and 3.
Verify that the pump starter relay C1 is operating correctly.
Verify that the isolation valve located by the pump is fully open.
If problem persists, contact your local BAC representative for a replacement pump kit.
EcoFlex™ Controls Alarm Descriptions
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