EcoWater CHC Series, Service And Troubleshooting Manual

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3. Look at the power disconnect and the motor contactor, if any smoke residue is left on the
plastic, this can signal that one of the contacts may be failing. EcoWater CHC recommends
the replacement of the component to ensure appropriate power distribution. If one of the
contacts have failed, the pump will make a humming noise and will not spin.
4. If the Main breaker is weak or too small in rating, the pump can cause the breaker to trip
during start ups. This is most noticeable upon repeated starting/stopping of the pump motor.
The normal rating of the supply breaker should be at least twice the pump’s rated FLA. It is
also recommended that the supply breaker be of a time delay type allowing for at least 2
seconds of sudden amperage spikes.
5. If it is the thermal overload that is tripping frequently also verify that the selected trip point
is at least 1.15 x the rated FLA of the motor. If it is set correctly and the thermal overload
continues to trip, replace the thermal overload.
5.1.5 Indicator lights are non functional (pump is operational but the indicator is not lit)
1. Verify that the control voltage is present on the back of the indicator. If it is, then replace
the indicator with an appropriate matched bulb or LED. Be aware that some of the older
CHC (Older cabinet style units) utilize a 24V AC bulb, it must be replaced with a like
product.
2. Always make sure that the plastic cap covering the bulb is not cracked, broken, or its seal is
defective, if water or rain gets onto a bulb, it will cause the bulb to fail, so replace any
defective parts found.
3. If there is no control voltage at the back of the indicator, then there may be a faulty wire or
connection, contact EcoWater CHC Service to receive the appropriate electrical wiring
schematic to verify the wires and connections.
5.1.6 The conductivity meter will not power on (Walchem or LMI only)
1. Verify that power is available into the conductivity meter on the power cable. Both meters
require 120V AC power. If no power is available verify the power cable and its connection
to the power source.
2. Check the fuses inside of the Walchem or LMI units.
a. The F1 fuse on the LMI is under the black plate below the control panel. It is rated
at 4A, 250V slow blow and should only be replaced with a similar product
b. The F1 fuse on the Walchem is behind the control panel, you will need to remove
the two Phillips screws to access the fuse. It is rated at .125 A, 250V and should
only be replaced with a similar product.
c. If they continuously blow the meter is defective and must be replaced.