EcoWater CHC Series, Service And Troubleshooting Manual

Page: 44 / 130

44
5.0 TROUBLESHOOTING
This section has been divided into sections that reflect the problems that may be encountered.
The possible causes discussed may not specify all possible failures (Contact EcoWater CHC
Service personnel to discuss your problem for other possible failures to look for). At the end of
this section, specific failure alarms are discussed.
The troubleshooting techniques discussed here are placed in a functional order, the actual order
used for your troubleshooting may differ.
After each set of troubleshooting instructions you will find a blank area for you use in adding
notes and other hints.
5.1Power Issues-
5.1.1 The skid will not power ON (No power LED and No pump operation)-
1. Verify if the power indicator is lit on the motor starter, IF IT IS LIT, skip to #4.
2. Verify that power is available at the motor starter. Open the motor starter and with the
DVM (Digital Volt Meter), verify that power is present on all three legs of the power
supply. EcoWater CHC recommends the use of the ONE HAND safety technique. This
means only one hand should enter the motor starter box at any one time, the other hand
should be placed behind your back during testing. You can connect the black lead to any
ground location within the motor starter or you can hold both probes with one hand as
discussed during training.
3. If power is not at the skid, have the facility maintenance staff verify that the power
disconnect breaker is still in the ON position, have the customer verify why power is not
available at the CHC equipment.
4. If power is available at the skid, verify that as the power disconnect on the motor starter is
turned ON, that power is available at the outlet terminals of the power disconnect. If there
is no power at the outlet terminals (must be on all three), replace the power disconnect.
5. If power is available at the outlet terminals of the power disconnect, then verify that power
is available through the main fuses. If power is not available through the fuses, replace the
fuses and verify operation of the system. Normally if these main fuses have been blown, a
secondary system failure may have occurred, and other trouble shooting may be required.
Another possible cause for a main fuse failure could also include weather conditions. If
lightning in the area occurred at the original time of failure, it is possible that the lightning
had struck the electrical supply and caused a sudden surge of power into the skid causing
the fuses to fail. Verify all other components for appropriate operation, and replace those
items if they have also failed.
6. If the power is available through the fuses then verify that you have 120V at the secondary
side of the control transformer. If you do, proceed to “Power at skid, however the pump
will not start”. If you do not verify that you have 480 V on the Primary side of the
transformer. If there is 480 volts on the transformer’s primary and 0 volts on the secondary,
than the transformer has failed and must be replaced.
7. If there was no voltage on the primary of the transformer, then check the smaller control
voltage fuses. The control voltage fuses are rated for 4/10 A at 600 Volts. You will need to
replace them with an appropriate rated replacement part. You do not want to exceed the
4/10 size, too large of a fuse could cause a fire due to transformer overload. Once the fuses
are replaced verify that the system operates without continuously blowing fuses. If the