Copyright © 2020 White Knight Fluid Handling | A Graco company
P: 626.599.8566 |
|
https://wkfluidhandling.com
Aquarius DIW Heaters Owner’s Manual
Ver. 1.0.0 | 29 Apr 2020 | P. 20
Subject to change without notice
12. Troubleshooting for Aquarius
®
System
Problem
Solution
Aquarius® system will not
power ON
A. Verify factory power is provided to system.
B. If option is selected, verify that the fused disconnect switch is set to the ON position.
i) If disconnect switch is set to OFF, check continuity of the disconnect switch fuses.
C. Verify that the EMO (Emergency Off) Switch is not engaged.
D. Verify that the compact fused disconnect switch is set to the ON position.
i) If disconnect switch is set to OFF and a light is present, check continuity of the
disconnect switch fuses.
E. Check system fuses.
F. Call the factory for assistance.
Nuisance Hi-Limit Alarm
A. Call the factory for assistance.
Controller returns to
“STANDBY” mode from
“ACTIVE” mode after ALARM
RESET key is pressed and
no alarm is indicated.
A. The Auto Reset function is ON (enabled). If undesired, disable the Auto Reset function.
(Note: The Auto Reset function affects only the Low Flow Alarm by disabling it.)
B. Minimum flow set at 0.5 gpm and actual flow is 0.5 gpm or less. Increase the actual
flow to more than 0.5 gpm to switch back to “ACTIVE” mode and to initiate the heaters.
Nuisance Low Level Alarm
(from ACTIVE mode).
A. Hot water or fluid has the potential to trap air bubbles. Increase the pressure of the
water supply, or restrict the output to increase the back pressure.
B. Check the Liquid Level Sensor.
Low Level Alarm (from
STANDBY mode)
A. No process flow. Verify that the process fluid supply valve is open allow the process
fluid flow through the system heaters
High Temperature Alarm
A. The process temperature has exceeded the “High Temperature Alarm Set Point”. If the
“High Temperature Alarm Set Point” is set correctly, then make an adjustment in the
Control Settings screen to the “Power Adjust” parameter. Reset this parameter to –5
counts. See if this solves the issue. If not, continue reducing the count by five until the
issue is resolved.
Low Flow Alarm
A. The flow rate has dropped below the “Low Flow Alarm Set Point” or the minimum
required flow rate of 0.5 gpm. Increasing the flow rate or decreasing “Low Flow Alarm
Set Point” may resolve this problem. Please note that a minimum flow rate of 0.5 gpm
is required for the heaters to turn ON.
High Pressure Alarm
A. Danger – The system exceeds “High Pressure Alarm Set Point”. It is recommended
that the system pressure be less than 65 psi. Reduce the pressure in the system by
shutting off the water supply and opening the output valve.
Discharge Temperature is
not stable
A. Check all parameters in Control Settings screen and compare them to Factory Settings.
B. Calibrating the Heater Amperage may be needed if the incoming voltage is not
following the ordered voltage. It is important that the full load amperage be found and
entered into the Heater Amperage value.
The “manual” Purge feature
is not functioning (Optional
on Aquarius® systems only)
A. Verify that an adequate supply of air is present.
B. Verify that the solenoid valves are operational.
C. Verify that the air operated valves (AOV) are operational.
Auto Purge feature is not
functioning (Optional on
Aquarius® systems only)
A. Verify that the Auto Purge feature has been enabled.
B. Check the Auto Purge settings.
C. The unit is “ACTIVE”. The Auto Purge feature can only be activated when the unit is in
“STANDBY” mode, the “Auto Reset” is set to ON and there is no flow through the unit.
D. Verify that an adequate supply of air is present to the solenoid valves.
E. Verify that the solenoid valves are operational.
F. Verify that the air operated valves (AOV) are operational.
