20
World Leaders in Ultra-Pure Heating
www.heateflex.com
405 E. Santa Clara St., Arcadia, CA 91006-7218
O
: (626) 599-8566
F
: (626) 599-9567
Suggested Operational Inspection
To reduce the possibility of unanticipated problems, the Aquarius
D.I. Water
Heating System should be thoroughly checked every 6 months. A thorough
inspection should consist of a check for leaks, confirm correct operation of the safety
interlocks, and verify calibration.
1. Leak Check
Open door or remove side panels (left or right)
Pressurize the unit (65psi. MAX)
Check all plumbing connectors. If there is a leak, fix or replace the
components.
The HEATEFLEX
Aquarius
D.I. Water Heating Systems are controlled by the
PF2000
, a PLC-based controller. The controller’s basic function is to control the
discharge temperature of the water. Additionally, it monitors temperature, flow,
voltage, pressure, and resistivity (optional) and provides safety interlocks for the unit.
2. Safety Check
To check Safety PLC’s safety circuits, open the controller panel;
disconnect one sensor lead wire from the Safety PLC (flow sensor, liquid
level sensor, pressure sensor or thermocouple). (Note: Opening the
cabinet will cause the Door Interlock to trigger shutting down all power to
the unit and preventing the unit from starting up. Contact the factory for
additional information.) The controller should sound an alarm signal
indicating an open analog sensor or open thermocouple. Reconnect the
sensor to the correct terminal after testing. Test the sensors one at a
time. If no alarm sounds, the controller may be defective, contact the
factory or replace the controller.
3. Check Safety PLC’s Calibration
Input Thermocouple
Process Thermocouple
Flow Sensor
Pressure Sensor
Voltage Transducer
Resistivity (Optional)
Calibration can be adjusted in the
System Set Up ► System Calibration.
A user
password is required to modify these values.
