Trebor IQ Chemical Heater - Manual (Page 15)

MODEL IQ CHEMICAL HEATER OPERATION / MAINTENANCE MANUAL PAGE 15
6
TROUBLESHOOTING
The following is an outline of routine troubleshooting techniques. For conditions
not covered in this section consult Trebor or a factory authorized representative.
6.1 IRREGULAR TEMPERATURE CONTROL
SYMPTOM CAUSES SOLUTIONS
Poor Temperature Control Low liquid flow
Location of outlet
temperature sensor
Incorrect control settings
Increase flow.
Relocate outlet
temperature sensor
closer to heater outlet.
Adjust control settings or
scheme.
Heater Does Not Heat Failed heater
Wiring short
Interlock alarm
Control system error
Check heater element per
Section 6.2.
Check heater wiring.
Address system alarms.
Evaluate controller.
6.2 HEATER ELEMENT CHECK
Lockout and Tagout power to the heater. Disconnect the heater power electrical
connections and measure the resistance between power wires or to the neutral
wire. Resistance should be less than the values listed in Table 6-1.
Heater Power
Power Wire to
Power Wire
Power Wire to
Neutral Wire
3-kW, 1Ø <18
Ω
N/A
4-kW, 1Ø <15 Ω N/A
6-kW, 1Ø <28 Ω N/A
3-kW, 3Ø <106 Ω <53 Ω
4-kW, 3Ø <82 Ω <41 Ω
6-kW, 3Ø <52 Ω N/A
Table 6-1: Element Resistance Check