POLYURETHANE
MACHINERY
CORPORATION
PH-2 SERVICE MANUAL
12. TROUBLESHOOTING
• Problem: Primary heater does not heat and the display on the controller shows an
error message (SbEr, EEPE, CjEr, AdEr).
Solutions:
1. Check position 6 and 7 on the heater controller for loose wires.
If the wires are tight, move to the next step.
2. Remove the heater cover and check that the thermocouple wires are secure to the
harness going up to the controller.
If there are no loose connections replace the heater thermocouple.
• Problem: Primary heater controller shows excessive temperature and the circuit has
turned off.
CAUTION! The heater must be allowed to cool down before
continuing.
Solutions:
1. Set the controller set point at least 20 degrees lower than the temperature shown
on the controller. Briefly turn on the heater and look for the LED light on the
solid state relay to be on.
If the light is on, replace the controller.
If the light is off, replace the solid state relay.
• Problem: Primary heater Temperature drops excessively while spraying.
Solutions:
1. Temperature of the chemical in the containers is too cold.
2. Exceeding the flow rate specification of the machine. Use a smaller mixing cham-
ber to reduce flow.
3. Disconnect power to the machine. One or more of the fire rods in the heater have
malfunctioned. Remove the heater cover and disconnect the wires to measure the
resistance across each rod. Installing a smaller mixing chamber in the gun may
allow you to spray until a new rod(s) is installed.
CAUTION! If the rod that is used in conjunction with the
thermocouple is defective, do not operate the heater until the
rod is replaced.
Individual Ohm Measurement
1250 WATT 37 OHMS
1500 WATT 31 OHMS
1750 WATT 27 OHMS
REVISION 1.2 35
To Next Page
Loading...
