Magnum Venus Plastech CFH-2000 - Manual (Page 22)

CFH -2000 Series Heater Manual
Rev. 01/2013 Page | 22
Troubleshooting:
Two basic problems may occur with the MVP Resin Heater:
• Loss of electrical current or heat
• Material flow blockage or leakage.
Loss of Electrical Current or Heat:
1. Indicator Light: If indicator light is not sequencing during operation, try preheat button
to see if light comes on. If not, inspect bulb and replace if defective. Also, check diodes
for continuity. If light does not operate and no heat is generated in the heater and
diodes are OK, then
DISCONNECT POWER FROM THE UNIT.
2. Fuses: Remove lid to electrical enclosure and check all fuses to insure they have not
blown out. If so, replace.
3. Loose Wire: Check all connections for loose or disconnected terminals.
4. Thermostat: NOTE: Air must be ON for the thermostat check. If thermostat controlled
function is not working, disconnect wires and check continuity through the thermostat
when it is cool. If there is continuity-check that it’s getting current from normally open
contacts of microswitch. If no continuity through thermostat, it is faulty and must be
replaced. If neither preheat or thermostat function works, check fuses first, then make
sure pilot light is not burned out (remove bulb and inspect). If there is damage to the
bulb or capillary the thermostat must be replaced.
5. Thermal Limiter: Once fuses and rest of circuit has checked out, disconnect wires
and check continuity through thermal limiter when it is cool. If there is no continuity
through switch when cool (room temp. 70° F) it is faulty and must be replaced.
Heat limiter may be adjusted to trip at different levels and may need readjustment.
MVP factory setting is to trip at approx. 120° F.
6. Heating Element: If all components to this point check out, heating element is faulty.
Heater element should be checked for leakage to ground and continuity through
element.