Magnum Venus Plastech CFH-4000 - Manual (Page 4)

4
CFH-4000 IN-LINE RESIN HEATER MANUAL
INTRODUCTION
The MVP Clean Flow Heater (CFH) is designed to allow higher flow rates, give better
control over temperature change and boasts a new easy maintenance design.
The CFH-4000 Heater is heated with a single 3000 watt cartridge type heating
element, requiring 240 Volt, single phase electrical service at 15 amps. Material
temperature is indicated on the thermometer on the outlet side of the heater.
The rheostat circuit consists of a bimetal timer that can be adjusted from 0 to 100% of
the heater’s wattage. The rheostat circuit is wired through a thermal limiter. This is a
safety feature that breaks the circuit to the heating element if heater block
temperature exceeds a safe level. In addition, all heaters contain 15 amp fuses in the
electrical enclosure for protection.
There are two models of the CFH-4000 in-line resin heater:
CFH-4000-B
Basic Clean Flow Heater
– In-Line Resin Heater
CFH-4000-AI Clean Flow Heater – In-Line Resin Heater – Air Interlock
The CFH-4000-B Basic Clean Flow Heater is the base model of the CFH heater with
a single temperature adjustment knob which allows for simple operation. Just adjust
the temperature control to the desired level to maintain the desired temperature
indicated on the thermometer.
The CFH-4000-AI Clean Flow Heater
– Air Interlock is unique in that it is an on
demand type heater and uses electrical power only when there is flow. The heater is
controlled by triggering the gun, the system regulator supplies pressure to the gun
valve which in turn activates the heater when the trigger is pulled. Once material is
flowing, an air signal is supplied to heater which engages the thermostat circuit.
When controlled with the air/electrical interlock heater switch, The CFH heaters
require a minimum of 15 psi air. The heat element is supplied with current from two
separate air circuits: the preheat circuit and gun trigger circuit. A preheat circuit is
operated to manually warm the heater block to desired operating temperature before
start-up.
CHAPTER
1