Formech IMD508, Installation, Operating And Service Manual

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Manual - Formech IMD508
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Machine Adjustments & Settings
Replacement of Heating elements – Top Heater
Ensure the power is isolated and the air supply is switched off. Remove any side panels to allow access.
Remove the heater cover relating to the suspect problem element. Locate the problem element. Top heater
elements are rated at 230V & 125Watts. The element may be tested by measuring the resistance using an
electrical multi-meter set to resistance. One of the element terminals would need to be disconnected to do
this. When a faulty element is discovered, disconnect it and remove the clips. The fitting of the new element
is in reverse.
Elements on the IMD508 are fitted with thermocouples and hence they are required to be connected
correctly; 1.The 2 centre wires are the thermocouple wires, one of these is marked, take note when
disconnecting to ensure it is connected in the same way when reconnecting. Incorrect reconnection will
result in wrong readings. 2. Ensure the thermocouple and power wires are not crossed. Incorrect connections
will result in damage to control system components.
It is recommended that the heater tray electrical connections are periodically checked. This requires
systematic tightening every terminal screw. This procedure must be performed within the first 6 months of
use or sooner if usage is heavy. Repeat this procedure every 12 months thereafter.
Replacement of Heating elements – Bottom Heater
Bottom heater elements are rated at 230V & 125Watts. Test and replace in the same method as the top
heater. Access to the bottom heater is complex due to its position. The rear of the bottom heater box would
need to be removed and access to the rear of the machine may be required. It is recommended that bottom
heater servicing is carried out by Formech International.
Auto-Levelling & Bottom Heater Safety Sensing.
This machine is fitted with an automatic sheet levelling system. An optical sensor directs a beam of infrared
light across the machine. The system comprises of a transmitter and receiver. If the beam is broken air
is pumped into the machine cabinet under the plastic lifting it until beam transmission is re-established.
Through beam sensors are reliable. The optical windows positioned in front of the sensors on the inside of
the mould box may need periodic cleaning.
Faulty auto-level sensing would cause the air to blow continuously in to the vacuum cabinet.
Faulty bottom heater safety sensing will prevent the bottom heater driving forwards.
Verify the signal at the PLC data input 11 & 12 of PLC module 1. Refer to electrical information page 8.
Before any maintenance work is carried out both electrical and air supplies must be locked in the
OFF position. Only a qualified electrical technician may work on any parts carrying mains voltage.
That person is responsible for ensuring that the machine is in a safe condition before allowing
services to be restored.