Warm Up (With Film Loaded) - usi CRL 40 Instruction Manual

8. WARM-UP WITH LAMFILM ALREADY LOADED
8.1 The normal method of warming up the machine will be with film loaded.
(a) Check that the "Forward/Reverse" knob is in the stop position.
(b) Turn on the main switch key (red power light should glow).
Dial the thermostat (heater) knob to the warm up temperature of 270 o F.
(c)
(d) Wait at least 15 minutes.
(e) Switch to "forward" and rotate rollers approximately one half turn.
(f) Leave for another 10-15 minutes. This is to allow the rollers to heat evenly around their
circumference and prevent cold spots.
(g) Reduce to the operating temperature of 250° - 270°F and commence laminating.
(h) Check that the machine is warmed up with a test laminate (preferably a dark colour).
A quick way to shorten the warm-up period and to eliminate cold spots is to run the
machine with just the film webs passing through the machine. The passage of hot
film accelerates the heating of the laminating rollers. While not recommended due to the
loss of expensive film it may be useful in urgent situations.
CAUTION :
Good quality lamination can only be achieved by thorough and even heating of the
rubber nip rollers. This requires plenty of warm-up time to ensure an even heat soak into the
rubber. Trying to rush the warm-up process will jeopardise both the adhesion and appearance of the
final product.
In the winter or cold areas it is important to ensure the room is at normal working
temperatures and the work you want to laminate is not too cold - This will ensure your
laminating is well stuck.
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