User Manual
32
When the Loop Alarm light (
26
) has been activated, due to a break in
the cooling water flow, even if the cooling water flow is re-established
the heated platen assemblies (
1
) and (
2
) will not be re-powered
automatically. To switch off the Loop Alarm light (
26
), the
set
temperature display (
27
) value must be adjusted to read the same
temperature as the
actual
display (
28
). When the Loop Alarm light (
26
)
goes out and if the cooling water flow has been re-established, the
relay inside the controller will be heard to click on again and power will
be allowed to heat up the platen surfaces.
Caution!
DO NOT
re-establish a cooling water flow until the heated
platens
actual
temperature display (
28
) falls below 80ºC.
(See Safety point E in
Section 4 –
page 8.)
Powering Up
Important:
Before powering up the temperature controller (
24
) all
electrical connections for the heated platen assemblies (
1
)
and (
2
) MUST be made to the controller and sufficient flow
of cooling water (greater than 0.2 liters/min) MUST be
established first to allow for deactivation of the in-line water
flow cut out switch (
5
). (See page 21.)
Switch on the power supply to the Atlas™ Series Heated Platens
temperature controller via the mains power switch (
25
) on the front
panel.
The temperature controller (
24
) is fitted with a WEST 6100+
temperature controlling unit (
29
). (See
Fig 13
.). When power is
supplied to the controlling unit (
29
), four zeroes each will be registered
in the upper (
27
) (in red color) and lower (
28
) (in green color) display
panels. The lower display panel (
27
) records the
set
temperature and
the upper display panel (
28
) registers the heated platens
(thermocouple sensing)
actual
temperature.
Warning!
If the thermocouple connection to the heated platens is
broken, OPEN will be shown in the upper display panel (
28
).