Thermal Care Oiltherm RO, Руководство по эксплуатации, установке и обслуживанию

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Step 4 – Fill with Heat Transfer Oil
Fill the unit with heat transfer oil suitable for
continuous operation at 575°F. There are many
manufacturers of heat transfer oils and each has
their own unique qualities. When selecting your heat
transfer oil, make sure the manufacturer guarantees
performance and suitability for use in this
application. We recommend Paratherm NF heat
transfer oil. This is available from our Parts
Department in 5 gallon (P/N 4203500) or 55 gallon
(P/N 9620303) drums.
Step 5 – Start the Unit
To start the unit press the Start button. If the oil level
in the reservoir is too low, the display will show
F I L L
and the Low Level Alarm Indicator light will turn on.
The Low Level Alarm Indicator light will remain on
until the oil level is sufficient for operation.
Oil becomes thick and is hard to pump when it is
cool. To protect the pump from stress at start-up the
unit will only start the pump if the temperature in
the tank is above 68°F. If the unit starts and the oil
temperature in the tank is below 68°F, the heaters
will come on but the pump will not run. When the oil
temperature is above 68°F the pump will turn on and
the heaters will continue to heat until the oil
temperature reaches 85°F. While in the initial heat-
up mode the display will only show an
A
indicating
that it is in an alarm mode and not in a running
mode.
Above 85°F, the unit enters a normal operation
mode. The status display will show a
1
and remaining
digits will show the tank temperature. The heaters
and pump remain on until the pump bearing reaches
250°F, at which time the controller will turn off the
heaters and continue to run the pump and the unit
will enter into normal temperature control mode.
Step 6 – Check Pump Rotation
Check the rotation of the pump by visually
confirming the motor shaft rotation matches the
directional arrow sticker on the motor case. If the
pump is running backwards, switch two of the main
power leads, after shutting off the disconnect switch.
Step 7 – Enter Set Point Temperature
To display the Set Point temperature press and
release the Temperature Adjust button. This will
show the Set Point temperature in the display. If no
other buttons are pressed for 5 seconds, the display
will return to the actual temperature.
Setting Set Point Temperature
To change the Set Point temperature press the
Temperature Adjust button and release to display
the current Set Point and then immediately used the
Increase or Decrease buttons to change the Set Point
until the desired temperature displays. Once the
desired Set Point displays, release all buttons. After 5
seconds, the display will return to the actual
temperature and the new set point is active.
The unit is now ready for service.
Adjusting Vacuum (Vacuum Units Only)
Some versions of the oil units have a special internal
venture and bypass line and an external valve to
allow some of the positive pump pressure to go
through the venture to create a vacuum on the oil
return line. This allows for evaluation of the mold by
pulling oil out of the mold.
Step 1 – Initiate a Vacuum Cool-Down Sequence
Units specially constructed to include an internal
venture and bypass line feature a modified version of
the automatic cool down function. This functions
similarly; however, instead of turning the unit off
after the cool down is complete it will sound the
alarm horn to indicate the unit is ready for the
vacuum mode and the pump remains on. To initiate
a vacuum option cool-down, press the Temperature
Adjust button and release and then pressure the On
button. When activated the tank temperature
displays with a C in front of it indicating the
automatic cooling sequence is active. This sequence
stops when the Stop button is pressed..
Step 2 – Adjust Vacuum Valve
The vacuum adjust valve is located on top of the
back of the unit. Start by fully closing this valve so
that the injector makes a vacuum in the return line
from process. The vacuum created will allow air to
enter the circuit through any leaks or openings in the
mold circuit. Operate the unit until the mold is
drained and press the Off button. Remember to
open the vacuum control valve to make the unit
ready for normal operation.