Precision Control Systems CoolIR C100 - Manual (Page 4)

Section 2 - Installation and Operation:
Safety
The maximum water/glycol temperature is 140ºF (60ºC). Precaution should be taken to
ensure this temperature is not exceeded. Refer to the installation section for proper sizing
instructions.
WARNING!
Hazardous voltages are present within the heating/cooling/control system. Setting the set
point potentiometer or control signal to minimum does NOT eliminate these hazardous
voltages.
Always remove AC line voltage from the system before making contact with internal
assemblies, line or load wiring, or fuses.
CAUTION!
Up to 480 volts AC may be present with longer heater length (25” and 38”).
Do not make any wiring connections when power is applied.
Disconnect power before performing any maintenance or service to the system.
Use extreme caution when adjusting calibration potentiometers on modules when
power is applied.
Always use an isolated oscilloscope for checking waveforms.
Sizing
The C100 can handle up to 3.3 KW of cooling load. The amount of cooling load is
dependent upon the heater style, lamp wattage, and heating application. Table 1 shows
how to size the C100. These steps are outlined below:
1. Determine heater wattage – This is a simple calculation based upon the wattage of
the lamps in the heater times the number of lamps in the system.
2. Determine the cooling factor (Fc). This takes into account how much heat is going
into the reflector that will be carried away by the cooling system.
3. Determine the number of C100 units required. Each C100 can handle up to 3.3 KW.
If the calculated cooling load is less than 3.3 KW, then one unit will work. Multiple
C100 units can be used in parallel. Consult factory.
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