Cornelius CH1500-CH7500 Návod k obsluze stáhnout pdf (Strana 11)

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Differential Thermostat Option

If the Chiller is equipped with a DIFFERENTIAL THERMOSTAT, the air probe will need to be located where

ambient temperature is to be monitored. The set-point will be the temperature sensed by this probe. This set-

point can be check by pushing the “SET-POINT” button located on the upper right of the digital display. Releas-

ing this button will display the system water temperature.

Cooling Start-Up

Once flow is established and the thermostat is set to the desired set-point, turn the control power switch to

“ON”. Ensure that the air is flowing in the left side (facing the control panel) and out the right side. If not, reverse

two of the three incoming power supply leads at the terminal strip. Once again, check for correct air flow. All

alarm indicators should be extinguished and the Chiller refrigeration system will cycle in order to maintain the

established set-point.

Re-check the reservoir level to ensure that it is ”FULL” (if so equipped) and add water if necessary.

The Chiller is now ready for normal operation.

TEMP.

HIGHCONTROL

POWER

COOLING

PRESSURE PRESSURE

LOWLOW

POWER

DWN

PUMP

2 & 3

8 & 9

Control Panel

1. TEMPERATURE INDICATOR/CONTROLLER (Thermostat)- Combines a precise temperature control and

accurate set ability with a convenient LED temperature readout that indicates system liquid temperature.

2. CONTROL POWER SWITCH- A simple (ON/OFF) switch that switches power to the control circuit. This

switch must be “ON” for the Chiller to operate.

3. CONTROL POWER LIGHT- A white light that indicates that Chiller control power is present.

4. COOLING LIGHT- A green light that indicates refrigeration system operation. This light cycles on and off in

response to the thermostat.

5. HIGH PRESSURE ALARM LIGHT- A red light that indicates high refrigeration pressure.

6. LOW PRESSURE ALARM LIGHT- A red light that indicates low refrigeration pressure.

7. LOW TEMPERATURE ALARM LIGHT- A red light that indicates and abnormally low system fluid temper-

ature.

8. PUMP POWER SWITCH (OPTIONAL)- A simple (ON/OFF) switch that switches power to the Chiller

pump. This switch must be “ON” for the Chiller to operate.

9. PUMP POWER LIGHT (OPTIONAL)- A white light that indicates that the Chiller pump power is present.

10. LOW FLOW/HIGH TEMPERATURE INTERLOCK (OPTIONAL)- Contacts are energized when abnormally

low fluid flow or an abnormally high fluid water temperature is sensed by Chiller controls.

11. LOW LEVEL AUDIBLE ALARM (OPTIONAL)- An audible alarm that indicates an unsafe reservoir level.

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