Switches & Controllers
LCD EWP & FAN DIGITAL CONTROLLER (PART #8000) (12 & 24 VOLT)
(PATENTS: USA 6425353, EU 1133624, AUS 756453)
For optimum control of Davies, Craig 12 Volt and 24 Volt Electric Water Pumps.
Suits EWP®80, EWP®115, EWP®130, EWP®150 and Thermatic® Fans.
The LCD EWP® / Fan Digital Controller has two specific functions. This unique Digital Controller will manage the operation of the EWP® by varying the speed of the pump in response to the coolant temperature and manage control of your electric engine fan.
The Controller has a push-button to lock in any one of the nine targeted/set temperatures. It’s highly recommended you set/target the Controller to closely match your engine’s existing thermostat temperature.
Generally, higher engine temperature will offer improved fuel efficiency and lower engine temperature more power. The Digital Controller will operate the engine’s electric fan automatically once the engine has reached 3°C (5.4°F) above the targeted (set) temperature. Another significant benefit is that the Controller allows
the EWP® to run on after ignition shutdown to eliminate heat soak.
Features of the LCD Controller:
- The prominent blue Liquid Crystal Display screen (pictured)
- Now suitable for all 12v & 24v electrical systems, with relevant displays
- Genuine Thermometer, with coolant and targeted/set temp. displays
- Diagnostic check & warm-up signals
- Nine (9) targeted/set coolant temperatures, 60C (140F) to 100C (212F)
- Flashing “EWP®” logo signifying water pump in operation
- Davies Craig Thermatic® Fan logo, circulating signifying fan in operation
- Flashing High & Low Voltage indicators
- Low & High Temp indicators
- Audible alarm -
* if coolant temp doesn’t exceed 40ºC (104ºF) within 5 mins of start-up
* when coolant temperature exceeds 10ºC (50ºF) of set/target
* when coolant temperature exceeds 100ºC (212ºF)
- Above Set/Target Temperature indicator accompanies audible alarm
- Temperature Sensor short & open circuit indicators
- Automatic time-out, EWP® runs for 3 minutes or until engine temp has reduced to -10◦C (-14F) below set/targeted temp whichever occurs first.
The updated Davies, Craig LCD EWP®/Fan Digital Controller (#8000) as an engine management component has undergone extensive research, development, vehicle and test centre scrutiny.
The updated LCD Digital Controller how has two specific functions. This unique Controller will now manage the operation of the EWP® by varying the speed of the EWP® in response to the temperature of the engine and manage control of your electric engine fan. The Controller has a push-button on the facia panel that offers target temperatures, 60ºC (140°F) 65ºC (150°F) 70C (160°F) 75ºC (165°F) 80ºC (175°F) 85ºC (185°F) 90ºC (195°F) 95ºC (205°F). Generally, higher engine temperature will offer improved fuel efficiency and lower engine temperature more power. The LCD Digital Controller will now operate the engine’s electric fan automatically once the engine has reached +3c above the target temperature. A significant benefit too is the Controller allows the EWP® to run on after ignition shutdown to reduce heat soak. It is recommended that engine operational temperatures be checked with manufacturer.
The LCD Digital Controller can be used with our EBP however it is not recommended as it will not vary the speed of the pump in response to temperature but rather simply turn the pump on and off once the top end temperature is reached. For a far more economical & appropriate solution, we would recommend Part Number 0401 & 0444 to turn the EBP on and off at your set temp.
Specifications – LCD EWP/Fan Controller (#8000) compared with #8020.
|Specifications||#8020 (Superseded Controller)||#8000 (New Controller)|
|PATENTS||USA 6425353, EU 1133624, AUS 756453||USA 6425353, EU 1133624, AUS 756453|
|Voltage range||12V to 15V only||12V to 29V|
|Display||LED bulb||LCD Display (70mmX60mm)|
|EWP Display||LED bulb||‘EWP’ logo flashing|
|Fan Display||LED bulb||DCPL Fan logo rotating|
|Warning Alarm||N/A||Yes (with ON/OFF switch)|
|Set temp range||5 settings 75c (165f) to 95c (205f)||9 settings 60c (140f) to 100c (212f)|
|Actual Temp Display||LED change sequence||LCD real time thermometer|
|Low Voltage detection||>11V||@12V system <11V
@24V system <21V
|High voltage detection||<14.9V||@12v system >17.5V
@24v system >28.4V
|Error display||Test light On & Flashing LEDs||Audio Alarm, Real time error display|
|Temp setting selection||Push button sequence||Push button sequence with audio|
|Low temp error||System temp to 30c (86f) in 2 minutes||System temp to 40c (104f) in 5 minutes.|
|Over run/shut down||2 minutes||-10c (14f) of Targeted/Set Temp or 3 minutes|
*Note: This controller (Part No. 8000) is set up for negativley earthed systems however with a wiring adjustment, can also handle positive earthed systems.
A Thermal Switch is a device which senses the temperature of the coolant and turns on the electric fan when cooling is needed over a wide range of temperatures. Davies Craig offers two types of switches, a mechianical & electronic version.
MECHANICAL THERMAL SWITCH - PART No: 0400, 0401 & 0404 (12 & 24 VOLT)
The Mechanical Thermal Switch is adjustable from 40° to 100°C (104° to 212°F).
It is mounted near the radiator and the stainless steel probe fitted inside the radiator hose making contact with the coolant. The mechanical thermal switch is then connected to the ignition circuit for operation. The thermal switch & relay kit (Part 0404) enables a fan to operate both thermally and also when the air conditioning is running.
ELECTRONIC THERMAL SWITCH - PART No: 0444 (12 & 24V)
Davies, Craig Pty Ltd very own designed Digital Thermatic Fan Switch Kit can be used with our Thermatic Fans, EWP's & competitors Fans. It senses air temperature as it passes through the radiator and has an adjustable temperature range of 40ºC to 110ºC (104ºF to 230ºF). The Temperature Sensor is placed in the radiator fin section as close to the hot coolant inlet as possible so no need to cut hoses.
- This switch is operated thermally & also when the air conditioning is in operation.
- Simply set the temperature by pressing the set button.
- It can run 1 or two fans. The second fan (if applicable) will start 10 seconds after Fan #1 runs.
- To convert temperature reading from Centigrade to Fahrenheit, remove the Jumper Pin on the unit next to the LED screen.
TEMPERATURE SENSOR ADAPTOR KIT - PART No: 0409
Now there is no need to squeeze the probe of the Mechanical Thermal Switch or EWP Controller between the radiator inlet and radiator hose. This simple and economical Adaptor Kit allows easy fitting directly into the radiator hose. Just fit probe into compression fitting, remove about 17mm of radiator hose, fit adaptor between each end of hose, secure hose clamps and the job is done. The kit comes with everything you need for a watertight and effective installation. We even supply rubber sleeves to enable fitment to radiator hose sizes from 32 to 40 mm diameter.
LOW COOLANT LEVEL ALARM KIT - PART No: 1035
The Low Coolant Level Alarm Kit will monitor the coolant level in engines and will immediately identify low coolant should this situation develop. This cool new device comes with a loud audible alarm and will help prevent an over-heating engine and significant engine failure. The unit simply fits into your engine’s top radiator hose and will alert you to the loss of engine system coolant via an audible alarm. This situation may occur when a radiator hose splits or frays, a radiator springs a leak and the engine’s coolant is either low or lost. The vehicle’s simple temperature gauge will not alert the driver to this event and the Low Level Coolant Alarm adds security to assist monitor your engine’s coolant level. Loss of engine coolant can cause the water pump to lose pressure and will quickly develop into to an overheated engine. Most engine temperature protection systems and gauges will not detect coolant loss as they rely on sensing the coolant temperature. When the coolant is lost, the gauges cannot sense engine temperature and as such expensive engine failure may occur.
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