These products are ideal for enthusiasts seeking to upgrade their vehicle's cooling system, providing precise control and enhanced reliability. Whether you're looking to replace existing components or build a custom setup, Davies Craig's range offers versatile solutions to meet your needs.

 

Key Products:

• EWP^®/Fan Digital Controller Kit (#8002): This advanced controller manages both the EWP^® and electric fan, adjusting pump speed based on coolant temperature and activating the fan when temperatures exceed the set point. It features a user-friendly LCD display, audible alarms for temperature anomalies, and post-ignition operation to prevent heat soak. Davies Craig

 

• Digital Thermatic^® Fan Switch (#0444): Suitable for single or dual fan applications, this switch offers adjustable temperature settings and can be used with both Davies Craig and competitor fans. It supports both 12V and 24V systems, with options for different sensor types and mounting configurations. Davies Craig

 

• Digital Gauge Thermatic^® Fan/EWP® Switch Kit (#0500): Designed for precise control, this kit allows independent temperature settings for two fans and an EWP®. It includes a digital gauge with a temperature range from 5°C to 110°C (41°F to 230°F), and is compatible with both 12V and 24V systems. Davies Craig

 

• Variable Speed Controller Brushless Thermatic^® Fan & EWP^® (Part #0550): High-performance Controller designed to optimise thermal management in automotive, industrial, marine and EV applications. It provides intelligent, precise control of either Brushless dual Thermatic® Electric Fans or Electric Water Pumps (EWP®), ensuring maximum, efficiency, system protection and reliable operation in the most demanding environments. Davies Craig

 

• Variable Speed Controller Thermatic^® Fan & EWP^® (Part #0555): High-performance Controller designed to optimise thermal management in automotive, industrial, marine and EV applications. It provides intelligent, precise control of either dual Thermatic® Electric Fans or Electric Water Pumps (EWP®), ensuring maximum, efficiency, system protection and reliable operation in the most demanding environments. Davies Craig

 

• Thermatic^® Fan Switch Mechanical (Part #0401): The Mechanical Thermal Switch is adjustable from 40° to 100°C (104° to 212°F) suitable for 12v & 24v electrical systems. 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. Davies Craig

 

These products are ideal for enthusiasts seeking to upgrade their vehicle's cooling system, providing precise control and enhanced reliability. Whether you're looking to replace existing components or build a custom setup, Davies Craig's range offers versatile solutions to meet your needs.

 

Variation of #0444:

• Digital Thermatic® Fan Switch with 1/4" NPT Thermal Sensor Kit (Part #0445). Davies Craig

• Digital Thermatic® Fan Switch with 1/4" NPT Thermal Sensor Kit (Part #0448). Davies Craig

• Digital Thermatic® Fan Switch with 1/4" NPT Thermal Sensor & 35mm Inline Adapter Kit (Part #0435). Davies Craig

• Digital Thermatic^® Fan Switch with 1/4" NPT Thermal Sensor & 38mm Inline Adapter Kit (Part #0438). Davies Craig

Variation of #0401:

• Thermatic^® Fan Switch Mechanical Combo (Part #0400). Davies Craig

• Thermatic^® Fan Switch Mechanical with Relay (Part #0404). Davies Craig

 

Fan & EWP^® Switch / Controller Range

Specs
	Part #0444	Part #0401	Part #0500	Part #0555	Part #0550	Part #8002
Sales Variation	#0445, #0448 #0435, #0438	#0400, #0404	#0501	#0556	#0551	#8102
Operating Voltage	12 & 24 Volt	12 & 24 Volt	12 & 24 Volt	12 & 24 Volt	12 & 24 Volt	12 & 24 Volt
Maximum Current	40 Amps	20 Amps	40 Amps	40 Amps	N/A	12 Amps EWP Only
Fan Application	MAX 30A Each	Relay Switching Current MAX 15A	All DCPL Fans, EWPs & EBPs	All brushed DCPL Fans, EWPs	All Brushless DCPL Fans, EWPs	All DCPL Fans, EWPs
Speed	Single Speed	Single Speed	Single Speed	Variable Speed	Variable Speed	Single speed Fan & Variable EWP
Single Fan Control				Brushed FAN only	Brushless FAN only
Duel Fan Control		Wiring Dependant		Brushled FANs only	Brushless FANs only	Wiring Dependant
EWP control	ON / OFF ONLY (USE 8002)	ON / OFF ONLY (USE 8002)	ON / OFF ONLY (USE 8002)	Brushed EWPs only	Brushless EWPs only
EBP control	ON / OFF ONLY	ON / OFF ONLY	ON / OFF ONLY
EWP/EBP and Fan control		Wiring Dependant				EWP and Fans only
Duel Fan Start-Up Delay	10 Seconds		Independent set Temperature	4 independent Operating modes	5 independent Operating modes
Manual Override - Turn On		use #0404	Selectable Fan Override	2 Fan Override Wires	2 Fan Override Wires
Manual Override - Turn off				2 Fan Override Wires	2 Fan Override Wires
Manual Override - Voltage Selection
°C D °F Change		No temperature units
Temperature Setting Range	40°C To 110°C (104°F To 230°F)	40°C To 100°C (104°F To 212°F)	5°C To 110°C (41°F To 230°F)	5°C To 110°C (41°F To 230°F)	5°C To 110°C (41°F To 230°F)	40°C To 110°C (104°F To 230°F)
Temperature Setting Method	Push Button	Turn Knob	Push Button	Push Button	Push Button	Push Button
Coolant Temperature Detection	Requires #0409 or #0465		Requires #0409 or #0465
Air Temperature Detection
Transmission Temperature Detection	Ambient temperature only		Fluid measurment Requires #0465
Display Type	Led Segment		Led Segment	Led Segment + Status LEDs	Led Segment + Status LEDs	Black and white LCD
Temperature Display
Sensor Fault Display
Fan Operation Indicator						EWP and Fan
Over Temperature Warning
Audible alarm
Display dimmer
Mounting position	Engine bay	Engine bay	Vehicle Cabin	Engine bay	Engine bay	Vehicle Cabin
Mounting options	Built in Mounting holes	Bracket supplied	Universal 52mm gauge	Built in Mounting holes	Built in Mounting holes	Verious Mounting Options supplied

 

 

Digital Thermatic^® Fan Switch (Part #0444)

Variation:

• Part #0445 - Digital Thermatic® Fan Switch with 1/4" NPT Thermal Sensor Kit
• Part #0448 - Digital Thermatic^® Fan Switch with 1/8" NPT Thermal Sensor Kit
• Part #0435 - Digital Thermatic^® Fan Switch with 1/4" NPT Sensor & 35mm Inline Adapter Kit
• Part #0438 - Digital Thermatic^® Fan Switch with 1/4" NPT Sensor & 38mm Inline Adapter Kit

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 or can be placed directly into coolant and has an adjustable temperature range of 40ºC to 110ºC (104ºF to 230ºF).

• 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.
• IP66 Rated

   

 

EWP^® & FAN DIGITAL CONTROLLER (PART #8002)

(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®140, EWP®150 and Thermatic^® Fans.

The 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 targeted/set temperatures between 40°C (104°F) to 110°C (230°F) . 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
  Black & White Numerical LCD Screen

  Mounting options; bracket or nylon plate

  Suitable for 12v & 24v electrical systems, with relevant displays
  Celsius or Fahrenheit display option
  Warning Alarms: 

- Plus 10°C (14°F) set/target temperature
- Under temp 40°C after 5 mins
- Temp sensor error
- Over or under voltage
- EWP^® error

  Select any set temp range from 40°C (104°F) to 110°C (230°F)
  Set / targeted temperature memory
  Override feature to assist bleeding EWP^® & fail safe
  Input voltage display
  Compatible with billeted style Electric Water Pumps

  Genuine Thermometer, with coolant and targeted/set temp. displays

  Diagnostic check & warm-up signals

  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

  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  Davies, Craig LCD EWP®/Fan Digital Controller (#8002) as an engine management component has undergone extensive research, development, vehicle and test centre scrutiny.
 

	Technical Specification - EWP & FAN CONTROLLER
	Voltage range	12V DC to 29V DC
	Display LCD size	64.6mm (2.54”) x 55.6mm (2.19”)
	Maximum current	12Amps
	Warning alarm	High & low Temp., Above set temp., Sensor short circuit, Pump error, High & low voltage and Sensor open circuit
	Targeted (set) temperatures	Singular degrees from: 40°C (104°F) to 110°C (230°F)
	Memory	Set & targeted temperature
	Fan cut-in temp.	3°C (5.4°F) above the targeted (set) temperature
	Controller type	PCB with micro-processor
	Sensor type	Thermister in housing
	Overrun/ shutdown	-10°C (14°F) below set/target temperature or 3 minutes
	Indicators	Temperature, power, EWP®, test, fan, high & low temp, voltage, above set temperature (with alarm)
	Weight	100 grams (3.5 oz)
	Dimensions	Length = 98mm (3.8") Width = 95mm (3.7") Depth = 25mm (1”)

 

Variable Speed Controller

(Brushless and Brushed Motors)

High-performance Controller designed to optimise thermal management in automotive, industrial, marine and EV applications. It provides intelligent, precise control of either dual Thermatic^® Electric Fans or Electric Water Pumps (EWP^®), ensuring maximum, efficiency, system protection and reliable operation in the most demanding environments.    

Key Features

Flexible operating modes

• Four distinct control strategies to suit differing cooling system applications
• 12 & 24 Volt Applicable

Independent dual outputs

• Two fully isolated PWM signal channels allow for separate control of any combination of Brushless fan/s and/or Brushless EWP^®
• Multiple Brushless fans or pumps can be wired to a single channel, provided the combined PWM signal current does not exceed .5A.
• Unique setpoints, and operating modes can be applied to each output independently.

Shutdown control

• After ignition-off, the Controller will keep fans running for user-defined time or until defined shutdown time is reached to prevent heat-soak.

Manual overrides

• Dedicated ON/OFF control per channel by passes automatic control if required
• Configurable polarity accommodates different wiring and switch arrangements

Safety & failsafe options

• In the event of Sensor fault, outputs default to full speed to protect the system

Advanced Configuration options

• Temperature difference – defines ramping start relative to base set point
• Defines the speed at which the fan will start
• Shutdown time & temperature – controls post-ignition cooldown time & temperature
• Temperature offset – Adjusts for Sensor calibration
• Factory Reset – restores all parameters to default settings
• Adjustable PWM frequency – adjusts PWM output frequency to suit controlled Fan and/or EWP on the Brushless Variable Speed Controller

Rugged, reliable design

• IP67 waterproof rating ensures durability in harsh conditions

 

THERMAL SWITCHES

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 mechanical & electronic version.

 

MECHANICAL THERMAL SWITCH (PART #0400, 0401 & 0404) 

The Mechanical Thermal Switch is adjustable from 40° to 100°C (104° to 212°F) suitable for 12v & 24v electrical systems. 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.

  

 

 

DIGITAL GAUGE THERMATIC^® FAN / EWP^® SWITCH KIT

PART #0500 (12 & 24 Volt)

A bright, attractive, compact high visibility 52mm round gauge with LED digital display for mounting in the driver’s compartment!

Automatically activates single or twin fans or a fan and Electric Water Pump at your set / targeted temperature when extra cooling is required. It can also detect transmission fluid temperature.

It senses air temperature as it passes through the radiator with the sensor placed in the radiator fin section or alternatively the sensor can also be placed directly into the coolant system in combination with a Temperature Sensor Adaptor Kit (Part 0409).

The kit is sold in 12 Volt configuration.

*For 24 Volt application: 2 x 24V Relays required, sold separately (Part #10534)

• Independent set temperature for Fan 1 and Fan 2
• Universal 52mm gauge design.
• Extra-long temperature sensor wires 380 cm
• Can detect ambient temperature (air) as standard
• Can detect coolant temperature
  • Use #0465 for OE style 1/4 “NPT port install
  • Use #0409 for radiator hose install

 

TEMPREATURE SENSOR INLINE ADAPTER KIT (PART #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.

ADAPTER INLINE 38mm (2 x 1/4" NPT) Kit (PART #0409)

LOW COOLANT LEVEL ALARM KIT (PART #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.