Davies Craig EWP and Fan Digital Controller Instructions

77 Taras Avenue
P.O. Box 363
Altona North
Vic 3025 Australia
Phone: +61(0)3 9369 1234
Fax: +61(0)3 9369 3456
Email: info@daviescraig.com.au
Web: www.daviescraig.com.au

Part No. 8020 – EWP® & FAN DIGITAL CONTROLLER INSTRUCTIONS

FOR INSTALLATION OF DAVIES, CRAIG DIGITAL CONTROLLER FOR USE WITH THE EWP® (ELECTRIC WATER PUMP), OR ELECTRIC FAN AND EBP (ELECTRIC BOOSTER PUMP).
Congratulations on your purchase of the Davies, Craig EWP® & Fan Digital Controller, designed to regulate the operation of the EWP® / EBP by varying the pump speed in response to the temperature of the engine and by switching your Thermatic® Fan on and off.
The Digital Controller works best with the removal of the engine thermostat. The Controller has a push-button on the control panel which adjusts the target temperature (set point). Generally, higher engine temperatures will give improved fuel efficiency and lower temperatures more power, but it is recommended that engine operational temperatures be checked with the manufacturer. In combination with a Davies, Craig Thermatic Fan® , the temperature of the whole cooling system can be set to the temperature you want. The Digital Controller will run the EWP® after ignition shutdown to eliminate heat soak, and cool down the engine evenly. This controller is only suitable for 12V negative earthed electrical systems.

PLEASE READ THESE INSTRUCTION IN THEIR ENTIRETY BEFORE YOU START WORK

KIT CONTENTS:
Refer Figure 1:

Item No.| Part
No.| Description|  Qty
---|---|---|---
1| 8120| EWP Digital Controller
Assembly| 1
2| 8411| Wiring Harness
(Includes 10Amp Fuse)| 1
3| 8414| Sensor Assembly| 1
4| 613| Self Tapping Screw| 4
5| 415| In-Line Adaptor| 1
6| 8512| Hose Clamps| 2
| 574| Ring Terminal| 1
7| 8510| Rubber Sleeves| 2
| 8920| Installation Instructions| 1
8| | |
Not| | |
Shown| | |
Not| 8921| Sensor Installation
Instructions| 1

INSTALLING THE EWP® & FAN DIGITAL CONTROLLER (Refer Figure 2 below) 

Do not begin the installation of the EWP & Fan Digital Controller prior to the EWP being installed. Refer to the EWP® Installation Instructions for details. Note: Wiring provided with EWP ®kit not required when using the Digital Controller, but keeps the wiring for Pump bleeding purposes.

1.  The Controller must be fitted inside the passenger compartment. Locate a hole in the firewall (approx. 20mm in diameter) where the harness wiring (including the sensor & pump “T-connector”) will be able to pass through. If a spot of adequate size cannot be located, then as a last resort, wires can be cut and re-joined.

2.  Pass the “T-connector of the wiring harness though the firewall into the engine bay and connect to pump.

3.  Pass the black sensor cable through the firewall and out to the thermostat housing.

4.  Connect the wiring harness to the controller and mount the controller (using 2 of the screws provided) in an appropriate position, such as near the fuse box, so that there is access to the temperature adjustment button — avoid mounting the controller where it may be exposed to direct sunlight. Ensure a good earth connection using the self-tapping screw provided. NOTE: The earth(ground) lead must be connected to a metal part of the body.

5. An additional screw is provided for mounting the Controller fuse holder where necessary.

6.  Connect the red wire from the wiring harness to the battery positive using the ring terminal provided. Connect
   the green wire from the wiring harness to an ignition source – the wires may be spliced then soldered if necessary. Ensure no wire is exposed, by insulating the join with electrical tape.

7.  Mount ‘Remote Test Light’ in a location, which will be visible. The ‘Test Light’ may be fitted by inserting it through a 4.6mm drilled hole in a plastic area of the interior/dashboard, or simply with adhesive tape. The ‘Remote Test Light’ has pin connections to assist installation. Heat shrink or insulation tape can be applied to these pin connections once the test light is mounted. This will ensure the connection points are insulated and secure.
   NOTE: In carrying out the wiring procedure, please bear in mind that it is advantageous to minimise voltage drop and this can be achieved by keeping the wiring as short as possible.

INSTALLING EWP® & FAN DIGITAL CONTROLLER SENSOR

There are two installation methods available:
a) IN-THERMOSTAT HOUSING METHOD (Refer to separate instruction sheet)
b) IN-LINE ADAPTOR METHOD (Preferred – Refer to separate instruction sheet)

BLEEDING THE COOLING SYSTEM

1. Fill the cooling system with appropriate coolant.
2. Disconnect the controller ‘T’ connector from the pump. Using the wiring harness provided in the EWP® kit, cut the blue and black wires close to the relay holder, discard the remainder and connect the ‘T’ connector to the pump. Loosely connect the blue wire to the battery positive and the black to negative. With the radiator cap off, run for 5 – 10 minutes to ensure that there is no air trapped in the cooling system. Continue to fill with coolant as the air is removed from the system. Disconnect the wiring from the battery to the pump and discard. Re-connect the pump to the controller ‘T’ connector. Re-fit the radiator cap before starting the engine.
3. Check hose clamps after a few hours operation of normal temperature and again after 20 hours running. Check for leaks.

OPERATION
CONTROLLER ALGORITHM-PUMP OPERATION
Figure 3 shows the typical operational curve of the pump. The ‘SET POINT’ is the temperature at which full battery/system voltage is supplied to the pump. This can be set to any of the 5 ‘SET POINTS’ available: 75ºC/165°F,80ºC/175°F,85ºC/185°F, 90ºC/195°F, 95ºC/205°F.
CONTROLLER OPERATION LED CHECK:
Every time ignition is turned ON, allLED’s will be on for 5 secs before returning to the normal operation mode. This feature allows for checking that all LED’s are operational.
DIAGNOSTICS:
To avoid any premature diagnostic indication during ‘temporary’ events – especially where the engine is OFF for very short periods, the diagnostic functions will be activated 2 minutes after ignition is switched ON.
OVER-RUN MODE:
To eliminate heat-soak after ignition shutdown, the Controller will continue to run the EWP® for 2 minutes or until the temperature has reduced to 5°C/9°F below ‘set-point’ – whichever occurs first. The “Over-Run” feature will eliminate heat soak but will be more effective when used in conjunction with a Thermatic Fan.

LED DISPLAY:
The following identifies each LED and its operational status:
TEMP LED (GREEN):
FLASHING 75ºC/165°F LED = Sensor temperature is below 75ºC/165°F.
ON = ACTUAL sensor temperature.
PWR LED (AMBER):
ON = The controller has power.
EWP LED (GREEN):
FLASHING = EWP operating in ‘pulsing’ mode – Refer Figure 5, areas & .
ON = Electric Water Pump (EWP® A B C ) running between 6V – Battery Voltage: Refer Figure 5, area .
FAN LED (GREEN): ON= Fan operating
TEST LED (RED):
ON = System warning has been triggered. Therefore, refer to “Diagnostic Chart” in order to determine possible Cause, and take measures to correct the problem.
REMOTE TEST LIGHT (RED):
This light will “flash” whenever the TEST LED is on. The purpose of this light is to provide remote indication when the TEST LED has been activated.
OVER-RUN MODE:
During “Over-Run” mode:

– Actual sensor temperature will be indicated by GREEN temperature LED.
– PWR LED will flash
– EWP LED will be solid and pump will run at full battery voltage.
– FAN LED will be solid and Fan will run until temperature below the target temp.

SETTING THE EWP® & FAN DIGITAL CONTROLLER
The Digital Controller can be set in accordance with your requirements. The factory ‘set-point’ on the controller is 85°C/185°F. This setting can be changed by using the ‘set-point’ adjustment button on the control panel as follows:
i. Pushing the ‘SET’ button once will indicate the present setting with an amber LED.
ii. When ‘SET’ button is held down, the ‘set-point’ settings will be scrolled through. Button should be released when desired ‘set-point’ is reached.
iii. The LED will then flash and the setting must be confirmed (‘locked in’) by holding button down for 2 sec.
If setting is not confirmed within 5 sec, controller will revert to previous setting.
iv. To check ‘SET’ point, see (i) above.
It is recommended that initially the ‘set-point’ be set to approximately the mechanical thermostat opening temperature. Use a lower ‘set-point’ to run the engine colder or a higher ‘set-point’ to run the engine hotter.
Generally, running the engine slightly colder will increase the power and running the engine slightly hotter will improve the fuel efficiency.
To verify ‘SET’ temperature, run the engine and monitor existing engine temperature gauge.

CONTROLLER INSTRUCTIONS

For your convenience, brief operating instructions are available on the reverse side of the controller.
Davies Craig Thermatic FanWiring to the Digital Controller
Please follow the below instructions 1&2 if you are using the wiring loom provided with Davies Craig
Thermatic Fan.

1. Cut the green wire from the Fan wiring loom to a sufficient length, this wire (with relay) to be joined with the black traced green wire from the Digital Controller
2.  Cut the black wire before the ring terminals attached, and then join sufficient length of wire to connect the battery positive as shown in the diagram below (85). Please discard the ring terminal part.

CONTROLLER FOR FAN ONLY CONNECTION

The Davies, Craig Digital Controller is programmed to earth the electric fan relay at 3°C above the target set point. The Controller will run the fan until the coolant temperature is below the target point.
To enable fan only control without using an Electric Water Pump, connect the supplied remote LED to the controller wires labelled “PUMP” as shown below

Please refer to the figure 5 for fan to controller wiring details. Please call Davies, Craig at (03)93691234 if you required another remote LED to complete the wiring.

EWP& FAN DIGITAL CONTROLLER TECHNICAL SPECIFICATION

(165º, 175º, 185º, 195º, 205ºF)
   Fan Cut in Temperature|         3ºC/5.4°F above the set temperature
   Sensor Type|   Thermistor in waterproof housing
    Time Out|     2 Min. (or Set –5ºC/9°F) after ignition OFF
  Weight|   90 grams (3.2 oz.)
   Dimensions|    101mm (L) X 95mm (W) X 35mm (D)
[4” (L) X 3-3/4” (W) X 1-3/8” (D)]

These installation instructions will suit most situations. However, many conditions of engine design, environment and driving conditions or styles may call for other configurations not described here.
Advice is available from Davies, Craig and we would very much appreciate your feedback.

INSTALLATION RECOMMENDATIONS

•  For improved heater performance on vehicles which have the heater inlet (return) and outlet ports in the mechanical pump housing, Davies, Craig has developed the Electric Booster Pump, EBP® , which fits into the heater hose and boosts flow through the  heater circuit and/or cylinder heads. There is more information on our web page www.daviescraig.com.au
•  LPG (Liquid Petroleum Gas) vehicles require constant flow through the LPG converter and if the EWP® is used in conjunction with the Digital Controller, we recommend the installation of an EBP® (Electric Booster Pump) to overcome freezing of the converter body at start up.

TABLE 1: COOLING SYSTEM DIAGNOSTIC CHART
The following table lists the Digital EWP® & Fan Controller diagnostic capability for your cooling system and the LED diagnosis sequence.
NOTE: In all instances where the TEST light is ON, the EWP is running at full battery voltage.

NOTE: When a temperature related error has occurred, this may not necessarily be associated with the pump but could be associated with the overall cooling system. e.g Fans, fan thermal switch, coolant level. Therefore, inspection should not be limited to the pump alone in trying to isolate the cause
PLEASE RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE

CAUTIONS

•  Engine temperature must be monitored closely at all times but especially immediately after installation and until pump operation and capacity have been proved.
• Do not use the vehicle’s engine management system or wiring connected to the vehicle’s engine management system as an ignition source because it may cause failure of the management system and/or the electrical system. The ignition source must be a steady positive supply of 12-14VDC.

WARRANTY

We warrant that for a period of two years from the date of purchase, we shall carry out, free of cost, any repairs that are reasonably necessary to correct any fault in the operation of your Electric Water Pump provided that such a fault is directly attributable to a defect in the workmanship or materials used in the manufacture of the part(s) and is not due to installation other than described in these instructions. Labour and consequential costs are excluded DAVIES, CRAIG PTY. LTD.
REGISTER YOUR WARRANTY AT:
http://www.daviescraig.com.au/Warranty-content.aspx

P/NO: 8920

Documents / Resources

| Davies Craig EWP and Fan Digital Controller [pdf] Instructions
8020, 8927, EWP and Fan Digital Controller, Fan Digital Controller, Digital Controller, Controller
---|---

References

• Davies Craig
• DAVIES, CRAIG WARRANTY POLICY AND CLAIM FORM - Davies Craig

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