DAVIES CRAIG Alloy EWP80 Electric Water Pump EWP

Product Information

Specifications:

• Models: EWP80, Alloy EWP80, EWP115, EWP140, EWP150
• Manufacturer: Davies Craig
• Country of Origin: Australia

Product Usage Instructions

Mounting Bracket (sold separately)
Ensure to purchase the mounting bracket separately if needed for installation.

EWP Installation Options

Installing an EWP as an Auxiliary Pump

1. Install the EWP into the bottom radiator hose while leaving the mechanical water pump in place.
2. Remove the thermostat and drill two approx. 3mm holes in the thermostat plate for coolant circulation.
3. Re-install the thermostat ensuring cleanliness and use a new gasket if required.

Disabling Mechanical Water Pump

1. If required, soft mount the EWP to protect against vibration.
2. For certain models, consider using the Part #8700 Mounting bracket for additional support.

Disengaged Mechanical Water Pump (Recommended)

1. Remove the mechanical water pump and impeller, using the pump pulley as an idler.
2. Block bypass passages and re-install the disengaged water pump with proper gaskets.

Removed Mechanical Water Pump (Ideal)

1. Remove the mechanical water pump and thermostat, and install a Davies Craig EWP Block Adapter or blanking plate.
2. Ensure cleanliness and use appropriate gaskets or sealant to prevent leaks.

Bleeding and Orientation Tips
Follow specific orientation guidelines for EWP80 and Alloy EWP80 to prevent air trapping in the seal chamber. For EWP115, EWP140, and EWP150, ensure correct inlet orientation to avoid air trapping.

EWP Wiring
Connect the black wire of the EWP motor to earth (negative) when wiring. For LCD EWP & Fan Digital Controller, follow the recommended installation instructions.

Final Checks
Road test the vehicle after installation and wiring completion. Allow the engine to reach normal operating temperature and check the coolant level once cooled. Top up if needed.

FAQ:

• Q: Can I install the EWP80 with the inlet pointing vertically downward?
  A: It is recommended to avoid this orientation to prevent air trapping in the seal chamber. The preferred orientation is with the inlet horizontal or on an upward angle.

• Q: How should I wire the EWP motor?
  A: The black wire of the EWP motor must be connected to the earth (negative) when wiring.

EWP® Remote Electric Water Pump Only Instructions

EWP80, Alloy EWP80, EWP115, EWP140, & EWP150
Digital Installation instructions are located here: https://daviescraig.com.au/instructions.

PLEASE READ ALL THESE INSTRUCTIONS THOROUGHLY BEFORE YOU START WORK.

1. DO NOT RUN THE PUMP DRY OR YOU WILL DAMAGE THE SEALS
2. DO NOT HARD MOUNT THE PUMP – FIT TO RADIATOR HOSE OR USE PART #8700 MOUNTING BRACKET (sold separately)

EWP INSTALLATION OPTIONS

NOTE:
Before the EWP® is installed it is recommended that the cooling system is properly flushed.

INSTALLING AN EWP AS AN AUXILIARY PUMP

• Leaving the mechanical water pump in place, install the EWP into the bottom radiator hose.
• Remove the thermostat and drill two approx. 3mm (1/8″) holes in the thermostat plate to allow some coolant circulation. Re-install ensuring that the thermostat housing is clean, and a new gasket is used if required.

DISABLING MECHANICAL WATER PUMP

• Leaving the mechanical water pump in place, install the EWP into the bottom radiator hose and remove the manufacturer’s thermostat.
• You will need to bypass the water pump pulley by installing an appropriate length belt. This method makes for an easy installation.
• If running the pump continuously remove the thermostat and drill two approx. 3mm (1/8″) holes in the thermostat plate to allow some coolant circulation. Re-install ensuring that the thermostat housing is clean, and a new gasket is used if required.
• In both these cases, the EWP will pump past the impeller of the mechanical water pump.

In most cases, the weight of the EWP will be adequately supported by the radiator hose. Where mounting is required, the EWP must be soft-mounted to protect against vibration. For the EWP115, EWP130, and EWP150 Part #8700 Mounting bracket is recommended.

DISENGAGED MECHANICAL WATER PUMP (RECOMMENDED)

Note: recommended when using the LCD EWP® & Fan Digital Controller

• Remove the mechanical water pump.
• Then remove the impeller from the mechanical pump shaft. Retain the mechanical water pump using the pump pulley as an idler to avoid re-routing the drive belt.
• Block any bypass passages and re-install the disengaged water pump ensuring that all gasket surfaces are clean, and the new gaskets are properly fitted to prevent leaks.
• Install the EWP into the bottom radiator hose and remove the thermostat.

REMOVED MECHANICAL WATER PUMP (IDEAL)

Note:
recommended when using the LCD EWP® & Fan Digital Controller

• Remove the mechanical water pump and thermostat from the engine.
• Install a Davies Craig EWP Block Adapter or blanking plate (not supplied). Ensuring the gasket surfaces are clean and the appropriate gasket or sealant is used to prevent leaks.
• Install the EWP into the bottom radiator hose. This method may require you to modify or replace the standard radiator hose.
• Install an appropriate length belt (not supplied) to drive the accessories.

EWP PREFERRED ORIENTATION

Note:
The EWP® is not a self-priming water pump.

The EWP can be installed in any orientation once it is completely bled of air. The preferred orientation will assist with bleeding the pump and preventing air from becoming trapped in the pump.

FOR THE EWP80 AND ALLOY EWP80

• Avoid installing the EWP80 with the Inlet pointing vertically downward, where air can be trapped in the seal chamber.
• The preferred orientation for the EWP80 is with the inlet horizontal or on an upward angle with the outlet at the highest point.
  • This orientation is a temporary requirement to bleed the pump and ensure there is no air trapped within the pump housing. The pump can be set up in another orientation upon completion of the bleeding procedure.

EWP80 PUMP ORIENTATION DIAGRAM

FOR THE EWP115, EWP140 AND EWP150

• The preferred orientation for the EWP115, EWP140, and EWP150 is with the inlet horizontal or on a downward angle with the outlet at the highest point.
• Avoid installing the EWP115, EWP140, and EWP150 with the Inlet pointing vertically Upward. in this orientation, air can be trapped in the seal chamber.

EWP WIRING

IMPORTANT:
The black wire of the EWP motor must go to earth (negative)

Wiring for Continuous Running

• Connect PIN 86 (GREEN) of your relay (not supplied) to the ignition.
  • You may use a manual switch or Thermatic switch® in the ignition wire.
• Connect PIN 30 (RED) of your relay to a fused battery positive
• Connect PIN 85 of the relay and the BLACK wire from the EWP to Earth (negative).
  • You may need to replace or remove the connecter on the EWP to match your wiring.
• Connect PIN 87 (BLUE) of your relay to the positive wire of the EWP.

Wiring with LCD EWP & Fan Digital Controller, #8002 (Recommended)
Install the Controller as per instructions and plug the EWP into the “T-connector on the BLUE and BLACK wire on the controller’s loom.

Wiring for Control by Thermatic® switch (Recommended for auxiliary pump applications only)
Davies, Craig has a full range of Thermatic® Switches available in both mechanical (#0401, #0404 & #0400) and Digital Thermatic® Switches (#0444 &

0500).

• Wire the pump as directed by the wiring instructions provided with the Thermatic® Switch.
  • All Davies, Craig Thermatic® Switches are ON/OFF.
  • To allow EWP to run on after hot shutdown, wire the Switch directly to the battery.

IN ALL CASES ONCE EWP INSTALLATION AND WIRING ARE COMPLETE

• Road test the vehicle and allow the engine to reach normal operating temperature.
• Check the coolant level again once the engine has cooled sufficiently. Top up if required.

INSTALLATION RECOMMENDATIONS

• It is highly recommended the EWP® is operated for at least 5 minutes of constant running every month. This will minimize the build-up of any sediment in the EWP and also lubricate parts within the pump.
• For some vehicles, cold climates, or when running the EWP continuously you may require the use of a thermostat to help control the coolant temperature. In these cases, you will need to drill 2 x 3mm (1/8″) holes in the thermostat plate.
• The installation of an EWP® may affect coolant flow through auxiliary coolant loops and the heater core. This change in flow may affect the performance of these loops unless the return line is relocated to the EWP Inlet.
• Block the Thermostat bypass passage, to prevent flow from your EWP passing directly back to the radiator without passing through the engine.

These installation instructions will suit most applications but there are circumstances surrounding some engine designs, environments, and the nature of the system involved, which may require other installation arrangements not outlined here. Frequently Asked Questions (FAQ) are listed on our website www.daviescraig.com.au Emails can be directed to info@daviescraig.com.au or Telephone at +61 (0) 3 9369 1234 during business hours.

OPTIONAL ACCESSORIES

OPTIONAL ACCESSORIES (not included)

Thermatic ® Switches & EWP ® Controller| EWP ® Adapters
---|---

8002| EWP® & Fan Digital Controller| # 8301| Alloy 90° Elbow Flange Adapter:

35mm (1 3/8″) Hose Barb

0500| Digital Gauge Thermatic® Fan/EWP Switch| # 8302| Alloy Flange Adapter:

35mm (1 3/8″) Straight Hose Barb

0444| Digital Thermatic® Switch| ****

8303

| Alloy 90° Elbow Flange Adapter: 38mm (1 1/2″) Hose Barb with Female -16AN ORB

0400| Thermatic® Switch Combo| ****

8304

| Alloy Flange Adapter: 38mm (1 1/2″) Straight Hose Barb with Female -16AN ORB

0404| Mechanical Thermatic® Switch & Relay| # 8307| Nylon Flange Adapter:

35mm (1 3/8″) Straight Hose Barb

0401| Mechanical Thermatic® Switch| # 8309| Nylon 90° Elbow Flange Adapter:

35mm (1 3/8″) Hose Barb
Switch Accessories| #1024| 90° Swivel Elbow Adapter Fitting: -16AN ORB to 38mm (1 1/2″) Hose Barb

0409| Temperature Sensor Adapter Kit| #1025| Alloy Flange Adapter: Male -16AN

0418| Compression Fitting 1/4” NPT| #1026| Alloy Flange Adapter: Male -20AN

0465| ¼” NPT Thermal Sensor Upgrade Kit Suits Digital Thermatic® Switches

0444 & #0500| #1027| Alloy Flange Adapter: 25mm (1″) Straight Hose Barb

18415| Coolant Temperature Sensor – (¼ NPT)| #1028| Alloy Flange Adapter:

19mm (3/4″) Straight Hose Barb
EWP ® Accessories| #10414| 35mm (1 3/8”) In-line Adapter no hole

0415| Air Bleed Adapter Kit| #10415| 35mm (1 3/8”) In-line Adapter 1/4 NPT

Threaded hole

8700| EWP® Mounting bracket| #18510| 3mm (⅛”) Rubber Sleeves Adapter

8520| 12V EWP Relay Wiring Kit| #18511| 6mm (¼”) Rubber Sleeves Adapter

8521| 24V EWP Relay Wiring Kit| #8315| EWP® Heater Return Adapter Kit

SAFETY WARNINGS

• Do not operate your EWP® dry as seal damage may occur, and your warranty may be jeopardized.
• Waterless coolants increase the load on an EWP® and may reduce pump life.
• Do not use ‘stop leak’ or similar leak or crack repair additives as pump damage may occur and your warranty will be jeopardized.
• The EWP® must be always full of coolant to achieve the life and performance expectations of your EWP®.
• The EWP® impeller tip clearance has been designed to achieve maximum efficiency and is therefore very close to the housing. When new bedding is in, the impellor may touch the internal wall of the EWP® housing causing a slight noise. This sound will cease within a very short time after the impeller has bedded in.
• The installation of an EWP® may affect coolant flow through auxiliary coolant loops. This change in flow may affect the performance of auxiliary systems like the heater, LPG converter, and Turbo cooling. In these cases, you may require an Electric Booster Pump (EBP) to provide constant flow to these systems.
• DO NOT ATTEMPT to tamper with the EWP including loosening or removing any bolts/screws as this will void any warranty. If you suspect there is a fault or defective product please contact Davies, Craig IMMEDIATELY.

WARRANTY

Davies, Craig Pty Ltd warrants for three years or 2000 hours of continuous running (whichever is the lesser) from the date of purchase. Davies, Craig shall carry out, free of cost, any repairs that are reasonably necessary to correct any fault in the operation of your Davies, Craig product provided that such a fault is directly attributable to a defect in the workmanship or materials used in the manufacture of the part(s). This warranty is void if the product is misused, altered, tampered with, or is installed or used in a manner that is inconsistent with Davies, Craig’s written recommendations and/or installation instructions. Labor and consequential costs are excluded. DAVIES, CRAIG PTY. LTD.
To make a warranty claim, go to: daviescraig.com.au/warranty.

• 61-67 Taras Av (P.O. Box 363) Altona Nth, Vic 3025 Australia
• Phone: +61(0)3 9369 1234
• info@daviescraig.com.au.
• daviescraig.com.au.

References

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

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