P/No:0950
3
The Mechanical Thermatic Switch, Combo
The Mechanical Thermatic Switch, Part #0404
Part #0400
WARNING
:
Do not use the vehicle’s engine management system or wiring connected to the management
system as an ignition source as it may cause failure of the management system and/or the electrical system.
The ignition source must be a steady positive supply of 12 or 24V DC.
If in doubt about any aspect of these instructions consult your retailer or Davies, Craig P/L direct on:
(03) 9369-1234 or e-mail
IMPORTANT NOTES
Four Wheel Drives
- monitor engine temperature closely when using off-road at low forward speeds in hot weather. If
you wish, supplement cooling with the Davies, Craig EWP – Electric Water Pumps.
Towing
of heavy boats and caravans can cause overheating. Thermatic fans can help to solve this, particularly if
mounted in front of the radiator and, if necessary, used in conjunction with the standard belt driven fan, or an EWP.
Air-conditioned vehicles
normally require a condenser fan in conjunction with the standard belt driven fan.
It is possible to eliminate the belt driven fan all together by using a combination of Thermatic Fans suitable to your
vehicle, as set out on the ‘Model Selection Guide’, with an air-conditioner condenser fan. This will give you all the benefits
of electric cooling.
If overheating persists there may not be enough coolant flow. The Davies Craig EWP (Electric Water Pump) will solve the
problem. More details are on our website.
www.daviescraig.com.au
.
TROUBLE SHOOTING
The following notes are designed to help you overcome the most common problems experienced by customers with
Thermatic fans:
1.
FAN RUNS NORMALLY BUT ENGINE OVERHEATS, CHECK:
a. Correct model is fitted
b. Thermal Switch is set correctly
c. Fan blade facing the right way and rotating in direction of the arrows and in accordance with chart.
d. Fan/s connected to full 12V power source.
e. Fan too far from face of radiator
f. Other cooling system problems
2.
FAN RUNS WHEN CAR TRAVELLING AT MEDIUM TO HIGH SPEEDS, CHECK:
a. Adjustment of thermal switch
b. Is the vehicle towing?
c. Other cooling system faults
3.
FAN DOES NOT RUN OR RUNS SLOWLY, CHECK:
a. Fuses
b. Adjustment of thermal switch –set too high!
c. Wiring integrity
d. Connect motor(s) directly to battery then trace wiring towards switch if motor(s) runs.
e.
Check earth connections.
