User and Service manual JO960
Ver. 2.0
Ver. 1.1
9
Water tank/ refilling
When shipped the water tank (see 1 on Figure 2) is filled with approx. 40
litres of water with a mixture of water and Ethylenglycol to prevent
freezing. The cooling liquid must have a freezing point below -15ºC (5ºF).
Check regularly that the water level is above the hole for the return
water, which can be found on the side of the water tank. Use a glycol
dilution with the correct freezing point when the water tank is being filled.
The most commonly sold marks of glycol for vehicles can be used in
JO960. The most commonly used is Ethylenglycol but also
Polypropylenglycol.
Remark: Different kinds of glycol should not be mixed, as it then loses
its characteristics and the freezing point can no longer be
controlled. If Ethylenglycol is not available the water tank must
be emptied completely before it is refilled.
Setting of the temperature of the cooling water
To secure that JO960 works satisfactorily, the temperature of the
cooling water must be set correctly. Factors, that will influence this
setting is.
•
The time and frequency when the machine is used for heating.
•
The ambient temperatures when running the machine.
•
Air cirulation inside the machine.
The thermostat is used for setting the temperature in the cooling unit
(See 3 on Figure 2). There are two types of thermostats. One, that is
preset to 15 degrees, need not to be adjusted under normal working
conditions. The other kind of thermostat, that is adjustable, could be set
to 0 under normal working condition.
When the temperature is lowered it might cause condence to form on the
control unit due to the air humidity of the surroundings.
