Interval Maintenance work
monthly Inspection the drain tap for leaks by visual inspection from the outside
Inspection of the external hoses for material fatigue and leaks
Inspection of the hose clips for correct and secure fit
Inspection of the low level safety function (only for devices with heater)
Cleaning of the condenser (only for air-cooled devices)
Cleaning of the water filter (only for water-cooled devices)
quarterly Decalcifying of the cooling water circuit (only for water-cooled devices)
A shorter interval must be selected, depending on water hardness and operating time
half-yearly Inspection of the heat transfer liquid
7.3 Cleaning the device
Personnel:
n
Operating personnel
WARNING!
Risk of cleaning agent entering the device
Electric shock
Only use a slightly damp cloth for cleaning.
Also note the following:
n Only clean the control panel with water and detergent. Do not use
acetone or solvents. The consequence would be permanently damage of
the plastic surfaces.
7.4 Checking the low-level protection
An alarm signal sounds if the liquid level decreases to the extent that the
heater is no longer completely covered with liquid. Low Level is shown in the
display. The components of the device, cooling unit, heater and pump are
switched o via the electronics system.
An alarm must sound as soon as the minimum level is reached.
The liquid level in the device is shown in the display.
1. Switch on the device. Set the set temperature to room temperature.
2. Lower the liquid level in the device. Drain heat transfer liquid via the
drain tap for this purpose.
The display shows that the heat transfer liquid is sinking.
The device switches o if the liquid level is too low. The message
Low Level appears in the display.
V08
Variocool 69 / 97
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