Below you will find the most frequently asked questions/problems and their solutions. You can click on the most popular FAQs or on the topic relevant to you. If you don't find an answer to your issue here, please get in touch with Customer Service team.
o the internal pressure switch was upgraded from 35 to 80 bar and is therefore now also suitable for heat pumps. o apart from the R134a, R22, R404A, R407C and the R410A low pressure manometer the ROKLIMA MULTI 4F also has a R410A high pressure manometer.
The data for suction speed is only comparable if the AHRI is certified and tested. If not then every manufacturer can use his own test producing totally different results!
The RO-LEAK is used to locate refrigerant leakages.
Removing of refrigerant from refrigerant circuits, ideal for large systems
Suctioning out of refrigerant from refrigerant circuits, ideal for large systems
The data for suction speed is only comparable if the AHRI is certified and tested. If not then every manufacturer can use his own test producing totally different results!
Tightening down flare connections with torque.
No. Evacuation requires only that you press the “V” function key. The ROKLIMA® is then evacuated based on the preconfigured time, and the evacuation is completed by performing a 2 minutes tightness test.
The scale should be zeroed after it is removed from the ROKLIMA® casing and placed on a level surface. After zeroing the scale, the coolant bottle (for 1 L or 2.5 L bottles together with the bottle connection) is placed on the load cell.
Remove the scale from the ROKLIMA® casing and place it on a level surface. Now confirm by pressing the “minus” and “R” buttons simultaneously. “Tare” appears on the display. Confirm the taring by pressing the “C” function key. The scale has now been zeroed. The display shows “0.000”.
Yes. Before evacuating the coolant lines, attach the capillary hose to the T-piece of the ROKLIMA®, open the ball cock and press the “V” button. After a brief period (approx. 30 seconds), the capillary hose is fully evacuated. Close the ball cock and remove the capillary hose from the T-piece. You can now connect the capillary hose with the coolant bottle (or with the bottle coupling when using 1 L or 2.5 L coolant bottles
No, because the coolant circuit has already been evacuated and you would then simply be allowing the coolant you already filled to evaporate, which would require you to add the quantity of coolant you added previously. Hold down the “C” function key to enter the desired quantity of additional coolant required for filling (with “plus” and “minus”). Confirm the selected value by pressing “C”. Then press “C” again to fill the coolant circuit with the additional quantity of coolant.
No, because at some point the pressure in the coolant line of the air conditioner will exceed the pressure in the bottle, which prevents any more coolant from flowing.
Heating up the coolant bottle increases the pressure inside the bottle. Heat sleeves are available for this purpose, but you can also use a conventional hot air blower or hair dryer. As an illustration, take the following example: bottle pressure at room temperature (20° C) = 40 bar; bottle pressure at 30° C = approx. 53 bar. The following steps can be performed as an alternative: Connect only one filling hose to the service valve of the suction side of the air conditioner. Switch on the air conditioner and suction the desired quantity of coolant into the coolant circuit. Use a scale to ensure the correct quantity.
When the liquid coolant flows out of a highly pressurised bottle, the coolant evaporates immediately. This occurs directly behind the capillary hose when flowing into the filling hose of the ROKLIMA® as well as when using conventional for flowing out of the capillary hose into the mounting aid. This ensures that the coolant circuit is filled only with gaseous coolant.
The coolant circuit is under pressure, i.e. the user is attempting to evacuate a pressurized system. The pressure sensor inside the ROKLIMA® detects this and prevents the vacuum pressure from starting. Follow these steps: Make sure that coolant circuit is not under pressure. This may require restoring the coolant circuit to its delivery state, i.e. draining all coolant back into the external unit. Please follow the operating instructions provided by the device manufacturer when performing this procedure. The pressure in the lines being evacuated can then be released, for example, using the service valve of the air conditioner and you can proceed with the steps for evacuating the system.
