Maintenance

MAINTENANCE

The Cleaner 134a device operates at maximum efficiency while draining a vehicle air conditioning system if its vacuum pump is efficient. For this reason, before using the device, check the level of oil in the pump and whether any impurities are present by carrying out the following operations:

• operate the pump by turning selector lever to position 2. After checking oil level in the indicator window (1) turn ballast (2) to remove any uncondensed gases that could contaminate the oil and cause serious damage to the pump;
• after 5 minutes, check that the oil level visible through indicator window (1) is just over half way along the window and that no impurities are present on its surface;

If no particular defects are found, the equipment - or more specifically the vacuum pump - are ready for use.

Note that when the pump is hot, the oil level must be no higher or lower than the extreme levels shown on the indicator window (1) because in the first case the pump will become clogged with oil and its performance will be impaired and in the second case seizure could occur due to lack of lubrication. Also note that oil level should be checked for a possible top up when the pump is warm.

CHANGING OIL

The first vacuum pump oil change is due afer 100 hours of operation whereas subsequent oil changes must be carried out when the oil is no longer light and clear but greyish in colour.

To replace the oil with the pump hot, proceed as follows:

• unscrew filler (3) and drain (4) plugs and leave oil to drain out fairly quickly, taking all the impurities with it;
• close the drain plug (4) and add 0.45 litres of special oil (viscosity 6° Engler) through plug (3). Check oil reaches the correct level.

Detail of fitting and electrical socket for connecting electronic vacuum gauge

1. Fitting
2. Electrical power point