GEA F Series Assembly Instructions Manual

Contents

GEA F Series Assembly Instructions Manual Manual pdf 19 page image

DGBFE1909702-09.2013-DGbF6| CommissioningCAUTION! Wear personal protective clothing such as goggles andprotective gloves!Make sure that the suction and discharge line valves are open.With the compressor switched off, add the liquid refrigerant directly to the condenser or receiver,breaking the vacuum.If the refrigerant needs topping up after starting the compressor, it can be topped up in vapourform on the suction side, or, taking suitable precautions, also in liquid form at the inlet to theevaporator.6.5 Refrigerant chargeATTENTION! Avoid overfilling the system with refrigerant!To avoid shifts in concentration, zeotropic refrigerant blendsmust always only be filled into the refrigerating plant in liquidform.Do not pour liquid coolant through the suction line valve onthe compressor.It is not permissible to mix additives with the oil and refrigerant.6.6 Shaft sealATTENTION! Failure to observe the following instructions can cause loss ofrefrigerant and damage to the shaft seal!INFO! The shaft seal seals and lubricates with oil. An oil leakage of0.05 ml per operating hour is therefore normal. This appliesparticularly during the run-in phase (200 - 300 h).The compressor types F14 and F16 are equipped with a leak oildrain hose (see chapter 10 and 11). The leak oil is continuallydischarged through the leak oil drain hose. To collect the leak oil,a receptacle is to be provided by the plant operator. Dispose ofthe leak oil in accordance with the valid national regulations.The compressor shaft is sealed to outside using a shaft seal. The sealing element rotates with theshaft.The following is especially important to ensuring fault-free operation:The complete refrigerant circuit must be correctly executed and clean inside.Heavy shocks and vibrations to the shaft as well as continuous cyclic operation are to be avoided.The sealing surfaces can stick together during prolonged downtimes (e.g. winter). Therefore, runthe system every 4 weeks for 10 minutes.