maintenance
1. Check oil level, exhaust temperature and exhaust pressure every day, and check whether there is abnormal sound;
2. Open the drain valve of the separator to discharge condensed water before starting the machine every week, check whether there is leakage everywhere, check the safety valve, and check the wear of the belt (visual measurement);
3. Check the inlet control valve, minimum pressure valve, electric control box terminal, safety valve and cooling fan regularly;