1. Worker must be familiar with the general knowledge of vacuum pump, heater and oil pump etc.
2. After run for a long time, when the vacuum pump oil has much water to be emulsification situation, please change the new vacuum pump oil (1# vacuum pump oil or relevant engine oil instead)
3. if the inlet oil quality become less, the reason is that inlet filter (primary filter) and pipe is jammed or oil pipe leakage. Under this situation, open each exhaust / drainage valves to let out waste oil and water, then clean the filter and pipe.
4. The vacuum pump’s cooling liquid needs to change when it is dirty.