Abang Nasir, peronda, brings me to fire fighting pump house to check the availability of the pump. He explained that if pressure is less than 9 bar, jockey pump is activated while less than 7 bar, electric pump is on. Diesel pump 1 will activate when pressure less than 5 bar and diesel 2 will activate when pressure less than 4 bar.
The procedure of doing the checking is opened the bypass valve to let the water flowing back to water tank. Then manually turn on the electric pump, follow by diesel 1 pump and diesel 2 pump.