Maintenance
en
Installation and operating instructions Wilo-SiFire FIRST
29
DANGER
Danger from automatic start-up!
Before carrying out any work on the diesel motor it is advisable to disconnect the
positive battery terminal to prevent undesired starting.
DANGER
Risk of injury from hot and pressurised operating fluids!
Before changing the motor oil make sure that the temperature is below 60 °C. In the
case of water-cooled motors, remove the radiator or heat exchanger cover very
slowly. Refrigeration systems are generally under pressure and a violent spillage of
hot liquid can occur. Check that the motor fluid level (oil/water) is correct and that
the water and oil circuit plugs are tightened correctly. DO NOT TOP UP THE
COOLANT IN AN OVERHEATED MOTOR. ALLOW IT TO COOL DOWN FIRST. In the
case of diesel motors with a water/water heat exchanger, check that the cooling
system valves are locked in the open position. Check the oil and diesel fuel hoses
and ensure that there are no fluid leaks.
WARNING
Personal injury due to a lack of protective equipment!
Personnel must always wear personal protective equipment. Maintenance must be
performed ONLY by qualified personnel. In case of lack of instructions, always con-
tact the supplier or qualified personnel. Never perform work alone that requires the
presence of more than one person.
WARNING
Injuries due to sparking at the battery terminal!
Sparks may be generated when connecting or disconnecting the battery. Never con-
nect or disconnect the battery while the motor is running.
WARNING
Injuries due to burns!
On the hot surfaces of the diesel motor and exhaust pipe.
WARNING
Risk of fire or explosion!
Potentially explosive gases can form while charging the diesel pump batteries. Avoid
flames and sparks.
Never leave flammable liquids or acid-soaked rags near the water pressurization
system or electrical equipment. Ensure proper ventilation of the room and fuel tank.
CAUTION
Material damage due to the system not being switched off!
The hydraulic pressure-boosting system does NOT have an emergency stop. The
main pumps can only be stopped manually by deactivating the switchgear.
FOR THIS REASON, BEFORE WORKING ON THE PUMPS, MAKE SURE THAT YOU ARE
IN POSSESSION OF THE CONTROL KEY OF THE CIRCUIT BREAKERS OR (IF PRESENT)
OF THE MANUAL SWITCHES.
Open the main switch in the switchgear of the respective pump.
