12. OPERATION 12.1.2 CHECK BEFORE STARTING WARNING Be sure to put a warning tag on work equipment control levers 1 . Always carry out the items in this section before starting the engine each day. CHECK MONITOR PANEL 1. Turn the starting switch to ON. 2. Check that all the monitor lamps, the gauges and the warning lamp light up for about 3 seconds and the alarm buzzer sounds for about 1 second. If any monitor lamp does not light up, ask your Komatsu distribu- tor to inspect that monitor lamp. Do not carry out the checks before starting using only the monitor; always carry out also the items specified for the periodic maintenance.
CHECK COOLANT LEVEL, ADD WATER WARNING Do not remove the cap while cooling water is hot. Hot water may spout out. When removing the radiator cap, lift the lever to relieve the internal pressure. CAUTION When adding water, use the step and handrail to support yourself securely. 1. When the starting switch is turned on, if the coolant warning lamp and monitor lamp flash, remove radiator cap 1 at the rear of the machine and check that the coolant is above the hatched portion marked in the diagram on the right. If the coolant level is low, add more water. 2. After adding water, tighten the cap securely. If the volume of coolant added is more than usual, check for possible water leakage.
Confirm that there is no oil in the coolant. 2-37