Clarke Fire Pump Diesel Engine JU6H-UF62

NOTE: The following Routine Maintenance schedule is based on an engine usage rate not exceeding 2 hours per month. For UL/FM engine models, also refer to NFPA25

• Set main pump controller to “OFF” while servicing engine. Before turning the main pump controller to the "OFF" position, check with the maintenance and security supervisors to verify that all the departments concerned will be alerted of the temporary interruption of their fire protection equipment for normal maintenance or testing

• Also, alert the local fire department in the event that the main pump controller is connected by silent alarm to headquarters

Start the engine by following the “To Start Engine” Procedure in this manual

Loosen the jam nut(s) (Figure #38)

Enter the RPM reading from the instrument panel

Rotate the long adjustor clockwise to lower the RPM and counter clockwise to raise the RPM’s until desired speed is obtained. Ref. Figure #38

Holding secure the long adjustor with a wrench tighten the jam nut

Stop engine by following “To Stop Engine” Procedure in this manual

Sign off on the engine speed adjustment

NOTE: The following Routine Maintenance schedule is based on an engine usage rate not exceeding 2 hours per month. For UL/FM engine models, also refer to NFPA25

Set main pump controller to “OFF” while servicing engine. Before turning the main pump controller to the OFF" position

Also, alert the local fire department in the event that the main pump controller is connected by silent alarm to headquarters

When servicing is complete, return main pump controller selector to Automatic" position and the mode selector on the engine to “Automatic” position. Advise the appropriate personnel the engine has been returned to the “Automatic”"

Sign off on the engine maintenance

Warning: Ensure the engine is warm before starting the procedure

Sump drain plug removed and lubricating oil drained

Tighten the drain plug to 34 Nm (25lbf-ft) / 3.5 kgf-m

Sump filled to the ‘FULL” mark on the dipstick with new and clean lubricating oil of an approved grade

Unit returned back into service by returning the AEC selector to “automatic” position and the manual operating lever to manual stop position

IMPORTANT! Set main pump controller to “OFF” while servicing engine.

Main pump controller set to “OFF”

NOTE: The following Routine Maintenance schedule is based on an engine usage rate not exceeding 2 hours per month. For UL/FM engine models, also refer to NFPA25