Users Manual

Page 29
5. Maintenance and servicing procedures
Routine maintenance
WARNING: Maintenance of a Quattro should only be carried out by a qualified person.
Electrically isolate the machine before undertaking any routine maintenance.
Industrial gloves must be worn when working on or rotating the impeller by hand
Daily
• Run the machine under “no load” conditions to clear any residue.
Monthly
• Lid spray- remove any scale and replace.
• Check that the lid micro-switch and solenoid latch operate.
• Check for leakage from the pulveriser and water pump seals.
Quarterly
Water supply and drainage
• Check for leakage from the pulveriser or water pump seals.
• Check for leaks cold water supply pipe-work.
• Check that the machine is draining correctly.
• Check that the drain block pressure switch tube is clear of water.
• Check and clean solenoid filter or replace.
Mechanical
• Check wear on the hopper cutter ring/impeller.
• Check that the impeller is rotating freely and for absence of vibration.
• Inspect and tighten nuts and bolts as necessary.
• Check the condition of the lid/hopper seal, and that the lid opening gas spring operates correctly.
• Check the lid latch arrangement. Turn isolator off during an empty cycle to simulate a power loss and
ensure that the solenoid has secured the latch in the locked position.
Electrical
• Check contactor is operating correctly in control gear.
• Check overload units operating and set correctly.
• Check lid positive break interlock switch operates correctly.
• Check electrical connections in control gear and motor terminal box are secure.
• Low water sensor and drain/hopper block pressure switch operate
• Functionally test the machine.