Product Manual A

Maintenance
31609 A MTP4000-6000DZV/DZD Operating Manual 69
8. Ensure all bare metal areas are coated with a rust preventative.
9. Inspect unit every four weeks and replace drying agents (Silica Gel) as required, or a minimum of every six
months.
10. Keep an inspection record showing dates of inspection with any maintenance performed and condition of
drying agents (Silica Gel).
11. Before use ensure that all rust protection has been removed. Also, remove any foreign material that may
have accumulated during storage.
12. Before use remove all drying agents (Silica Gel).
13. Drain all water from the main pump piping, including the suction line and discharge line. Remove the volute
drain plug and vent plug to empty the pump casing.
14. Verify correct oil level in the engine and seal oil reservoir. Add oil as necessary.
15. Add grease to the main pump bearing frame fittings. Three to six strokes at each fitting with a hand grease
gun should be sufficient.
16. Jog the main pump motor for 10 to 15 seconds. Replace all plugs removed for draining.
WINTER STORAGE
Occasional motor starts once every month are recommended. Run the unit until it reaches operating temperature.
This will help to replace and maintain a lubricating film on the bearings and operating parts.
Restart Preparation
In installations where winter shutdown and storage is the normal situation, it is recommended that lubricating oil and
seal barrier oil be drained and replaced to correct levels before the beginning of each new season.
• Add fresh grease to the main bearing frame and vacuum pump pedestal fittings
• Check all gasketed flanges, especially those on the suction side of the pump, for bolt tightness to eliminate
the effect of air leaks on the priming time.