72 HyPrecision 50S/60S/75S Operator Manual 808690
5 – Preventive maintenance
Preventive maintenance
Preventive maintenance schedule
These maintenance intervals are general guidelines. The top left of the operator interface screen shows the total 
hours the pump has been in operation.
Repair or replace parts identified in the preventive maintenance schedule or if the parts show 
deterioration, corrosion, or damage.
Every 
work 
shift
Every 
40 
hours
Every 
500 
hours
Every 
1,000 
hours
Every 
1,500 
hours
Every 
3,000 
hours
General (page 75)
Examine the equipment for leaks or damage
page 75
Electrical system (page 76)
Make sure that the emergency stop button works
page 76
Examine cords and plugs for deterioration or 
damage
page 76
Hydraulic system (page 77)
Check the hydraulic fluid indicator
page 77
Check the hydraulic fluid level
page 78
Check the hydraulic fluid quality
page 80
Measure the hydraulic fluid temperature
page 81
Replace the hydraulic filter
page 83
Replace the hydraulic fluid, the hydraulic filter, the 
filler-breather cap, and the suction strainers
page 84
Low-pressure water system (page 88)
Check the low-pressure water pressure gauges
page 88
Measure the air pressure in the water accumulator 
tank
page 89
Replace the water filters
page 91
Test the low-pressure water TDS level
page 94