MAKINEX DPC-2200, Operator'S Manual

Page: 33 / 41

DPC-2200 USER MANUAL Page 30 of 38
TROUBLESHOOTING
PROBLEM CAUSE REMEDY
Pump does not
reach the
specified
pressures
Pump sucking air
Restore the tightness of the
intake line
Intake flow rate insufficient
Increase the size of the intake
pipelines
Remove and kinks from the pipes
Increase the filter capacity or
clean the filter cartridge
Increase the RPM to the rated
speed
Worn intake and delivery valves Replace the valves (1)
By-pass valve seat worn Replace the valve
Worn gaskets Replace the gaskets (1)
Unsuitable, worn nozzle Replace nozzle
Faulty Gauge Check and Replace
Irregular
variations in
pressure
Worn intake and delivery valves Replace the valves (1)
Valves blocked by dirt Clean the valves (1)
Air being sucked into system
Restore the tightness of the
intake pipeline connections
Worn gaskets Replace the gaskets (1)
Fluctuating
pressure
Valves worn Check and replace
Valves blocked Check and replace
Pump sucking air
Check water supply and air
ingress at joints in suction line
Worn piston packing Check and replace
Pressure drop
Nozzle worn Replace Nozzle
Worn intake and delivery valves Replace the valves (1)
Valves blocked by dirt Clean the valves (1)
By-pass valve seat worn Replace the valve
Worn gaskets Replace the gaskets (1)
Pump noisy
Air being sucked into system
Restore the tightness of the
intake pipeline connections
intake and/or delivery valve
springs broken or collapsed
Replace the valves (1)
Valves blocked by dirt Clean the valves (1)
Worn bearings Replace the bearings (1)
Intake liquid temperature too high Reduce liquid temperature
Pump overheating
High pump operating pressure
Reduce the pressure to the rated
values
Not enough water flowing through Check water inflow through pump
Pump left on idle for too long
DO NOT LEAVE PUMP ON IDLE
FOR >2min VOIDS WARRANTY
Water in oil
Guide piston gasket worn Replace the gaskets (1)
High humidity percentage in air Change the oil twice as often