Lochinvar PS1000 User Manual
15
10
Faults, causes and
rectification
Pump doesn’t run when power is
switched on :
■ Check solar control unit for correct settings and tight wire
connections.
connections.
■ Check fuses.
■ Check pump voltage, refer to the pump rating plate for
requirements.
requirements.
■ Close shut-off instruments upstream and downstream of
pump at high liquid temperatures and system pressures.
Allow pump to cool first.
pump at high liquid temperatures and system pressures.
Allow pump to cool first.
■ Fully unscrew bleed screw and check ease of movement of
pump rotor by turning the slotted shaft end with a
screwdriver; use force to turn if necessary.
pump rotor by turning the slotted shaft end with a
screwdriver; use force to turn if necessary.
Motor blocked:
■ In the event of cavitation caused by insufficient inlet
pressure, increase primary system pressure within allowable
range.
pressure, increase primary system pressure within allowable
range.
■ Check speed setting.
Pump Noise:
If the fault cannot be rectified, please contact your nearest
Lochinvar/TiSUN customer service representative.
Lochinvar/TiSUN customer service representative.
SL-PS Installation & Operation Manual