Spectra Watermakers LB-20000, Installation And Operating Manual

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Symptom Cause Resolution
Pump Knocks Loudly Incorrect Boost Pressure
Inadequate Feed Water Supply Increase or Decrease boost pressure
as appropriate
Check Pre-filtration for blockages
Check Supply Pump for proper op-
eration and adequate flow through
pre-filtration system
Belt Skipping Teeth on Gear-End Belt Too Loose
Motor Turning Wrong Direction Tighten Belt
Run motor in reverse direction by
swapping T1 and T2 out VFD Out-
put terminals.
Permeate Flow Decreasing Permeate Flow Meter Not Calibrated
Worn High Pressure Seals
Worn Damper Piston Seal
Worn Piston Seals
High Membrane Pressure Calibrate permeate flow meter
Replace seals
Replace Damper Piston and Seal
Replace Pistons and Seals
Check membrane pressure against
nominal system parameters.
Recovery Ratio Increasing Worn Pistons
Permeate Flow Meter Not Calibrated Replace Pistons and seals
Calibrate permeate flow meter
High Power Consumption
(Decreased Energy Efficiency) High Membrane Pressure
Low Boost Pressure
Motor Problems
Gear End Problems Check membrane pressure against
nominal system parameters
Check Supply Pump for proper op-
eration and adequate flow through
pre-filtration system
Test motor with a megohmeter, re-
place if necessary
Change oil
Replace Gear-End
Pump Won’t Run Motor Problem
VFD Problem Check VFD for error codes
Check all wiring
Check all wiring
Check VFD for error codes
Troubleshooting Spectra Connect Alarms