Spectra Watermakers CABO 10,000, Installation And Operating Manual

Page: 19 / 25

19
TROUBLESHOOTING
Symptom Cause Resolution
Pump Knocks Loudly Incorrect Boost Pressure
Inadequate Feed Water
Supply
Suction on brine discharge
Increase or Decrease boost
pressure as appropriate
Check Pre-filtration for
blockages
Check Supply Pump for
proper operation and
adequate flow through pre-
filtration system
A vacuum break (air gap) or
a small restriction on the
brine discharge (2-5 psi)
can reduce knocking
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 on VFD Output
terminals (AC Systems
Only)
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