Spectra Watermakers CATALINA 300 MPC-5000, Installation & Owner'S Manual

Page: 43 / 63

43
Feed pump runs constantly,
will not turn off Manual override switches
in “on” position Turn off manual switch on
control box
SYMPTOMS PROBABLE CAUSE REMEDY
Spectra Watermakers w/MPC Troubleshooting Procedures
No lights or display, system
does not operate - Remote display not connected
- No power to control box
- Check display cable connec-
tions at back of display and at
control box
- Check and reset main DC
supply breaker
- Check for voltage (12 or
24vDC) at control box power
input studs
- Try manual bypass switches;
if pumps run, then control or
display is defective
Feed pump runs with loud
noise - Intake blocked
- Air in system - Check thru-hull valve
- Check sea strainer for leaks
- Check FWF module for leaks
- Re-prime system (restart)
Pumps run intermittently,
cycling on/off System operating in flush mode
(DC models) - System will time out, or
manually stop with the Start/
Stop button
Display activates, but pump
will not run - Loose or broken pump wire
connection
- Bad pump relay
- Tanks are full
- Check wiring at terminal
block inside MPC
- Test power relay, replace
- Check tanks– system cannot
be started if tanks are full.
System runs, no product
water delivered to water
tanks, Gph shows OK,
“Good” LED activated - Diversion valve inoperative
wiring fault.
- Disconnected or broken
product tubing
- Diversion valve plunger
- Check wiring at diversion
valve and inside control box
- Check product tubing
- Disassemble and clean diver-
sion valve plunger or replace
valve (contact factory)
System runs, no product
water delivered to water
tanks, GPH bar graph
shows OK, “reject” LED
activated - High salinity of product
water, causing system to
reject water
- Salinity probe out of cali-
bration or defective, bad
cable
- Chlorine damage to mem-
branes
- Pressure relief valve open
- Check for low feed pressure,
close pressure relief valve
- Check for leaks at high pres-
sure hoses
- Test product water with hand-
held tester– if over 500ppm
for 1 hour, contact factory
Close Valve