Section 3c
OPERATION (cont’d)
Additional notes:
a)
For proper sanitation, spa must be completely drained periodically. The number of days between COMPLETE SPA
DRAINAGE is equal to the volume of spa water in liters, divided by 10 times the maximum number of daily spa
users.
b)
Maximum spa usage temperature is 40°C (104°F). Duration in spa water at 40°C should not exceed 15 minutes.
c)
Heavy use of the spa (excessive contamination) may require longer recovery times (A return to a minimum of 3 ppm
chlorine/bromine). Recovery time may be reduced by adding a shock compound to the water.
d)
Hot weather, heavy pool usage, and rain may require a higher output to maintain proper sanitizer residual.
Section 4a
–SERVICE and MAINTENANCE
CONTROL BOX
There are very few serviceable parts on the Commander III Model JC7 Control Box except the fuses. For any other problems
with the Control Box, please contact your representative or Authorized Dealer/Service Center.
To remove the Control Box Cover and access the fuses, follow these steps.
DANGER: TURN OFF THE AC POWER FROM THE CIRCUIT BREAKER OR PANEL BEFORE SERVICING
THIS UNIT.
COMMANDER III
f
Digital
Control Circuit Board
F3
F2
Front of Unit
’Wire Harness Connection
Inner
Metal
Top Cover
Inside Top Cover
Cover
F1
Loosen (4) knobs
Lift off cover and disconnect
Remove (3) screws and
Access is gained to
(you do not need to)
wire harness (Control Circuit
lift off metal cover.
electrical connections
(remove these).
board removes with cover).
and fuses.
Fuse Location and Ratings
F1
Main AC Power Fuse
6 Amps 250 VAC
F2
Control Panel Circuit Board Fuse
3 Amps 250 VAC
F3
Cell Fuse
10 Amps 250 VAC
TRI-SENSOR ASSEMBLY
The Tri-sensor assembly tests for Flow, Salt and Water temperatures. A minimum flow rate of 94.5 L/min. (25 US
Gallons/min.) is required to activate the flow switch. As the water flow closes the paddle, a magnet activates a micro switch to
verify proper flow. The Salt sensor protects against low salt levels and the temperature sensor protects against cold water
temperatures. Both of which can contribute to accelerated cell failure.
Remove the Tri-Sensor as follows (with pump off):
Remove both screws from the side of the Tee Assembly. Firmly grip
he Tri-Sensor assembly and twist to loosen the compression o-ring.
With the aid of large Channel-lok® (or similar) pliers, twist
back and forth while removing the Tri-Sensor from the tee.
directional
Inspect the thin metalic paddle for erosion and straightness.
arrow
screw(s)
Take care not to twist or tweek this paddle, which can cause
one on each side
inaccurate flow readings. Inspect the salt sensor blades for scale
and debris and clean if necessary. See page 12 for cleaning
instructions. Follow the directions for Manual Cell Cleaning.
Check the tri-sensor assembly for any damage to the plastic
housing and replace if needed.
12
