Placement Checks
Before starting the SN Spray Unit a few checks need to be done to confirm the placement is correct.
Placement Check
Check
Is the SN Spray Unit properly tethered? (Assembly)
Is the cord ran through the cord seal and cord seal tightened at the interior of the cord fixture? (Assembly)
Is the top splice between submersible cable conductors and exterior electric conductors insulated from each
other and individually sealed to protect from corrosion? (Assembly)
Is the control panel wired correctly? (Control Panel Diagram)
Is the SN Spray Unit submerged within the minimum water depth required? (Technical Specifications)
Is the Motor rotating the correct direction? (See Rotation Check below)
Check
Reading
Single Phase
Three Phase
Continuity Check (Motor Wi Wire)
Reference Wiring for Line to Line Ohms
L1:L2
L1:L2
L2:L3
L1:L3
Discontinuity Check (Power to Ground)
Should be Open to Ground
L1: GND
L1: GND
L2:GND
L3:GND
Source Voltage Reading (while unit is running)
L1:2
L1:2
L2:L3
L1:L3
Amperage Reading (while unit is running)
Reference Wiring Full Load / Max Load
L1
L1
L2
L3
Flow Check Auditory
Flow Check Visual
Final Checks
Now that the install checks have been completed. Now to confirm the continuity and discontinuity and then
start the SN Spray Unit.
Rotation Check
-
(Three Phase Only)
Before finalizing the placement, the motor rotation needs to
be checked. With someone observing the SN Spray Unit,
briefly turn the unit on for several seconds and observe the
flow pattern, look for how far out the spray reaches. Turn unit
off, isolate power, and have a qualified person switch 2 of the
3 motor leads of outgoing power. Repeat operation again for
several seconds and observe the SN Spray Unit flow pattern
again. Determine which wiring configuration produced the
flow pattern that reaches out the furthest and finalize with that
wiring of the outgoing power leads. See Figure 1 for proper
flow direction.
Figure 1:
Flow Check
REVERSE
FWD
FWD
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Startup and Operation
SN Startup and Operation
Wiring
10103_20200221
O&M_SN10_10030_10104_20201006 - 8
