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CHAPTER 4
ELECTRIC CONNECTION
WARNING
Ensure tension and frequency of pump (read motor plate) and supply network are same.
DANGER - ELECTRIC SHOCK RISK
Installer must make sure that electric current network has ground wire conforming
to current laws.
DANGER - ELECTRIC SHOCK RISK
Make sure that electric current network is provided with a high-sensitivity circuit-
breaker ∆=30 mA (DIN VDE 0100T739)
SINGLE PHASE VERSION
Single phase pumps are equipped with double ground contact plugs at top end of supply cord ; in this
case grounding is done when plugging in.
THREE PHASE VERSION
In this case the ground wire ( yellow-green cable ) of supply cord must be connected to ground wire
of electric current network. Ensure connection to electric current network by using an omnipolar-
sectionned magneto thermic circuit-breaker.
This will ensure effective disconnection from electric current network.
OVERLOAD PROTECTION
DRENOX range pumps have a built-in thermal overload with automatic reset. Further protections
are not required. DRENOX range three phase pumps can be protected by using a magneto-thermic
motor protector or a contactor with thermal relay; in both cases they have to be rated conforming to
nominal power showed on motor plate. Eventual electric float switch must be connected to auxiliary
connector buckles.
ROTATION DIRECTION TESTING THREE PHASE PUMPS
Water head and delivery are terribly effected by wrong rotation of shaft of pump motor. Clock wise
rotation is correct ( upside view of pump ). When starting the pump, motor will ungergo an anti-clock
wise back-kick. In this case test is positive; on contrary case, please disconnect pump from network
and inverse two phases.
CONNECTIONS DIAGRAM (SEE DIAGRAMS PICT.2)
• A. Single phase manual pump
• 1. START (green)
• 2. RUN (red)
• 3. COMMON (black)
• 4. CAPACITOR
10
• B. Single phase automatic
pump
• 5. SUPPLY CORD
• 6. GROMMET
• 7. PLUG
• 8. YELLOW-GREEN
• C. Three phase pump
• 9. WHITE
• 10. LIGHT BLUE <LINE>
• 11. BROWN <LINE>
• 12. FLOAT SWITCH
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