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Overload protection
Tripping of the overload relay may be caused by short-circuited capacitor,
voltage supply problems, overloaded or locked pump or that the starting
relay needs to be replaced.
Reset the overload relay and make analysis to establish the tripping cause.
Remedy the cause of tripping and reset overload relay again.
4. Product introduction
SA CSIR, capacitor start induction run, and SA CSCR, capacitor start
capacitor run, are Grundfos control boxes for controlling Grundfos single-
phase, 3-wire submersible motors.
4.1 Approvals and marks
The control boxes have the following approvals, and the marks of approval
appear from the label on the front cover.
5. Servicing the product
Service must be performed by a qualified service engineer who is familiar
with local regulations.
Do not remove or leave out the overload protection as this may
lead to motor burnout.
