Schego Prima Coil 240v/50hz

Description

Schego Prima Coil 240v/50hz — Replacement drive coil for the Schego Prima 100 L/h air pump

Nano tanks and quarantine tubs are often aerated by a Prima that nobody has opened in years, and when it stops, the coil is the part to suspect. Schego Prima Coil 240v/50hz (SKU: SH733) is the replacement coil for the Schego Prima air pump, listed at 240 V and 50 Hz. In Schego’s parts list for the Prima, the coil is item 733. It is the electromagnet that sets the pump’s metal rocker armature moving, and the armature in turn moves the diaphragm, so a failed coil leaves a pump that is plugged in and silent.

The Prima is rated 220–240 V at 50 Hz and is for indoor use only. Retailer specifications list 110 L/h at no head, 100 L/h at 0.5 m, 3 W and a case of about 116 × 66 × 51 mm. It is sold as a compressor for small aquariums, and the pump body does not include accessories: the air hose, air stone or diffuser and a check valve are bought separately. Schego’s strip-down steps for the pump begin with unplugging, removing the base screws and housing cover, and removing the metal rocker armature; the coil sits in the same housing, and after any rebuild the magnet-to-coil gap should be about 1 mm. Because the coil operates at mains voltage, the pump must be unplugged for the whole repair. If the pump runs but is weak, the diaphragm set (SH731), the pump head kit (SH732) and the filter felt (SH734) are the more likely fixes.

Usage & Application

When to Use

• Silent pump: The Prima is plugged in and powered but makes no sound and no air.
• Sound diaphragm: The membrane looks healthy, so the drive side is the likely fault.
• Small-system pumps: Nano aquariums and tubs that depend on a single Prima.
• Repair culture: Keeps a good case and head in use rather than discarding the whole pump.

Installation & Replacement Guide

• Isolate: Take the plug out of the socket and keep it out until the pump is closed again.
• Open the case: Loosen the base screws and remove the housing cover.
• Exchange the coil: Take out the metal rocker armature, then remove the old coil and fit the new one in the same position.
• Check the gap: Rebuild, leaving about 1 mm between the magnet and the coil, then test the pump.

Product Specifications & Highlights

Key Features

• Item 733: The coil listed in Schego’s Prima spare parts list.
• 240 V / 50 Hz: The mains rating given in the product name.
• Drive part: The electromagnet that moves the rocker armature.
• Prima-only: Listed for the Prima; other Schego models have their own coils.
• Quiet, low-power pump: The Prima draws 3 W, according to retailer specifications.

Product Details

• Brand: Schego (Schemel & Goetz, Germany)
• SKU: SH733
• Barcode (GTIN/EAN): 4005256007335
• Product Type: Spare Parts > Air Pump Coil
• Schego Item: 733
• Voltage: 240 V, 50 Hz
• Fits: Schego Prima 100 L/h air pump
• Not Included: Air hose, diffuser and check valve are sold separately
• Companion Parts: Diaphragm set (SH731); pump head kit (SH732); air filter felt (SH734)
• Target Environment: Small freshwater and marine aquariums aerated by a Schego Prima pump