Schego Ws3 Coil 240v/50hz

Description

Schego Ws3 Coil 240v/50hz — Mains drive coil for the Schego WS3 high-pressure air pump

A decorative water column or protein skimmer fed by a WS3 depends on that pump running all day against the weight of the water. Schego Ws3 Coil 240v/50hz (SKU: SH931) is the replacement coil for the Schego WS3 air pump, rated 240 V and 50 Hz. The coil is the electromagnet in the pump’s drive: it makes the magnet arm swing, and the arm drives the diaphragm. Schego describes the WS3 as developed for special applications such as water decorative columns or protein skimmers, where it offers a higher pressure than the standard models, at least 3 m of water column.

Schego’s data for the WS3 gives an air output of 350 L/h and a power of 5 W, with air regulation, a 1 m cable and a case of about 170 × 75 × 60 mm (a retailer gives 160 × 75 × 60 mm). It is listed as Schego item 930; the coil here is the pump’s mains drive part and is listed separately from the M2K3 coil (SH741). A failed coil leaves the pump silent and still, with no air at the outlet, while a pump that runs but delivers little is more likely to need a diaphragm (SH742), chamber kit (SH743), gaskets (SH746) or arm (SH745). The coil carries mains voltage, so the pump must stay unplugged during the repair and the work suits someone used to appliance servicing. The maker does not publish winding or resistance data, and the pump’s own label should be checked for the 240 V rating before fitting.

Usage & Application

When to Use

• Silent WS3: The pump is powered but makes no sound and no air.
• Skimmer feed pumps: A dead air supply to a skimmer needs a quick, low-cost repair.
• Water-column displays: Decorative columns that depend on the WS3’s pressure.
• Sound mechanical parts: The diaphragm, arm and chamber are in good order, so only the drive is at fault.

Installation & Replacement Guide

• Disconnect the pump: Remove the plug from the socket and take off the air line.
• Open the housing: Remove the cover and the head to reach the coil.
• Fit the new coil: Take out the old coil and install the new one in the same position and orientation.
• Test it closed: Reassemble the case before plugging in, then check the pump runs and delivers air.

Product Specifications & Highlights

Key Features

• WS3-specific: Listed for the high-pressure WS3, not the M2K3.
• 240 V / 50 Hz: Mains rating in the product name.
• Drive part: Energises the magnet arm that pumps the air.
• High-pressure pump: Keeps a WS3 delivering to 3 m of water column.
• Repair, not replace: Restores a pump with otherwise sound parts.

Product Details

• Brand: Schego (Schemel & Goetz, Germany)
• SKU: SH931
• Barcode (GTIN/EAN): 4005256009315
• Product Type: Spare Parts > Air Pump Coil
• Voltage: 240 V, 50 Hz
• Fits: Schego WS3 air pump (Schego item 930)
• Pump Output: 350 L/h, 5 W, at least 3 m water column (Schego)
• Companion Parts: Diaphragm set (SH742); chamber kit (SH743); gaskets (SH746); reed arm (SH745)
• Target Environment: Freshwater and marine aquariums, water columns and skimmers driven by a Schego WS3 pump