This document provides user instructions for the Clarke PC40 Phase Converter, a device designed to run 3-phase asynchronous motors from a 230V single-phase supply.

Function Description:

The Clarke PC40 is a phase converter that transforms a single-phase 230V AC input into a 3-phase 400V AC output. It is specifically designed for use with 3-phase asynchronous motors. Due to its operational characteristics, the device is primarily suited for applications where motors run constantly and is not recommended for stop-start operations. The converter allows users to power industrial machinery such as drills, lathes, milling machines, and circular saws in environments where only a single-phase supply is available. It's important to note that these converters are not suitable for high start-up load applications like car hoists, compressors, and vacuum pumps.

Important Technical Specifications:

Dimensions (D x W x H): 365 x 255 x 380 mm
Weight: 19.5 kg
Input Voltage: 230V AC, ~ 50 - 60Hz
Max Input Current: 18 Amps
Input Current Fuse: 20 Amps
Input Cable Size: 1.5 mm (minimum for up to 20 meters)
Output Voltage: 3ph 400VAC
Max Output: 3.5 HP

The converter is designed to supply a 3-phase, 3-line load as standard. If a neutral connection is required, users are advised to contact their dealer or Clarke Service for advice.

Usage Features:

The PC40 Phase Converter features a front panel with an ON/OFF switch (A), an indicator lamp (B) that illuminates when the converter is on, and an ammeter (C) with an adjustment screw to ensure it reads zero before operation. Three switches (G) allow the user to set the output equivalent to the motor's HP, with an indicator lamp (F) illuminating when these switches are set.

Operational Steps:

Before connecting the output plug, ensure all three switches (G) are set to OFF.
Switch the converter ON using the ON/OFF switch (A). The lamp (B) will illuminate.
Check and adjust the ammeter (C) to zero if necessary.
Switch OFF the converter and connect the motor's plug to the output socket (E).
Using the three switches (G), set the output to match the motor's HP as found on its data plate. A chart is provided in the manual for specific switch settings (ON/OFF) for 0.5HP, 1HP, 1.5HP, 2HP, 2.5HP, 3HP, and 3.5HP outputs.
Once the switches are set and the output is plugged in, switch ON the converter and then start the motor/machine. The indicator lamp (F) will illuminate when the switches (G) are set.

Important Usage Notes:

Never adjust the switches (G) when the phase converter is switched ON.
The converter must be connected to the mains via a separate isolator and protected by a fuse or circuit breaker. Standard 13amp plugs are not suitable.
The input cable provided is 2M (minimum) of 3-core cable for connection to the power supply.
For cables longer than 20 meters, refer to current IEE regulations for appropriate cable sizes.
When reversing a motor, ensure it has stopped completely before doing so.
For certain small or unusual motors, a pilot motor may be necessary to balance phases. This pilot motor should generally be a 2-pole (2800 rpm) motor and at least twice the size of the motor being driven.
When using the converter with multi-speed machines, allow the machine to slow down before switching from high to low speeds to prevent damage to the converter and motor from excess motor back E.M.F.

Maintenance Features:

The device includes a thermal overload protection system. Should the unit overheat, the thermal overload will trip, shutting off the supply to the motor/machine. In this event, the user must switch OFF the converter, wait at least 5 minutes for it to cool, and then press the Reset button (D, Fig.2) to restart. It is crucial to investigate and address the cause of overheating to prevent recurrence, consulting a qualified engineer if necessary.

Safety Information:

Always read and comply with all instructions provided in the manual.
Never open or remove any covers while the equipment is connected to the mains.
Never operate the device with panels open or removed.
Never attempt to repair the equipment unless you are a qualified electrician.
Do not use the converter in wet or damp environments.
The user is responsible for resolving any electromagnetic disturbances detected during installation and use.
Always observe Health and Safety and IEE regulations.

Environmental Recycling Policy:

This product falls under WEEE regulations. It must not be disposed of with general household waste but should be disposed of at a recognized disposal facility according to local laws governing Waste Electrical and Electronic Equipment.

Guarantee:

The Clarke PC40 Phase Converter is guaranteed against faulty manufacture for 12 months from the date of purchase. The receipt serves as proof of purchase. The guarantee is void if the product has been abused, tampered with, or not used for its intended purpose. Faulty goods should be returned to the place of purchase, and no product can be returned without prior permission. This guarantee does not affect statutory rights.

Clarke PC40 - Declaration of Conformity

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