CORRECT INSTALLATION OF CARTRIDGE HEATERS


INSTALLATION GUIDE

Guidance

Cartridge heaters must be adjusted as much as possible. When a hole has to be drilled for the housing of the cartridge, the following factors should be noted:

The inside of the drilled hole must be uniform, without gratings, burs or un-even diameters. The hole must be completed  reaming to ensure the best heat transfer.

As the heat rises the distribution is less at the ends and the heat is concentrated in the middle. The connections must never be deeper than the drilled hole, as there is the risk of shorting and the leads burning. The connections must be protected to prevent any possible spilling of fluids and or gases.

The temperature of Cartridge heaters should be regulated using an appropriate temperature control device and should never be installed unregulated.

There must be a minimum space of 3 diameters between each heater.

Ensure that the drilled hole has an outlet as to make removal easier.

Very Important

The cartridges must be adjusted as much as possible. When a hole has to be drilled for the housing of the cartridge, the following factors should be noted: The inside of the drilled hole must be uniform, without gratings or un-even diameters. Finishing off with reaming of the hole is recommended. As the heat rises the distribution is less at the ends and the heat is concentrated in the middle.

The connections must never be inside the drilled hole, as there is the risk of shorting and leads burning. The connection must be protected to prevent possible spilling of fluids and the entry of plastic, gases, etc. The temperature of Cartridge heaters should be regulated using an appropriate temperature control device. There must be a minimum space of 3 diameters between the cartridges. Ensure that the drilled hole has an outlet as to make removal easier.

HOW TO REMOVE A CARTRIDGE HEATER

Once a cartridge heater has been in operation for many hours at high temperatures, it will sooner or later begin to oxidise. This is will cause the heater to become lodged in-situ and difficult to remove. To allow easy removal the hole that the heaters is inserted to must be drilled all the way through this will allow simple removal by the use of a hammer and rod

 

 

HEAT TRANSFER LUBRICANS

When our heat transfer paste is used care should be taken so as not to allow it to be spread to the live end as it is a conductive material.

 

PROTECTION OF LEADS

Be sure to protect the leads of the cartridge heater from liquids such as oils, spray, hot sparks lubricants. If this happens it will cause premature failure of the heater by short circuiting. 

Leads can also be damaged by abrasion against near by object or sharp objects, this will also cause failure. The leads may also become trapped and crushed under objects, we have various options for this problem.

If the leads are subject to high temperatures above 250 deg C we suggest the use of ceramic beaded leads, this will give the best possible protect. The heaters can also be made with un-heated zone patterns that will protect the leads further.

At Cartridge Heaters we offer several types of lead protections to ensure a long working of of each of element.