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TECHNICAL - Replace Parkray Chiltern & Cumbria Glass

How to replace a Parkray Chiltern / Cumbria / Classic Heat Resistant Stove Glass.

 
 
Removing the Doors
 
When replacing a Parkray Stove Glass we recommend that the door is removed from the appliance which will make it easier to work on.  There are TWO hinges per door.  The hinges should have a bolt or pin through the centre.  Remove this pin/bolt.  As you remove the hinge, you may need to slightly lift (up) the front of the door taking the pressure off the hinge.  This will make removing the pin/bolt easier.
 
 
Treating / Soaking the Parkray Door Glass Retaining Nuts / Bolts
 
Place the Parkray Stove Door(s) on a scratch proof / soft surface (old cloth or blanket) with the outside of the fire door facing downward.  This leaves access to the glass and retaining bolts which hold the Glass or the Glass's Holding bracket..
 
Spray / Soak (with releasing oil) the bolts/nuts over night which are holding in the Glass ie.. the 'Glass Clasp' or the 'Glass Retaining Metal Strip'  (varies depending on stove).  Soaking the bolts will reduce the risk of them shearing / snapping when taking out.  They will usually be quite rusty. 
 
Be very careful NOT to twist off the bolts/studs; should this happen the holes should be redrilled and tapped and new bolts used.  It is important that all the bolts work correctly when re-installing the glass as this ensures a good seal between the glass and the fire door.
 
 
Removing the 'old' Parkray Glass
 
After removing the Glass Retaining Clasp / Strip the glass should be ready to take out.  
 
Remove the damaged glass and old seals.  We recommend that you wear some thick gardening gloves to handle the glass.  The edges of the glass can be sharp and can easily cut your hand / fingers. Dispose of the glass responsibly.
 
 
Cleaning & Painting the Parkray Stove Door
 
Scrape or chisel off the remaining seals (which often stick to the door) and scrape any rust which has accumulated.  Wire brush (or steelwool) the door area where the seal was taking off as much rust and smoothing off as possible. (It is important that the glass can sit flush against a clean door surface - so clean well).  If the door is very rusty, a grinder with steel brush can be used.
 
Treat any remaining (deep rooted rust) with a RUST preventor which helps to retard the rust, when completely dry, paint or spray the back of the door including sealing channels with a 'Heat Resistant Paint' which makes the inside of the doors look fresh & clean (which is seen when the appliance doors are open) but most importantantly helps to contain the rust growth around the glass edges.
 
NOTE: IT IS IMPORTANT TO TOTALLY CLEAN & TREAT THE RUST FROM THE AREA WHERE THE GLASS SITS / IS AGAINST THE DOOR.  UNEVEN SURFACES WILL CAUSE CRACKING WHEN THE FIRE TEMPERATURE IS INCREASED (AS PARTS OF THE APPLIANCE EXPAND).  GLASSES CAN ALSO CRACK IN SUMMER WHEN THE FIRE IS NOT IN USE (AS THE RUST EXPANDS).  DO NOT OVER TIGHTEN THE GLASS ((FINGER TIGHT ONLY) WHEN REFITTING AS THIS WILL NOT ALLOW ROOM FOR METAL EXPANSION.
 
 
Replacing the NEW Parkray Glass
 
Parkrays orginally were fitted with 'Parkray Heat Resistant U Channels'.  These are difficult to obtain as no longer manufactured, however, we do obtain the Orginal Parkray U Channels from time to time (please ask).  A cheaper alternative is to use a 'Self Adhesive Heat Resistant Ladder Rope' which sticks around the edges of the glass (stick half on the back of the glass, lap over the edge and then on the front to provide a U shape around the edge of the glass).  Read your stoves instructions to identfy the correct Rope/ Seal required.  Poorly fitting Rope will result in extra oxygen entering the appliance (between the door and glass) making it burn more rapidly and use more fuel.
 
When the Stove Paint is dry, refit the new Ladder Rope Tape to ALL four edges of the glass.
 
Lay the NEW Stove Glass(es) on the Door(s) and ensure the seal is well fitted around the edge of the glass / door.
 
Grease the Glass retaining bolts/studs prior to refitting with high temperature grease, it will make them easier to remove in the future. When refitting the bolts/studs it is important that they are tightened down evenly but not over-tightened as this may well crack the glass when the metal of the door expands with heat from the fire.. (just 'finger' tight).
 
Check and ensure the seal is well placed around the edge of the glass / door.
 
 
Refit Parkray Stove Door
 
Once you have fitted and checked the glass / seals, rehang the doors on the hinges.  When the fire is lite, make sure it is burning correctly with NO air gaps or intakes around the edge of the glass or the door seals.  If there is air sucking in, the fire will burn too quickly burning excessive fuel.
 
 
 
 
Health Warning: It is important when refering to our guidelines that you work / read them in conjunction with the instruction manual for the stove.  This information should not be seen as advise for your particular stove.  It is just a 'general' guideline of how we would change a Stove Glass in our Workshop.  We recommend that you use a trained / qualified engineer to replace Stove Glasses or at least sign off your work.  This information is NOT for GAS appliances.
 

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