Crighton Engineering Magnum p100 Operating manual

Maintenance Guide
100 Neilson Street, Onehunga, Auckland, New Zealand
Tel: [phone] Fax: [phone]
www.crighton.co.nz

Replacing the door glass, seal tape and door seal rope
Open the door fully. You will see the glass is retained by a frame that clips into the hinge at the
right side (facing the inside of the door) and held by two screws at the left side. The door seal rope
is fitted into a groove formed in the glass retainer.
To replace the door seal rope:
Pick out one end of the door seal rope at the join which is located centrally at the right
hand (hinge) side. Pull gently along the rope until it is all out.
To replace the rope, first dab a spot of Mani-seal into the groove formed by the glass
retainer at all four corners and the centre of all four sides. Position the rope into the
groove, starting at the center of the side next to the hinge and working around until the
ends meet. There should be a tight join at the ends to prevent air leaks.
The door may appear excessively tight when the door rope has just been replaced. The rope
needs to bed in, and this may take a number of openings and closings of the door to achieve.
To remove the door glass:
Open the door and remove the two small screws holding the left (door handle) side of the glass
retainer in place. Lift the left side of the retainer and glass away from the inside of the door, until it
is clear of the door frame then pull the right end out from behind the hinge. Ensure the glass does
not drop out of the retainer frame while this is being done.
Lay the glass and retainer down on a padded surface and push out the glass from the back of
the retainer frame.

To replace the glass seal tape:
ove and carefully peel off the old ladder tape around the edge.
ge of the glass so
the firebox and will cause st
it the glass back into the retainer frame, ensuring that the original outer surface of the glass is
again going to be on the outside of the door.
frame.
e behind the hinge and rotate the left side
back into the door frame to align it with the screw holes. Refit the screws.
Remove the glass as detailed ab
Clean the glass to remove any soot or creosote. Do not use abrasive cleaners.
Fit new ladder tape to the edge of the glass ensuring it is centered on the ed
that an equal amount of tape will extend down both faces of the glass when it is folded down.
Make sure that the ends of the tape meet tightly at the join. A gap here will allow air leaks into
reaking of the glass with soot.
F
Refit the glass and retainer back into the door
Place the two lugs on the right side of the retainer fram
Refit the door rope.

Replacing the baffle and air tube
pen the door fully and look up inside the fire box.
x chamber. You will need to remove the two
e the air tube and baffle.
To remove the side Promates:
ing, there are 2 screws holding plates that extend the height of the
screws and take out the plates.
pulling forward and out the door.
O
You will see the air tube and baffle above the firebo
side bricks in the firebox before being able to remov
At either side of the door open
door opening. Remove these
The side bricks can then be pulled out by lifting slightly to clear the bottom retainers and rotating
the bottom edges towards the middle of the firebox, and then

To remove the air tube:
The air tube is held in place by passing through holes in either side of the firebox.
It is necessary to firstly remove the pin at the right hand end of the air tube, against the right side
wall. Then, depending on the age of the fire, it may be necessary to remove the bolt or rivet that
holds the bracket at the left end of the air tube in place against the wall, and then slide the
airtube to the right until the left end can be rotated down into the firebox to allow the right end to
come free. Hold the baffle with one hand – it is supported at the front by the air tube.
Take the air-tube out through the door.
(Note that later-manufacture fires do not have the bolt or rivet at the left end. They merely have
a stub that locates the air-tube against rotation. The pin at the right hand end holds the tube in
place.)
To remove the baffle:
The baffle is held up by the air tube at the front, as noted above. The rear is supported by a ledge
in the rear casting. Let the baffle drop down and then rotate slightly to take it out the door.

Paint Maintenance