The overheating of the stuffing box of the fire pump is mainly caused by the packing of the fire pump or the wear of the seal, the incorrect packing, the problem of the packing design, the wear of the mechanical seal and the like.
In general, the fire pump has overheating of the stuffing box, mainly due to the filling of the fire pump or the wear of the seal, the incorrect packing, the problem of the packing design, the wear of the mechanical seal:
1) The packing or seal in the stuffing box is worn out, causing air to leak into the pump casing.
Mearures: Check the packing or seal and replace as needed. Check that the lubrication is normal.
2) The stuffing box does not have the correct packing (the packing is not enough, it is not properly inserted or run in, the packing is too tight)
Measures: Check the packing and refill the stuffing box.
3) Design problems with fillers or mechanical seals
Measures: Consult the manufacturer.
4) Mechanical seal damage
Measures: check and replace as required. Consult the manufacturer.
5) Sleeve scratching
Measures: repair, rework or replace as required.
6) The packing is too tight or the mechanical seal is not properly adjusted
Measures: Check and adjust the packing and replace as required. Adjust the mechanical seal (refer to the manufacturer's instructions provided with the pump or consult the manufacturer).
