How to clean grunge off of porcelain
Put the porcelain part in a plastic bag along with a pan of ammonia. Use grocery-store ammonia at full strength. Let it sit for 24-48 hours and you will be amazed that the grunge and filth wipes off with little effort.
Who can fix or service my Waterman Stove?
You will need to find a repair shop that specializes in vintage appliances. Since many Waterman stoves are found in the metro New York City area, a few options include: Belgrove Appliances in Yonkers, Peter Natoli of Father and Son Appliance Repair in Brooklyn. I have heard of others, but cannot recall their names – please let me know and I will include listings here.