Sunday 27/July/2014.
A good run today for the first full open day with all the machines running and supplied from the new boiler. During last weeks commissioning a few issues were identified and we began to address these today. The two new thermostats fitted to the on-board fuel heater were tweaked and a neon indicator added to the low temp lock-out thermostat relay. No further low oil temp lock-out occurred. Boiler back-end over temperature became an issue, even when we fitted a smaller 6.0 gal/hour nozzle. While on high-fire we had abundant steam generating capacity, but back-end temp restricted the use of this setting. We did manage to find a suitable compromise between machine speed and high-low fire modulation to achieve a stable operating condition, (a short high-fire cycle - a few minutes - when operating pressure could be achieved before a backend temp trip) Observations clearly demonstrated available steam output was restricted only by back-end temp and, given this sorted, the boiler was capable of producing well above our routine demand.
We are working on a solution.
A good run today for the first full open day with all the machines running and supplied from the new boiler. During last weeks commissioning a few issues were identified and we began to address these today. The two new thermostats fitted to the on-board fuel heater were tweaked and a neon indicator added to the low temp lock-out thermostat relay. No further low oil temp lock-out occurred. Boiler back-end over temperature became an issue, even when we fitted a smaller 6.0 gal/hour nozzle. While on high-fire we had abundant steam generating capacity, but back-end temp restricted the use of this setting. We did manage to find a suitable compromise between machine speed and high-low fire modulation to achieve a stable operating condition, (a short high-fire cycle - a few minutes - when operating pressure could be achieved before a backend temp trip) Observations clearly demonstrated available steam output was restricted only by back-end temp and, given this sorted, the boiler was capable of producing well above our routine demand.
We are working on a solution.