Filter
Top Products
– 29 –
SCALE RELATED MAINTENANCE (GAS & ELECTRIC BOILERS)
Periodic maintenance is necessary to keep your boiler clean and efficient. Initially, after three months
of steamer usage, it is recommended that you have your Vulcan-Hart authorized servicer inspect the
boiler and perform the descaler maintenance described below. Local water conditions and steamer
usage will determine the frequency that this service must be repeated; however, a minimum
recommendation is once a year. This maintenance is not covered by warranty.
Cathodic protector(s) are provided inside the boiler to reduce boiler and component corrosion and
reduce accumulation of scale from forming on the boiler interior walls. The cathodic protector(s) will
be consumed. How fast the cathodic protector(s) will be consumed depends upon the chemical
makeup of the feed water and the average volume of feed water used. An inspection by service
personnel is recommended so that the expected normal life of the cathodic protector(s) can be
estimated under your operating conditions. Thereafter, the cathodic protector(s) can be serviced at
the appropriate frequency for your situation.
PROBE HOUSING BLOWDOWN VALVE (GAS & ELECTRIC BOILERS)
Open valve monthly to blow down the probes and to remove sediment and scale buildup. Valve is
located toward the rear on the left side (refer to Fig. 3 or 4 on page 17). Wait until the boiler is cool
before opening the valve.
LUBRICATION — VHL SERIES
The door screw was factory lubricated with high-temperature grease, but will require periodic
relubrication by applying a bead of lubricant across the door handle screw threads. When the door
screw is properly lubricated, the hand pressure required to seal the door is greatly reduced and the life
of the screw and nut are lengthened. Frequency of lubrication depends upon use. Lubricate monthly
at first and let experience determine the frequency. A high-temperature grease for the door screw can
be obtained from Vulcan-Hart.