FT-C Vertical Electric Thermal Fluid Heater Manual 12 2013 ISSUE 1
4. Sufcient lubricity, i.e. not likely to cause seizure.
k) The thermal uid manufacturer must guarantee the characteristics of the product, and verify
that the uid bulk temperature limitation exceeds the expected operating temperature.
l) After a uid is selected, refer to the manufacturer’s recommendations, published in
compliance with OSHA.
m) If the uid expansion volume from 10°C to 315°C exceeds 20% of the initial uid volume,
consult Fulton Ltd.
Fulton Ltd cannot be held responsible in the case of accident or damage resulting from the use of inadequate
uid.
a) Nearly all leading manufacturers of heat transfer uids provide an after sales service to
monitor the condition of the uid in operation and make recommendations when replacement
becomes necessary.
b) Each uid manufacturer has procedures for regular testing and analysis of the uid. These
usually allow for a sample to be taken and analysed at least once a year, although actual
frequency will depend on operating temperature, number of hours operated weekly, and the
results of tests made during the rst weeks of system operation.
c) Fulton Ltd recommends that the thermal uid in your system be analysed within the rst two
months after start-up.
d) During the rst few months of operation, sampling may be carried out at frequent intervals to
conrm that system performance has been predicted correctly.
e) If the supplier of your thermal uid does not contact you within four weeks of commissioning,
contact the supplier and make certain that the “ll” is registered for routine analysis.
a) The possibilities of thermal uid breakdown are very slim in a typical closed loop thermal
uid system. Fulton’s D/A tank creates a “cold seal” of uid that is slightly above ambient
temperature. This prevents oxidation that will happen when high temperature uid contacts
air.
b) This will also occur when hot thermal uid contacts air at a leak in the system piping.
Oxidised thermal uid becomes acidic and will damage the thermal uid system. Thermal
uid breakdown can occur in sections of piping where there is a low ow condition. A low
ow rate through the heater will result in high lm temperatures leading to breakdown of the
thermal uid.
c) Multiple pressure switches and a differential pressure switch are used to prevent this
condition from occurring. These safeties must not be bypassed at any time.
d) Exceeding the maximum operating temperature of the thermal uid will also result in thermal
uid breakdown. Fulton heaters are equipped with a High Temperature Controller and
High Temperature Reset Button (located on the front of the panel box) to prevent this from
occurring.
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