Heat Transfer Fluid; Fault Finding; Labelling - Orkli OSKOL-150 Manual De Usuario

COLLECTOR
Collector, fixing and connection visual check
Check fixings and installation of supports and elements
SOLAR CIRCUIT
Heat transfer fluid replacement
Collector pump operation check (on/off)
Solar fluid level check, fill where necessary
DHW CIRCUIT (TANK)
Accumulator cleaning
Fitting leak-tightness check
16.

HEAT TRANSFER FLUID

The primary circuit leaves the factory filled with the correct amount of heat transfer fluid.
Manufacturer: LIV
Product: FRIGOSOL 50% (propylene glycol 50%)
Description
Heat transfer fluid with anti-freeze and corrosion inhibitors for use in solar panels, specially prescribed for those exposed
to high thermal loads.
Aspect
Colour
% Theoretical volume
Congelation point
Practical protection
pH value
Density at 20º C g/ml
Refractive index at 20º
Characteristics
An physiologically inoffensive fluid, green tint, clear liquid based on an aqueous solution of 1.2 Propylene glycol and other
glycols with a high boiling point, that is used as a heat transfer fluid in thermal solar systems, particularly those subjected
to high heat loads. The product is mixed with deionised water to guarantee protection against freezing to about -35ºC.
Contains non-toxic corrosion inhibitors, free of nitrates, amines and phosphates. Complies with requirements contained in
Standard DIN 4757.
17.

FAULT FINDING

Description
Low system efficiency
Leaks in 4.5 bar safety valve
18.

LABELLING

Orkli S. Coop. systems are identified by a label. All system data is included on the label. The information provided on the
label is important for future system identification. Removing labels will make it difficult to identify the system in future and
may create servicing problems.
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Maintenance Work
Technical properties
Visual
Visual
ASTM D-1177-65ºC
pH-metre
ASTM D-1122-84
Refractometer
Cause
Low thermal fluid level (air in
circuit)
Leaks in connection pipes
Dirty methacrylate cover
Excessive pressure at main water
inlet (supply)
Maintenance Interval
ANNUAL
ANNUAL
MAXIMUM 3 YEARS
ANNUAL
ANNUAL
ANNUAL
ANNUAL
Transparent liquid
Green
50%
-35ºC
-40ºC
8
1.080 g/ml
1,385
Action
Purge and refill the thermal fluid
Tighten the connectors
Clean the Plexiglass cover
Install a pressure reducer