Algas SDI 160H, Руководство по эксплуатации и техническому обслуживанию

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Maintenance
Algas-SDI Operation and Maintenance Manual – P/N – 54000
4-17
Table 6 – Annual Maintenance Requirements
Annual M a intenance Items
Strainer Remove the plug and clean the screen. Replace screen if tears or holes
are present (40 – 80 Mesh). If oils or contaminants are present, it may be
necessary to use a cleaner to remove all of the contaminants.
Thermostat Check thermostat for proper operation per the Start-up procedure .
Establish pilot and turn the thermostat dial counterclockwise to high,
burners should cycle on. Turn the dial clockwise to the “OFF” position,
main burner and pilot should both extinguish in a short period of time.
Replace the thermostat if not operating properly (thermostat cannot be
serviced). NOTE: Before replacing the thermostat, be sure the
thermocouple is delivering the proper voltage to the thermostat (see
below).
Thermocouple Check electrical output of the thermocouple with a multimeter. The
thermocouple output (when hot) should be 13 - 30 mV DC. Lower than
13 mV DC reading indicates the thermocouple should be replaced.
NOTE: Be careful not to over tighten the thermocouple! First, hand
tighten and then turn 1/8
th
turn with wrench.
Pilot Assembly Inspect pilot flame to ensure flame is enveloping 3/8” to ½” (9-13 mm) of
the thermocouple tip. Clean pilot orifice. If pilot assembly is corroded or
significantly deteriorated, replace complete pilot assembly.
Main Burner Assembly Inspect burner tips to ensure each tip has proper flame. For easy access
to clean the burner tips, disconnect burner supply line and remove the
burner from the unit. With compressed air (if possible), blow out main
burner ring prior to cleaning the burner tips. Check orifices and air supply
openings for debris, insects and/or dirt. Clean any plugged or obstructed
orifices.
Liquid Inlet Valve Use repair kit to replace internal components of the liquid inlet valve. See
detailed
Liquid Inlet Valve Maintenance Instructions
for further
information.
Capacity Control Valve Use repair kit to replace internal components of the capacity control valve.
See detailed Capacity Control Valve Maintenance Instructions for further
information.
Vaporizer Tubing Inspect all tubing for pitting or flaking - run hands along the underside of
each of the tubes to check for signs of corrosion. Replace tubes if
corroded. Disconnect all tubing and blow tubes free of debris. Re-install
tubing to the vaporizer and check and tighten all fittings.
Relief Valves Inspect all relief valves on the vaporizer, liquid and vapor lines for signs of
corrosion and damaged or missing rain caps. Replace rain cap if it is
damaged or missing. Replace relief valves per manufacturer’s
recommended replacement period. Also replace relief valve if it shows
significant corrosion on the outlet or has relieved.
Burner Regulator Check regulator delivery pressure at the drip leg and at the burner
pressure port to ensure proper pressure is delivered to the thermostat and
burners. See page 1-3 for burner pressure specifications.
Heat Exchanger 1. Check heat exchanger flue for holes or excessive scale.
2. Remove debris, soot build-up and any obstructions from the
outside surface of the heat exchanger between the fins and in the
area between the heat exchanger and flue. High pressure air or
a wire brush may be used for removal. A large amount of build-
up on the outside of the heat exchanger can lead to a reduced
capacity from your vaporizer.
3. Check bottom head of the heat exchanger for pitting and/or
scaling. Should heat exchanger head thickness be less than
0.265” (6.7 mm) the heat exchanger should be removed from