SmartPlate Installation, Operation & Maintenance Manual
CHAPTER 8
– CORRECTIVE MAINTENANCE
OMM-0069_0H
• SP-100 • 1/30/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
65
of
134
HEAT EXCHANGER CLEANING BY DISASSEMBLY Instructions
4. Open the valve on the Strainer and drain the boiler water from the unit. It will be necessary
to loosen a Victaulic coupling by the heat exchanger to allow air into the pipe during
draining.
5. Next, connect a hose to the Drain Valve on the DHW Side of the piping assembly. Open
the Relief Valve to allow air into the pipe during draining
6. Open the Drain Valve to drain the domestic water from the unit.
7. After the boiler water and domestic water have been drained from the unit, close the Relief
Valve opened in step 5 and tighten the Victaulic coupling loosened in step 4.
8. To prevent possible damage, ensure that all of the following precautions are observed:
•
Under no circumstances should hydrochloric acid be used with STAINLESS STEEL
PLATES.
•
Water of more than 300 ppm chlorine may not be used in the preparation of cleaning
solutions.
•
It is very important that carrying bars and support columns in aluminum are protected
against chemicals.
•
Do NOT use brushes with carbon steel bristles or steel wool. A fiber type brush is
recommended. As a last resort, use a brush of similar material to the thermal plate.
Be careful not to scratch the plates or damage gaskets if they are to be reused.
•
After brushing, rinse each plate with water.
•
For better sealing, wipe all gaskets dry.
CAUTION!
THE FOLLOWING SOLVENTS SHOULD NOT BE USED IN CONTACT WITH GASKETS:
•
Ketones (e.g. Acetone, Methyletylketone, Methylisobutylketone
•
Esters (e.g. Ethyl acetate, Butyl acetate)
•
Halogenated hydrocarbons (e.g. Chlorothene, Carbon Tetrachloride, Freons)
•
Aromatics (e.g. Benzene, Toluene)
WARNING!
CARE MUST BE EXERCISED WHEN HANDLING CERTAIN FLUIDS. FOLLOW
MANUFACTURER'S INSTRUCTIONS. USE EYE AND SKIN PROTECTION. WEAR A
RESPIRATOR WHEN REQUIRED
.
9. To open the Double-Wall heat exchanger and remove plates, refer to the procedures in
sections 8.7.1 and 8.7.2.
10. Table 8-2 lists the recommended cleaning methods for the type of heat exchanger fouling
encountered.
