172-65702M-04 (SQ-C01) 10 Dec 2020
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3) Remove the line relief unit, holding it with two hands.
Replace the line relief unit to be replaced and install the
new unit by following the same procedures in reverse.
Gaskets must be replaced if disassembled.
(7) Strainer
Refer to the "Cleaning" section for cleaning the strainer.
(8) Steam Trap
Refer to the steam trap instruction manual for the maintenance procedure. The
following model is a steam trap included with the unit as standard.
TLV free float steam trap: Model J3X-8 (Rc½)
(9) Pre-mixing Unit
Components required: (1) Pre-mixing Unit × 1
Normally, replacing the pre-mixing unit means replacing only the pre-mixing
valve (3). Follow the procedure below to replace the valve section and body of
the pre-mixing valve, which is the main equipment in the pre-mixing unit and the
heat isolation fitting.
1) Loosen the two G threaded connectors at the
inlet of the pre-mixing unit. Be careful as
residual condensate may flow out.
2) Loosen the G threaded connector connecting
the pre-mixing unit and the mixing unit. Be
careful as residual condensate may flow out.
3) Remove the pre-mixing unit, holding it with two
hands. Remove the pre-mixing unit to be
replaced and install the new unit by following
the same procedures in reverse. Gaskets
must be replaced if disassembled.
* Pressure gauge unit
Components required: (1) Pressure Gauge Unit × 1
The pressure gauge for steam is included in the heat exchanger unit, but it may be
replaced as a individual component by following the procedure below.
1) Loosen the threaded portion of the stainless steel
fitting located directly under the pressure gauge
and remove the pressure gauge unit.
2) Remove the pressure gauge unit to be replaced
and install the new unit by following the same
procedures in reverse.
