172-65702M-04 (SQ-C01) 10 Dec 2020
31
Maintenance
Be sure to use only the recommended components when repairing the
unit and its components, and NEVER attempt to modify the unit in any
way. Failure to observe these precautions may result in damage to the
unit or burns or other injury due to malfunction or the discharge of fluids.
CAUTION
When disassembling or removing the unit, wait until the internal pressure
equals atmospheric pressure and the surface of the unit has cooled to
room temperature. Disassembling or removing the unit when it is hot or
under pressure may lead to discharge of fluids, causing burns, other
injuries or damage.
CAUTION
When all the piping work is completed based on the system flow
diagram, inspect once again that all the piping connections and
internal G threaded connectors are properly tightened, gaskets have
been installed and that no parts or connections are loose. Failure to do
so may result in burns or other injury from discharge of fluids.
CAUTION
Make sure to wear protective gear such as a helmet, safety glasses,
long-sleeve shirt, heat-resistant gloves, protective footwear, etc.
Failure to do so may result in burns or injuries.
CAUTION
Stop steam and water supply and make sure operation is stopped when performing
maintenance (part replacement). In addition, maintenance should only be performed
by trained and experienced personnel.
The locations where maintenance (part replacement) should be performed and the
recommended maintenance cycle are as follows.
No.
Name
Maintenance cycle
Component to be replaced
(1) Steam Supply Unit
1)
Two years
Pressure Reducing Valve
(2) Heat Exchanger Unit
Two years
Heat Exchanger, Pressure
Gauge
(3) Pre-mixing Valve
One year
Thermowax (internal parts)
(4) Mixing Unit
One year
Mixing valve, heat isolation fitting
(5) Hot Water Outlet Unit
Two years
Thermometer, shock absorber
(6) Line relief unit
One year
Line relief valve, heat isolation
fitting
(7) Strainer
When abnormalities are
confirmed at inspection
(8) Steam Trap
When abnormalities are
confirmed at inspection
(9) Pre-mixing Unit
When abnormalities are
confirmed at inspection
Pre-mixing Valve, Heat Isolation
Fitting
*
Pressure Gauge Unit
(When abnormalities are
confirmed at inspection)
Pressure Gauge
