172-65702M-04 (SQ-C01) 10 Dec 2020
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Maintenance and Inspection
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
Do not apply excessive force to the unit, pipings, and peripheral piping.
Failure to do so may result in injury or deformation of the device.
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
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
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
There are two types of inspection for maintenance of the unit, operational checks
and cleaning.
The operational check includes inspection items based on visual and hearing
sounds to see if there is any abnormal condition during operation.
The section "Cleaning" describes how to clean the unit. When carrying out the
maintenance of the unit, stop supplying utilities and stop operating the unit.
Operational Check
For trouble-free use of the unit, perform an operational check at least once a month
or on a regular basis.
Make sure to wear protective gear such as a helmet, protective footwear,
heat-resistant gloves, etc. when carrying out the inspection and pay close attention
to high temperature piping.
1. Removing the cover
Remove the cover from the body when carrying out the operational check.
Loosen the cover fixing screws at the top and bottom of the unit and remove the
cover. Do not touch piping or components during the check as there is a risk of
injury and burns.
2. Operational Check Items
a) Check for water and steam leakage from the internal unit and peripheral
piping.
b) Check for abnormalities in the water temperature while the unit is in
operation. (Check the water temperature with the thermometer installed on
the front of the unit.)
c) Check whether the steam pressure in the unit is within the normal range.
(Operating range is from 0.18 to 0.4 MPaG. Check with the steam pressure
gauge installed on the side of the unit.)
d) Check for any abnormal noise during the operation.
