172-65465MA-04 (JH8R-P) 11 May 2018
16
Options for Area B
With Air Vent Valve
(Model: JH8R-V)
Operating the Air Vent Valve
Be sure to use only the recommended components when repairing the
product, and NEVER attempt to modify the product in any way. Failure to
observe these precautions may result in damage to the product or burns
or other injury due to malfunction or the discharge of fluids.
CAUTION
Installation, inspection, maintenance, repairs, disassembly, adjustment and valve
opening/closing should be carried out only by trained maintenance personnel.
1. Locate the air vent valve exhaust port before operating the air vent valve, and
take care to avoid being burned by hot air or steam blowing from the vent. The
exhaust port is a 2 mm (
1
/
16
″
) diameter hole on the side of the air vent valve body.
DO NOT
under any circumstances allow any unprotected part of your body to
come in front of this hole.
2. Never leave an open air vent valve unattended.
Tools required: 1) open-end wrench (distance across flats 17 mm (
21
/
32
″
))
2) long-handled mirror to check for steam leakage after
closing the exhaust port (leaking steam cloud the mirror)
•
Using the open-end wrench, slowly turn the hexagonal head of the valve stem
counterclockwise.
•
Watch the exhaust port to determine the condition of the fluid discharged.
General guidelines:
Cloudy-water droplets and mist spraying out, indicating that air and
condensate are being discharged
Clear---indicating that steam is being discharged; the valve port may now
be closed
CAUTION
The air vent valve stem cannot be
removed from the air vent valve body.
Attempting to remove the valve stem by
pulling it upward may damage it and
cause burns or other injury due to
malfunction or the discharge of steam or
condensate.
Air Vent Valve Stem
Air Vent Valve Body
Exhaust Port
Cover
17 mm
(
21
/
32
in)
