23
Inspection and Maintenance
Take measures to prevent people from coming into direct contact with
product outlets. Failure to do so may result in burns or other injury from
the discharge of fluids.
CAUTION
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
Make sure the external power supply switch is OFF before carrying out
work on the wiring or inspections involving disassembly.
If such work is carried out with the power on, there is a danger that
equipment may malfunction or electric shock may occur, leading to
injury or other accidents.
CAUTION
Operational Check
To ensure long service life of the MC-COSR, the following inspection and
maintenance should be performed regularly.
Part
Inspection and Maintenance Frequency
Screens
(Pilot)
Disassemble and clean annually.
If there is substantial blockage, install a strainer (60
mesh or finer) ahead of the MC-COSR.
Main Valve, Main
Valve Seat, Pilot Valve
and Pilot Valve Seat
Replace after approximately 15,000 hours.
If there is chattering or dirt, premature wear may result.
Piston Ring
Replace after approximately 8,000 hours.
If there is chattering or if scale build-up is severe,
premature wear may result.
Piston
Replace after approximately 30,000 hours.
If hunting or chattering takes place, premature wear may
result.
Diaphragm
Replace after approximately 30,000 hours.
If hunting or chattering takes place, cracks or fatigue
may develop in a short period of time.
Bearing
(in spring housing)
Replace after approximately 8,000 hours.
If the ambient temperature is high, premature wear may
result.
172-65185A-08 (MC-COSR Multi-control Valve) 20 Nov 2014
