Ross Controls CATEGORY 4 - 5_2 VALVES CROSSMIRROR SERIES 77 - Manual (Page 11)

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Cautions
MUFFL-AIR ® -Silencers
Male thread
Pipe ø k
v
- Model Dimensions - mm
size value number A B
R 3/8 5,0 D5500A3003 32 96
R 1/2 6,1 D5500A4003 32 96
R 3/4 6,1 D5500A5013 32 96
A
B
5/2-Way Double Valves
with C ROSS M IRROR ® -Sensing
PRE-INSTALLATION or SERVICE
1. Before servicing a valve or other pneumatic component, be sure
that the electrical supply is turned off and that the entire pneumatic
system is shut off and exhausted.
2. All ROSS products, including service kits and parts, should be
installed and/or serviced only by persons having training and
experience with pneumatic equipment. Because any installation can
be tampered with or need servicing after installation, persons
responsible for the safety of others or the care of equipment must
check every installation on a regular basis and perform all
necessary maintenance.
3. All applicable instructions should be read and complied with be-
fore using any fluid power system in order to prevent harm to per-
sons and/or equipment. In addition, overhauled or serviced valves
must be functionally tested prior to installation and use.
4. Each ROSS product should be used within its specification limits.
In addition, use only ROSS parts to repair ROSS products. Failure
to follow these directions can adversely affect the performance of
the product or result in the potential for human injury.
FILTRATION and LUBRICATION
5. Dirt, scale, moisture, etc. are present in virtually every air sys-
tem. Although some valves are more tolerant of these contaminants
than others, best performance will be realized if a filter is installed to
clean the air supply, thus preventing contaminants from interfering
with the proper performance of the equipment. ROSS recommends
a filter with a 5-micron rating for normal applications.
6. All standard ROSS filters and lubricators with polycarbonate
plastic bowls are designed for compressed air applications only. Do
not fail to use the metal bowl guard, where provided, to minimize
danger from high pressure fragmentation in the event of bowl fail-
ure. Do not expose these products to certain fluids, such as alcohol
or liquified petroleum gas, as they can cause bowls to rupture,
creating a combustible condition, hazardous leakage, and the
potential for human injury. Immediately replace a crazed, cracked
or deteriorated bowl. When the bowl gets dirty, replace it or wipe it
with clean dry cloth.
7. Only use lubricants which are compatible with materials used in
the valves and other components in the system. Normally,
compatible lubricants are petroleum base oils with oxidation
inhibitors, an aniline point between 82°C and 104°C, and an ISO 32,
or lighter, viscosity. Avoid oils with phosphate type additives which
can harm polyurethane components, potentially leading to valve
failure and/or human injury.
AVOID INTAKE / EXHAUST RESTRICTION
8. Do not restrict the air flow in the supply line. To do so could re-
duce the pressure of the supply air below the minimum require-
ments for the valve and thereby cause erratic action.
9. Do not restrict a poppet valve's exhaust port as this can adverse-
ly affect its operation. Exhaust silencers must be resistant to clog-
ging and have flow capacities at least as great as the exhaust ca-
pacities of the valves. Contamination of the silencer can result in
reduced flow and increased back pressure.
ROSS expressly dis-
claims all warranties and responsibility for any unsatisfactory per-
formance or injuries caused by the use of the wrong type, wrong
size, or inadequately maintained silencer installed with a ROSS
product.
DOUBLE VALVES
10. Mechanical power presses and other potentially hazardous ma-
chinery using a pneumatically controlled clutch and brake mecha-
nism must use a press control double valve with a monitoring de-
vice. A double valve without a self-contained monitoring device
should be used only in conjunction with a control system which as-
sures monitoring of the valve. All double valve installations involving
hazardous applications should incorporate a monitoring system
which inhibits further operation of the valve and machine in the
event of a failure within the valve mechanism.