SMC Networks PA3000 Series Manual Download Page 28

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Maintenance

Warning

Product Specific Precautions 3

Be sure to read before handling.
Refer to front matters 42 and 43 for Safety Instructions.

Series

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1. Perform maintenance after consulting the instruc-

tion manual.

Obtain the instruction manual for the equipment from SMC or
our distributor and have sufficient knowledge of the equipment
before performing maintenance. Incorrect handling may cause
damage or malfunction of the equipment or system.

2. Perform maintenance work after confirming the

safety of the system.

Turn off the compressed air and power supply and exhaust
any remaining compressed air in the system before removing
the equipment and the compressed air supply/exhaust unit.
Discharge the residual liquid or sufficiently displace it as nec-
essary. Also, when reinstalling the equipment or restarting it
after replacement, confirm the safety of the product before
checking that it operates normally.

3. Do not disassemble the product, as disassembly

will invalidate the product's warranty.

When disassembly is necessary, please consult with SMC or
our distributor.

4. Drain discharge

Operating the system with drain accumulated in the equipment
or piping may cause malfunction of the equipment, splash over
into the downstream side, or unexpected accident. Periodically
discharge drain from components including the air filter.

5. Caution when transferring a high-temperature fluid

The product itself will become hot due to the high-temperature
fluid. Since touching the product directly may cause burns, al-
low sufficient time for the product to cool down when transfer-
ring a high-temperature fluid. The measurement of the product
temperature is recommended to confirm the safety of the sys-
tem before performing work.

6. Caution when a temperature history cycle is ap-

plied.

When a temperature history (heat cycle) is applied for Series
PAF3000/5000, the resin thread may extend. Additionally
tighten with the specified torque (M3: 0.11 to 0.12 N·m) to pre-
vent liquid leakage.

2. Service life of diaphragm and maintenance of con-

sumable items

• Regular maintenance is required for items including dia-

phragms, check valves, switching valves, pilot valves and
manual caps.

• If the operating cycle of the process pump exceeds the ser-

vice life of diaphragm, the diaphragm may be damaged due
to deterioration. If it is damaged, the fluid will leak from the
pilot air exhaust port and the air will blow out into the liquid
circuit. Consider the pump operation (breathing, decline of
discharge pressure, etc.) and the reference service life of
diaphragm, and conduct necessary maintenance as early as
possible.

• Items such as check valves, switching valves, pilot valves

and manual caps may experience malfunction earlier than
the diaphragm depending on the operating conditions.
Please conduct periodic maintenance.

• When conducting maintenance, obtain the necessary parts

indicated in the maintenance parts list (see page 727), and
perform work according to the maintenance and instruction
manuals.

[Calculation of reference service life (days) of dia-
phragm]

Reference service life (days) =
A (amount of discharge per cycle) x B (reference number of cycles in service life)

Flow (

min) x Operating time per day (hour) x 60 (min)

The amount of discharge per cycle for the air operated type
varies depending on the piping resistance. Therefore, calcu-
late the service life (days) using the operating frequency of a
solenoid valve.

Reference service life (days) =
B (reference number of cycles in service life)

Operating frequency of solenoid valve (Hz) x 60 (sec) x Operating time per day (hour) x 60 (min)

Caution

1. Caution when transferring a highly penetrating liq-

uid

When transferring a liquid that is highly penetrating through
fluoropolymer, components of the transfer liquid may enter the
openings inside the equipment. Also, they may become at-
tached to the external surface of the equipment. In this case,
take the same measures as handling the transfer liquid.

PA3

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PA3

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PA3

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PA5

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PA5

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PA5

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