SMC Networks HRL Series, Руководство пользователя

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HRL
Series
Specific Product Precautions 4
Be sur e to read t h is bef or e h andlin g t he p roducts . Refe r to th e b a ck c o ve r f or sa f ety instructions. For temperature control
equipment precautions, refer to the “Handling Precautions for SMC Products” and the “Operation Manual” on SMC website:
https://www.smcworld.com
W arning
G rounding should n e ver be connected to a water lin e ,
gas line or lightning rod.
Caution
1. Power supp l y and communication ca b les should be
prepared b y user .
2. Provide a sta ble p ower supp l y whi ch is not af f ected
b y sur g e or distortion.
If the voltage increase ratio (dV/dt) at the zero cross should
exceed 40 V/200
μ
sec., it may result in malfunction.
3. Thi s p rodu c t i s i nsta lle d wit h a brea k er wit h t h e
f ollowing operating c haracteristics.
For the user ’ s equipment (on the upstream side), use a breaker
whose operating time is equal to or longer than the breaker of
this product. If a breaker with shorter operating time is connected,
the user ’ s equipment could be cut off due to the inrush current
of the motor of this product.
dV
dV
dt
dt
= Voltage increase ratio
Time
Voltage
4 h
2 h
1 h
30 min
20 min
14 min
10 min
6 min
4 min
2 min
1 min
30 s
20 s
10 s
5 s
2 s
1 s
0.5 s
0.2 s
0.1 s
0.05 s
0.02 s
0.01 s
100 135 200 300 400 500 600 700 1000 1500 2000 3000 4000
Current (% for chiller main breaker volume)
Operating time
Min.
Max.
Electrical Wiring Circulating Fluid
Caution
1. Av o i d o il or ot he r f or eig n matt e r ent e r i ng t h e
ci rculating fluid.
2. When water is used as a ci rculat i n g fl uid, use tap
water that con f orms to the appropriate water quality
standards.
Use tap water that conforms to the standards shown below (in-
cluding water used for dilution of ethylene glycol aqueous solu-
tion).
T ap W ater (as Circulating Fluid) Quality Standards
The Japan Refrigeration and Air Conditioning Industry Association
JRA GL-02-1994 “Cooling water system – Circulation type – Make-up water”
Item Unit Standard value
Influence
Corrosion Scale
generation
Standard item
pH (at 25
°
C) — 6.0 to 8.0
Electric conductivity (25
°
C) [
μ
S/cm] 100
∗
1
to 300
∗
1
Chloride ion (Cl – ) [mg/L] 50 or less
Sulfuric acid ion (SO
42–
) [mg/L] 50 or less
Acid consumption amount (at pH4.8) [mg/L] 50 or less
Total hardness [mg/L] 70 or less
Calcium hardness (CaCO
3
) [mg/L] 50 or less
Ionic state silica (SiO
2
) [mg/L] 30 or less
Re
ference item
Iron (Fe) [mg/L] 0.3 or less
Copper (Cu) [mg/L] 0.1 or less
Sulfide ion (S
2–
) [mg/L] Should not be detected.
Ammonium ion (NH
4+
) [mg/L] 0.1 or less
Residual chlorine (Cl) [mg/L] 0.3 or less
Free carbon (CO
2
) [mg/L] 4.0 or less
∗
1 In the case of [M
Ω
·cm], it will be 0.003 to 0.01.
: Factors that have an effect on corrosion or scale generation.
Even if the water quality standards are met, complete prevention of corrosion
is not guaranteed.
3. Wh en de i on iz ed water is used, the ele ctr ic condu c t ivi ty
s h ould be 1
μ
S/cm or highe r ( Elec tri c res i st iv ity:
1 M
Ω
· cm or l ower) .
Operation
W arning
1. Confirmation be f ore operation
1) The fl uid level of a tank should be within the speci fi ed range
of “HIGH” and “LOW.”
When exceeding the speci fi ed level, the circulating fl uid will
over fl ow.
2) Remove the air.
Conduct a trial oper ation, looking at the fluid l evel.
Since the fl uid level will go down when the air is removed
from the user ’ s piping system, supply water once again
when the fluid level is reduced. When there is no reduction
in the fluid l evel, the job of removing the air is completed.
Pump can be operated independently.
2. Confirmation during operation
Chec k the circulating fluid tempe rature.
The operating temperature range of the circulating fluid is be-
tween 15 and 25
°
C.
When the amount of heat generated from the user ’ s equip-
ment is greater than the product ’ s capability, the circulating
fluid temperature may exceed this range. Use caution regard-
ing this matter.
3. Emer g en c y stop method
When an abnormality is confi rmed, stop the machine immedi-
ately. After the machine has stopped, make sure to turn off
the breaker of the user ’ s equipment (on the upstream side).
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