dV
dV
dt
dt
= Voltage increase ratio
Time
Voltage
Caution
1. Communication cable should be prepared by the
customer.
2. Provide a stable power supply which is not affected
by surge 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.
Piping
Caution
1. Regarding the circulating fluid pipings, consider
carefully the suitability for shutoff pressure,
temperature and circulating fl uid.
If the operating performance is not suffi cient, the pipings may
burst during operation. Also, using corrosive materials such as
aluminium or iron for fluid contact parts such as piping may
cause clogging or leakage in the circulating fluid and facility
water circuits. Provide protection against corrosion when you
use the product.
2. Select the piping port size which can exceed the
rated fl ow.
For the rated fl ow, refer to the pump capacity table.
3. When tightening at the circulating fluid inlet and
outlet, drain port or overflow port of this product,
use a pipe wrench to clamp the connection ports.
4. This product series are constant-temperature fluid
circulating machines with built-in tanks.
Do not install equipment on your system side such as pumps
that forcibly return the circulating fluid to the unit. Also, if you
attach an external tank that is open to the air, it may become
impossible to circulate the circulating fl uid. Proceed with caution.
Electrical Wiring
Warning
1 . Grounding should never be connected to a water
line, gas line or lightning rod.
HRR
Series
Specifi c Product Precautions 3
Mounting / Installation
Warning
1. Do not use the product outdoors.
2. Do not place heavy objects on top of this product,
or step on it.
The external panel can be deformed and danger can result.
Caution
1 . Make sure that the rack and the rack rail can support
the weight of the product.
2. Refer to the Operation Manual for this product, and
secure an installation space that is necessary for
the maintenance and ventilation.
<Air-cooled refrigeration>
1. The air-cooled type product exhausts heat using the fan that is
mounted to the product. If the product is operated with
insufficient ventilation, ambient temperature may exceed 40
°
C,
and this will affect the performance and life of the product. To
prevent this ensure that suitable ventilation is available (see
below).
2. For installation indoors, ventilation ports and a ventilation
fan should be equipped as needed.
<Heat radiation amount/Required ventilation rate>
Model
Heat radiation
amount
[kW]
Required ventilation rate [m
3
/min]
Differential temp. of 3
°
C between
inside and outside of installation area
Differential temp. of 6
°
C between
inside and outside of installation area
HRR012-A
Approx. 2
40
20
HRR018-A
Approx. 4
70
40
HRR024-A
Approx. 5
90
50
HRR030-A
Approx. 6
100
60
Be sure to read this before handling the products. Refer to the back cover for safety instructions.
For temperature control equipment precautions, refer to the “Handling Precautions for SMC
Products” and the “Operation Manual” on the SMC website: http://www.smc.eu
26
Rear side of the product
Front side of the product
700 mm or more
300 mm or more
Содержание HRR Series
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