Orion RKS250F-S Operation Manual page 48

■ Electric wiring
1．The power capacity of the power cord to the product must meet the maximum operating current
specifications listed in the table below. Always properly connect the ground wire.
Power source（V･Hz）
Maximum operating current (A)
2．The product should have its own earth leakage breaker installed which will
also serve as overload protection.
Bleaker capacity （A）
Current sensitivity(mA)
3. Attach the power cord to terminals [L1], [L2], and
[L3] in the distribution box. (RKS500F, 750F)
(Pass the power cord through the power access
hole in the cabinet.)
4. Always properly ground this product.
Connect the ground wire to a proper earth/ground
point that has been installed by a qualified
electrician. Furthermore, the diameter of the
grounding wire must be at least 2 mm
5. Ensure the source voltage is within ±10% of the
specified voltage.
6. This product uses three-phase power. Be sure to check that there are no reversed power phases.
(RKS500F, 750F)
If the product is started and there are reversed power phases,
panel. If such a case arises, always cut off the power and reverse 2 of the 3 lines of the power cord
on the primary side.
(RKS500F, 750F)
In addition, never push the electromagnetic switch in order to force start the product, and never
reverse the secondary circuit wiring.
Doing so will damage the compressor by causing it to run in reverse.
IMPORTANT
● When powering up the product, be sure to follow the guidelines described under the
"Operation" section in the "Operating Manual" portion of this guide.
● Never operate the product when the water circuit is empty. Always fill the water tank and
confirm the water level before operating.
● Do not perform withstand voltage tests nor insulation resistance tests on this product. Doing
so can damage the product cooler controller.
Installation
Wiring Work
RKS500F
Three-phase 200±10%・50/60
4
RKS250F-S RKS400F-S
10 10
2
.
RKS750F
5
RKS500F RKS750F
5 10
30
Power cord
45
Its own earth leakage
breaker installed which
will also serve as
overload protection.
Interchange the
L1 and L3
connections.
Power cord
will be shown on the display
Secondary
Side
Primary
Side