EWWD440~850AAYNNO**
Packaged water-cooled water chillers
4PW25558-1B
Installation and operation manual
7
■
Provide for sufficient service space.
■
Pay attention to the drain
Make foundation of the unit higher than the surrounding.
For machine maintenance, the floor should be treated with
water-proofing. The drainage ditch should be provided around
the foundation. Equip the drain ditch with drain piping. Avoid
installing the unit in a place where overhead flooding or
submersion is expected during flood.
■
Pay attention to lighting
For the sake of performing daily maintenance provide for
efficient lighting around the unit.
Unit front (Switch box side):
≥
100 lux.
Surrounding of the unit except for the above:
≥
80 lux.
■
For further information about foundation dimensions, see the
foundation drawing to perform correct work.
Sound insulation and vibration isolation work
■
Be careful with the reflected sound
Sound in the machine room may get higher due to the effect of
reflected sound and interference with operating sound of other
equipment, etc. Take appropriate sound absorption and sound
insulation measures.
■
Preventing the vibration propagation through piping
Unit vibration may propagate through chilled water piping,
cooling water piping and relief valve discharge pipes. Sound/
vibration problems may result in unexpected places.
Perform the isolation of vibration by using expansion joints
immediately near the unit.
■
Perform the vibration isolation in function of the installation site.
This machine comes with vibration isolation pads and metal anti
vibration supports as a standard. Position of vibration isolation
pads and metal anti vibration supports as on the foundation
drawing results in a sufficient degree of vibration isolation.
However, when vibration is critical, like at middle stories of the
building, take proper vibration isolation measures with spring
vibration isolating devices.
This machine comes with 6 vibration isolating pads and 6 metal
anti vibration supports. Lay them down near foundation bolts
and near the center of the unit base. (See the following figure)
1
Unit
2
Front side – switch box side
A
From the leftmost end of the equipment
B
From the rightmost end of the equipment
C
From the frontmost of the equipment
D
From the backmost of the equipment
E
From the top of the equipment
Service space dimensions
A
≥
3000
Required in the direction of the length or side to
side (space for pulling out tubes)
B
≥
500
Required both in the direction of the length and
side to side
C
≥
1200
Required at front side
D
≥
500
Backside maintenance space
E
Required for maintenance of compressor
CAUTION
Provide for enough service space.
Insufficient space does not allow safe maintenance
and may lead to injury.
1
2
A
B
C
D
E
1
Unit base
2
Vibration isolating pad
3
Metal anti vibration support
4
Foundation anchor bolt
5
Foundation
1 2
+3
4
5
A
A
A-A
1
4
2
3
5