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Stopping during winter time
Do not cut-off the power supply.
- This may result in water leakage or pipe damage
because pump will not operate to prevent
freezing. Do not cut-off the power supply for the
pump.
Stop the operation with water pipe valve opened.
- Stop the operation with valve opened to make
water circulate when the pump operates. If the
water does not circulate, it may freeze and cause
product malfunction due to heat generated on
pump.
CAUTION
When outdoor temperature drops below zero during
winter, do not let water left in water pipe and water
side heat exchanger. It may cause plate type heat
exchanger freeze and get damage.
- Drain water or exchange to anti-freeze.
Stopping for a long time
Drain water in water pipe and water side heat
exchanger.
- Open drain valves on water pipe system and
drain plug in DVM CHILLER when draining water.
(Refer to page 66 for place of drain plug.)
- Product may get damage by water inside the
water pipe and water side heat exchanger
freezing during winter time.
- To prevent corrosion inside the pipe, dry by
air blowing or charge inert gas. Contact the
merchandise or service center for further details.
- For pump integrated models, drain water in the
pump also.
Cut-off the power supply after draining water.
- Pump may operate for protection even there is
no water when power is supplying, and it may
cause pump malfunction.
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