Pouring And Draining The Coolant - NEC NC1700L Installation Manual

Setting Up Your Projector and Chiller Unit

2-9. Pouring and Draining the Coolant

Coolant uses a dedicated NP-17AL01 (option).
WARNING
• Before pouring or draining, check that the main power switches of the projector and chiller unit are turned off. Pour or
drain the coolant with AC power shut off.
• Carefully read the contents described in this section before starting work and follow the proper procedure. Inappropriate
handling may cause fatal, serious, or other bodily injuries due to fire or electric shock.
CAUTION
• After the work, be sure to cover the filler inlet for coolant with the cap. Starting operation with the filler inlet for coolant not
covered with the cap may cause the coolant in the tank to spill from the filler inlet for coolant.
• If coolant decreases naturally, please refill pure water.
• Do not mix different brands of coolant.
• To replace the replenished coolant with new one, drain all old coolant and pour new one.
• Clean the tool used for replenishing the coolant thoroughly before using it so that no impurity is mixed in the coolant.
• Tighten the cap for the filler inlet for coolant by hand. Excessively tightening the cap using a tool may damage the filler
inlet for coolant or cap.
• The coolant replacement period of the water cooling machine is 3 years. Please periodically replace.
• In case of unopened, coolant is kept for 3 years. Please open the coolant when injecting. Also please discard the surplus
coolant after injection.
• Dispose of the coolant as industrial waste by a predetermined method by customers.
2-9-1. Pouring the Coolant
Preparation: NP-17AL01
Amount to coolant: Approx. 12 liters for a 5 m hose
Approx. 11 liters for a 2 m hose
1
Check the coolant flow meter.
Drain all old coolant and pour new one.
2
Remove the cap from the filler inlet for coolant and pour the coolant until the level reaches the
upper limit line of the coolant flow meter.
If coolant remains, discard the coolant. (See page 75)
Lower limit
3
Cover the filler inlet for coolant with the cap.
74
Upper limit
Check that the liquid level is between the
upper limit line and the lower limit line.
Check the liquid level once a week.