Instruction At Delivery - Hitachi RCUE40AG2 Service Manual

Test run

2.4. Instruction at delivery

2.4. Instruction at delivery

2.4. Instruction at delivery
When delivering the unit after test run, give an appropriate explanation to customers about operation method and
periodical maintenance method etc as well as the following items.
1. Apply the electricity to oil heater
Do not turn off the power source of unit during normal use in order that electricity is applied to oil
heater. In case of re-starting the unit after a long time, turn on the power 12 hours before operation
start. Oil heater avoids the damage of shaft and rotor, preventing the foaming of lubrication oil in
compressor at start-up. (Heats oil to approx. 40ºC)
2. If chiller unit is not used for a long time, drain the water out of pipes using water-drawing or air-drawing
plug.
3. Anti-freeze in winter
− To avoid freezing, which might damage devices or pipes, it is needed to be installed some insulation in pump
and water pipes.
− This chiller has a function to operate chilled (warm) water circulation pump automatically in case of
decreasing outside temperature during unit stop, therefore, do not turn off the power source during season.
In case of turning off, draw the water out of chiller unit.
4. In case of fi re,
Turn all power OFF
5. The unit will not display failure in spite of the following cases.
− During operation and after unit stop, if there is water fl owing noise. However, this is a refrigerant fl owing
noise, and it is not a failure.
− Compressor is not operated (fuses are out) although operation switch is ON while temperature controller is
being activated. This is not a failure, but operation is started when temperature control (Thermostat) turns
ON.
− In screw type chiller unit, there is a noise in the compressor rotors when it is stopped. Refrigerant is fl owed
back temporally, and this is not a failure.
6. The refrigerant used in this unit is incombustible, non-toxic and odourless safe. However, toxic gas is
produced when leaked refrigerant is exposed to fi re and oxygen will be lacked due to that refrigerants
gravity is higher than air. Therefore, in case that refrigerant is leaked or eye or throat are irritated, stop the
use of fi re, and ventilate well, then contact a distributor.
7. About operation method
Standard method of use is described in the operation manual attached with the product. Operation
method would be changed if special modifi cation were realized by request of the customers. Give a
clear explanation to the customers that it is necessary to contact a distributor or Customer Service
Centre of manufactures in case that operation, not described in the manual, must be performed.
8. For customers' continued safety
For customers' safety, give plain and suffi cient explanation and instruction to them about the contents
of "Please observe safety precautions fully" described in Installation Manual and "For safety use"
described the Operation Manual, and tell them to read them very carefully.
Cautions are divided into "Alarm" and "Caution":
"Alarm" includes cases where it is possible to lead to a dangerous result like death or severe injury.
Cases described in "Caution" may also lead a grave result depending on the situations. Therefore,
please read them carefully and follow the instruction.
Operation Manual should be kept where any user can reach.
pag. 27
SMGB0003 rev.0-01/2007
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