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O-CU06-DEC14-1
All specifications are subjected to change by the manufacturer without prior notice.
The English text is the
original instruction. Other languages are the translations of the original instructions.
21
11. Appendix
NO.
Description
Record
1
Is the unit in good condition and without any visible damage?
⧠
Yes
2
Has the unit been transported in upward position?
⧠
Yes
3
Is the crankcase oil level between ¼ and ¾ of the compressor sight glass?
⧠
Yes
4
Is the power supply on site in line with the unit specification?
⧠
Yes
5
Is air short circuit and/or air blockage avoided?
⧠
Yes
6
Is the location well ventilated?
⧠
Yes
7
Is there sufficient space for air flow and maintenance?
⧠
Yes
8
Is all the pre-charged nitrogen released before the field pipe connection started?
⧠
Yes
9
Has nitrogen been blown through the pipes during brazing?
⧠
Yes
10
Is there only 1 indoor unit connected to the CDU?
⧠
Yes
11
Does the field piping has the same diameter as the pipes coming from CDU?
⧠
Yes
12
Is the suction pipe insulated?
⧠
Yes
13
Does the bends have enough bending radius?
⧠
Yes
14
Is the total pipe length less than 25m?
⧠
Yes
15
Is the height difference within the specifications [refer page 7]
⧠
Yes
16
Are the oil traps in the vertical suction line correctly positioned? [refer page 3]
⧠
Yes
17
Does the CDU capacity matches the indoor unit capacity?
⧠
Yes
18
Does the TXV capacity matches the indoor unit capacity?
⧠
Yes
19
Is the TXV sensing bulb fixing in good position/condition?
⧠
Yes
20
Is there a MOP expansion valve installed? [refer page 3]
⧠
Yes
21
Was inert, dry gas (e.g. Nitrogen) used when pressure testing?
⧠
Yes
22
Could the leak test pressures be reached?
⧠
Yes
23
Did the test pressure stayed stable after at least 24 hours?
⧠
Yes
24
Could the vacuum condition (< -0.1 barg for 2 hours) be reached?
⧠
Yes
25
Did the pressure stayed stable for at least 1 hour, when turning off the vacuum
pump?
⧠
Yes
26
Is the high/low pressure safety on the pressure switch set correctly? [refer page4]
⧠
Yes
27
Is the fan speed controller set correctly? [refer page 4]
⧠
Yes
28
Is the correct circuit breaker been used?
⧠
Yes
29
Is there an earth connection foreseen?
⧠
Yes
30
Are all terminal connections good/tight connected?
⧠
Yes
31
Is the crankcase heater been energized for minimum 12 hours before start up?
⧠
Yes
32
Is the refrigerant correct for intended use?
⧠
Yes
33
Is the high pressure above the minimum limit when charging the system? [refer page 5]
⧠
Yes
34
Is the refrigerant charge amount correct (clear sight glass)?
⧠
Yes
Remarks: the system may only be started up if all questions can be answered with “Yes”.
CHECKLIST BEFORE START-UP