20
3.7 - Bubble test
(when the unit is charged)
•___________ml (cm
3
)/10 min
•___________ml (cm
3
)/10 min
•___________ml (cm
3
)/10 min
Refer to the table in the chapter "Bubble test". Take measure-
ments several times to obtain the value given in the table.
3.8 - Verify valve opening status and switch position
Change-over valves
B-valve - in purge pipe (open): ....... Open
®
Closed
®
Isolation valves
Valve open/close status should be as follows.
•
Absorption pump (open): ........ Open
®
Closed
®
•
Refrigerant pump (open): ........ Open
®
Closed
®
Diaphragm valves
Valve open/close status should be as follows.
•
Manual purge Valve V1, V2, V3 (closed):
Open
®
Closed
®
•
Refrigerant blow-down valve (closed):
Open
®
Closed
®
Service valves
Valve open/close status should be as follows.
•
Charge/remove N
2
gas: .......................SV1 (closed)
Open
®
Closed
®
•
Purge unit: ..........................................SV2 (closed)
Open
®
Closed
®
•
Refrigerant: ........................................SV3 (closed)
Open
®
Closed
®
•
Diluted solution: .................................SV4 (closed)
Open
®
Closed
®
•
Concentrated solution: .......................SV6 (closed)
Open
®
Closed
®
•
Generator pressure gauge: ..................SV7 (open)
Open
®
Closed
®
Switch - purge (off):
.......................................On
®
Off
®
3.6 - Verify auxiliary equipment
(For confirmation purpose only)
Water piping
•
Chilled-water flow direction (inlet/outlet):
Good
®
Not good
®
•
Cooling water flow direction (inlet/outlet):
Good
®
Not good
®
•
Hot water flow direction (inlet/outlet):
Good
®
Not good
®
•
Chilled-water inlet/outlet valves:
Open
®
Closed
®
•
Cooling water inlet/outlet valves:
Open
®
Closed
®
•
Hot water inlet/outlet valves:
Open
®
Closed
®
Air vent valve, drain valve, pressure gauge, thermometer
Water circuit
Air vent
Drain valve
Pressure
Thermo-
valve
gauge
meter
Chilled water
Yes
No
Yes
No
Yes No
Yes
No
Cooling water
Yes
No
Yes
No
Yes No
Yes
No
Water pump duty
•
Chilled water pump
: ____________kW*
•
Cooling water pump : ____________kW*
•
Hot water pump
: ____________kW*
Cooling tower
: ____________kW*
* For information only
Cooling water temperature control:
Fan on-off
®
2-way valve
®
3-way valve
®
Water charge into the chilled-water circuit:
Yes
®
No
®
Water charge into the cooling water circuit:
Yes
®
No
®
Water charge into the hot water circuit:
Yes
®
No
®
Automatic cooling water blow-down device:
Yes
®
No
®
Chemical cooling water feeding device:
Yes
®
No
®
Check cooling water temperature control:
Good
®
Not good
®
Water circulating conditions:
Item
Chilled water
Cooling water
Suction pressure (kPa/MPa)
_____________
___________
Delivery pressure (kPa/MPa)
_____________
___________
Current (A)
_____________
___________
Capacity of a main breaker: _______________A
3.4 - Check of control board safety and switch settings
•
Generator pressure gauge (63GH)
:
_______________kPa/MPa
•
Purge tank pressure sensor (69PR)
:
_______________kPa/MPa
•
Absorbent pump thermal relay (51A)
:
_______________A
•
Refrigerant pump thermal relay (51R)
:
_______________A
•
Purge pump thermal relay (51P)
:
_______________A
3.5 - Check of purge pump
•
No water in liquid trap : Yes
®
No
®
•
Oil quality
: Clean
®
Not cleaned
®
‡
Replace oil
(or contains water)
•
Oil quantity
: Good
®
Not good
®
‡
Add new oil up to the centre of
sight glass or remove oil.
•
Direction of rotation
: Good
®
(as arrow on V-belt cover)
Not good
®
‡
Transpose two power supply wires
Содержание Carrier 16LJ Series
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