Table of Contents
Advertisement
3.4 - Check of control board safety and switch settings
•
Generator pressure gauge (63GH)
•
Purge tank pressure sensor (69PR)
•
Absorbent pump thermal relay (51A)
•
Refrigerant pump thermal relay (51R)
•
Purge pump thermal relay (51P)
3.5 - Check of purge pump
•
No water in liquid trap : Yes ®
•
Oil quality
•
Oil quantity
•
Direction of rotation
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:
•
Cooling water inlet/outlet valves:
•
Hot water inlet/outlet valves:
Air vent valve, drain valve, pressure gauge, thermometer
Water circuit
Air vent
valve
Chilled water
Yes
No
Cooling water
Yes
No
Water pump duty
•
Chilled water pump
•
Cooling water pump
•
Hot water pump
Cooling tower
* For information only
Cooling water temperature control:
Fan on-off ®
2-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
Suction pressure (kPa/MPa)
Delivery pressure (kPa/MPa)
Current (A)
Capacity of a main breaker: _______________A
20
:
:
:
:
:
: Clean ®
: Good ®
: Good ® (as arrow on V-belt cover)
Open ® Closed ®
Open ® Closed ®
Open ® Closed ®
Drain valve
Pressure
Thermo-
gauge
meter
Yes
No
Yes
No
Yes
Yes
No
Yes
No
Yes
: ____________kW*
: ____________kW*
: ____________kW*
: ____________kW*
3-way valve®
Chilled water
Cooling water
_____________
___________
_____________
___________
_____________
___________
_______________kPa/MPa
_______________kPa/MPa
_______________A
_______________A
_______________A
No ®
Not cleaned ®
(or contains water)
Not good ®
Not good ®
3.7 - Bubble test (when the unit is charged)
•___________ml (cm
•___________ml (cm
•___________ml (cm
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 ®
Isolation valves
Valve open/close status should be as follows.
Absorption pump (open): ........ Open ®
•
No
No
•
Refrigerant pump (open): ........ Open ®
Diaphragm valves
Valve open/close status should be as follows.
•
Manual purge Valve V1, V2, V3 (closed):
Open ®
•
Refrigerant blow-down valve (closed):
Open ®
Service valves
Valve open/close status should be as follows.
•
Charge/remove N
Open ®
•
Purge unit: ..........................................SV2 (closed)
Open ®
•
Refrigerant: ........................................SV3 (closed)
Open ®
•
Diluted solution: .................................SV4 (closed)
Open ®
•
Concentrated solution: .......................SV6 (closed)
Open ®
•
Generator pressure gauge: ..................SV7 (open)
Open ®
Switch - purge (off): .......................................On ® Off ®
‡ Replace oil
‡ Add new oil up to the centre of
sight glass or remove oil.
‡ Transpose two power supply wires
)/10 min
3
3
)/10 min
)/10 min
3
Closed ®
Closed ®
gas: .......................SV1 (closed)
2
Closed ®
Closed ®
Closed ®
Closed ®
Closed ®
Closed ®
Closed ®
Closed ®
Closed ®
Advertisement
Table of Contents
