Maintenance; Daily Inspection; Periodic Maintenance - Carrier 16LJ-F Series Operation Manual

5. MAINTENANCE

5-1. DAILY INSPECTION

If you find an abnormal condition, contact a service agent.
(1) Abnormal noise of absorbent pump and refrigerant pump.
Consult the plant management company for the following items.
(2) Cleaning of the cooling tower and the strainer of the cooling water line.
(3) Check of the cooling tower condition.
(4) Check of the air binding in the pipe line.

5-2. PERIODIC MAINTENANCE

To use the chiller in optimum performance, it requires periodic service such as purging, refrigerant blow
down and absorbent control, etc. We recommend you to make a maintenance contract with the service
agent.
5-2-1. Purging
The air of the machine inside not only decreases cooling capacity but also has a bad influence on the
life of the machine. Please leave it to service personnel under the maintenance contract. The
customer can carry out the purging, but should follow the instructions of our service personnel.
Purging procedure
The opening / closing condition of each valve:
V1: Close, V2: Close, V3: Close, B valve: Open
a) Turn on the purge pump on/off switch on the control pane.
b) Close B valve
c) Open V1 and V2.
d) Press "▲" key on the operation board once to indicate 21. Check the purge tank pressure
(refer to section 4-4-3) and confirm whether the indicated value drops below 0.5kPa. If it does
not drop, close V1 and V2, and contact the service agent.
e) Open B valve
f) Perform purging for 10 minutes. Even if the purge indication lamp goes out within 10 minutes,
continue purging for 10 minutes. When the lamp does not go out, continue purging until the
lamp goes out.
g) Close V2 and open V3
h) After 30 minutes from g), close V3
i) After 30 minutes from h), close V1.
j) Turn off the purge pump on/off switch.
k) Check again the opening / closing condition of each valve.
5-1