Table 36 - Maintenance And Inspection - York EX Series Installation, Operation & Maintenance Instructions Manual

FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017

TABLE 36 - MAINTENANCE AND INSPECTION

TASK
Recording of operation Collect the operation data (Refer to 155.31-CL1) and check the
data data with the data collected during the factory test.
Check of liquid level See Table 43 on page 168. Check the liquid level at each part.
See Refrigerant Refining Method on Page 134. Refine the
Refining of refrigerant
refrigerant.
Manual purging from See Purging Procedure on Page 130. Manually purge non-
purging tank condensable gas from the purging tank.
Manual purging from See Purging Procedure on Page 130. Manually purge non-
absorber condensable gas from the absorber.
Replacement of oil in
Replace the oil in the vacuum pump periodically.
vacuum pump
After the replacement of the lubricant oil for the vacuum pump,
Check of Vacuum Pump be sure to pull the pulley belt and check the smooth motion of
the pulley.
Check the outside of the unit for damage (e.g., leakage for
chilled/hot water and cooling water, rusting, etc.). Check the
Appearance check
solution pump and refrigerant pump for abnormal sounds and
vibration.
Measure the insulation resistance of the main circuit and motors
Measurement of
(solution pump, refrigerant pump) mainly to check for lowering
insulation resistance of
of insulation. When measuring the insulation resistance, be sure
electric devices
to disconnect the wires of the temperature controller, etc.
Check of terminals for
Check each terminal in the control panel for looseness.
looseness
Check of operation of Check the operation of the control panel to prevent troubles
control panel caused by malfunction of the control panel.
Check of capacity of See Purging Procedure on Page 130. Check the capacity of
purge unit the purge unit periodically.
Check of leakage through By measuring vacuum down speed, check for leakage through
purge solenoid valves purge solenoid valves.
Overhaul check of purge
Perform overhaul of purge solenoid valves periodically.
solenoid valves
Measure the quantity of non-condensable gas discharged from
Check of airtightness
the vacuum pump.
Check continuity of
Check continuity of protective bonding circuit
protective bonding circuit
Reliable water treatment companies are available in most
Analysis of quality of larger cities to supply a water treating process which will greatly
chilled/hot water, and reduce the corrosive and scale forming properties of almost any
cooling water type of water. Be sure to request the first analysis within one
month after the test operation is started.
C = Customer, S = Johnson Controls Service
JOHNSON CONTROLS
CONTENTS
SECTION 7 – MAINTENANCE
FREQUENCY SCOPE
Weekly C
Daily C
every 2-3 weeks S
Since, the machine
has an automatic
purge system,
perform it once at
S
beginning of the
seasons every year
and once per every
2-3 months.
every 2-3 months S
C
C
monthly
C
S
yearly
S
S
monthly S
S
yearly
S
every 2-3 months S
yearly S
every 2-3 months C
145
7