JOHNSON CONTROLS
45
SECTION 2 - PRE-STARTUP AND SYSTEM OPERATING PROCEDURES
FORM 160.67-O2
ISSUE DATE: 10/9/2020
2
Ring Oil Lubrication
The oil level gauge on the side of the bearing housing
indicates the oil level. A mark inscribed on the low-
er-half bearing housing indicates the proper oil level.
Oil levels in both bearing housings should be checked
daily. Always use a strainer when adding oil to the sys-
tems and cover the fill connection when finished. If
there is any reason to suspect water in the oil, open the
low point drain in each bearing housings slightly. If
water is present, it will be the first thing to come out
of the drain. Low point drains in the bearing housing
should be checked weekly for water.
The presence of oil in the constant level
oilers does not necessarily mean that oil
in the bearing housings is at the proper
level. CLEANLINESS is ESSENTIAL
for long and trouble free service from
the BEARINGS. Care must be taken to
ensure that no foreign material enters
bearing housings or constant level oilers
when performing maintenance, checking
oil, adding oil, or making adjustments.
Pressure Lubrication
Always keep the proper oil level in the sight gauge on
the oil reservoir that is an integral part of the turbine
base. The system must supply continuous lubrica-
tion to all contact surfaces. The Oil Level Should Be
Checked At Least Once A Day Or Every 8 Hours If
The Turbine Operates 24 Hours A Day. Normally, a
small amount of oil (of the recommended type and vis-
cosity) should be added between oil changes to main-
tain the proper oil level. Always use a strainer when
adding oil to the systems and cover the fill connection
when finished.
Water gives oil a milky appearance, and it
has a tendency to settle at the bottom of the
reservoir when the turbine is not running.
If there is any reason to suspect water in
the oil, open the reservoir drain slightly. If
water is present, it will be the rst thing to
come out of the drain. Refer to SECTION
4 - OPERATIONAL MAINTENANCE to
determine the possible cause and proce-
dure to follow.
13. Observe if steam is venting from gland leak-o
line. If the amount of steam is excessive and con-
denssate is draining from the exhaust end gland,
the seals should be replaced.
14. Observe supply pressure from pressure reducing
valve for air in bearing seal air purge piping to
bearing housings.
Weekly
1. Check the refrigerant charge. (See “Checking The
Refrigerant Charge”, Section 6 of this manual.)
2. Leak check the entire chiller.
3. Check the KD Turbine Auxiliary Oil Pump Op-
eration.
4. Check the compressor oil pump operation.
5. Test the KD turbine manual overspeed trip valve.
To do this, use the SOFT SHUTDOWN key and
allow the control panel to unload the chiller. Then
use the hand trip knob (See Figure 12 on page
54) to manually activate the 3 way Trip Valve
and shutdown the turbine.
6. On KG turbines check the low point drains in the
bearing housings for presence of water.
7. Check the shafts for dirt, oil, or grease buildup.
8. Check the water seal ring on the steam condenser
relief valve.
9. Check the liquid ring vacuum pump on the steam
condenser package.
Monthly
1. Test the turbine mechanical overspeed trip device
by slowly running the turbine up to 110% of de-
sign maximum speed. See the OptiView™ Con-
trol Center Operation manual, form 160.67-O1
for the Overspeed Test Procedure using the Auto/
Manual Screen.
2. On the KG steam turbine, (has no oil lter),
change the oil in the bearing housings monthly,
more often if oil analysis indicates a need to, or if
it is suspected contaminants have gotten in the oil.
3. Check Hotwell Condensate Pump and Operation
4. Check Hotwell Condensate Pump seals.
5. Check Hotwell liquid level and operation of con-
trol valves.
Quarterly
1. Perform chemical analysis of oil for KG turbine
models.
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