RXF ROTARY SCREW COMPRESSOR UNITS
MAINTENANCE
070.410-IOM (JAN 12)
Page 30
MAINTENANCE SCHEDULE
This schedule should be followed to ensure trouble-free operation of the compressor unit.
FREQUENCY OR HOURS OF OPERATION (MAXIMUM)
MAINTENANCE
200
1000
5000
8000
10,000
15,000
20,000
25,000
30,000
35,000
40,000
45,000
50,000
55,000
60,000
65,000
70,000
75,000
80,000
85,000
90,000
95,000
Change Oil
As Directed By Oil Analysis
Oil Analysis
n
Every 6 Months
Replace Filters
n n n n n n n n n n n
Clean Oil Strainers
n n n n n n n n n n n
Clean Liquid Strainers
n n n n n n n n n n n
Replace Coalescers
n n n
Check and Clean Suction Strainer
n n n n n n n n n n n
Check Coupling (a)
n
Annually Regardless of Operating Hours
Suction & Disch Flange Bolts (d)
n n n n n n n n n n n n n n n n n n n n n n
VFD Units Check Skip Freq. (f)
n n n n n n n n n n n n n n n n n n n n n n
Check Electrical Connections (b)
n n n n n n n n n n n n n n n n n n n n
Check Sensor Calibration (c)
n n n n n n n n n n n n n n n n n n n n n
Vibration Analysis (e)
n
Every 6 Months, More Frequently If Levels Increase
Replace Shaft Seal When Leak Rate Exceeds 7 - 8 Drops Per Minute
a. Check bolts, shim packs, center inserts, keys, and all bolt torques.
b. Check and torque all terminals in the processor and starter panel per the specication posted in the enclosure.
c. Check calibration of Slide Valve, Slide Stop, pressures and temperatures. Calibration should be conducted with NIST certied devices.
d. Verify tightness of bolts on suction and discharge anges. See table below for torque requirements.
e. Vibration measurement must be carried out continuously to obtain optimum preventative control on bearings. If not continuously controlled,
then every 6 months, more frequently if levels increase.
f. Units with varible speed drives - check for excess vibration and skip frequencies any time unit operating conditions change.
1. Based on metal to metal contact.
2. Based on: Gaskets: Garlock
®
Blue-Gard
®
3300; Bolts: class 8.8 or stronger hex head bolts, lightly oiled and clean
12, 15, 19 XJF 95S,M,L 1/2 or 5/8 58 M20 X 2.5 107
24, 30, 39, 50 XJF 120S,M,L,S 1/2 or 5/8 58 M20 X 2.5 150
58, 68, 85, 101 XJF 151A,M,L,N 5/8 or 3/4 144 M22 X 2.5 167
NOTE: The Frick oil charge shipped with the unit is the
best suited lubricant for the conditions specied at the
time of purchase. If there is any doubt due to the refriger-
ant, operating pressures, or temperatures, refer to Frick
Oil publication 160-802 SPC for guidance.
1. Only use Frick
®
oil lter elements or warranty claim
may be denied.
2. Participate in a regular, periodic oil analysis program to
maintain oil and system integrity. Oil Analysis Kit part num-
ber: 333Q0001853.
3. Oil samples for analysis should be taken after the oil
lter. A ¼" purge valve is provided between the lter and
compressor.
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