RWF ROTARY SCREW COMPRESSOR UNITS
NOTES
S70-600 IOM (OCT04)
Page 59
interposing relay, 11
K
keyway setscrews, 5
L
leak test, 22
level-control method, 8
liquid feed solenoid, 16
liquid injection, 16
Liquid Injection Oil Cooling, 20
liquid injection strainer, 23
liquid injection system, 7
liquid injection thermovalve, 23
liquid injection valve, 7
Liquid refrigerant, 6
liquid supply service valve, 23
low receiver level, 30
M
Maintenance
condensed refrigerant, 30
disconnect switches, 21
dry nitrogen, 21
liquid injection valves, 21
oil filters, 21
oil heater circuit breaker, 21
premature bearing failure, 21
Servicing the Cold-Start Valve
bonnet, 30
Bonnet Cap Screw Torque Values, 31
valve body, 30
valve housing, 30
slugging, 21
stop valve, 30
suction accumulators, 21
suction strainer, 21
vibra tion level, 21
maintenance, 21
main oil filter, 22
manual solenoid, 23
manway bolts, 20
manway cover, 23
metering valve, 16
microprocessor control system, 11
micro enclosure, 6
Mixing of oils, 5
mixing valve, 7
motor alignment, 5
motor bearings, 20,28
Motor cycling, 10
Motor Replacement, 39
motor starter packages, 10
movable slide stop, 15
movable slide valve, 15
Moveable slide valve, 13
MSS solenoid valve, 15
N
needle valve, 15
nitrogen charge, 5
normal charging level, 6
nuisance oil level cutouts, 22
O
Oil-entrained refrigerant, 22
oil-side piping, 7
oil coolers, 16
Oil distillers, 6
oil filter, 6
oil filter cartridges, 23
oil heaters, 6
Oil heat of rejection, 6
Oil Level Transmitter, 33
oil pump, 13,23
Oil Pump Coupling, 5
oil pump starter, 11
Oil quality, 28
oil seal, 13
oil strainer elements, 23
Oil temperature, 6
oil temperature alarm, 17
oil temperature control, 6
Operating Log, 29
Operating Log Sheet, 52
outlet service valve, 22
P
plate and shell oil cooler, 6,8
potentiometer, 32
power fluc tuations, 11
pressure regulating valve, 17
Prestart Checklist, 53
Proper Installation Of Electronic
Equipment, 49
Contact arcing, 51
electromagnetic interference, 49
ground loop currents, 49
point-to-point wiring, 49
power feed circuit, 49
pump-out connection, 19
pump head, 24
purge valve, 22
P & I DIAGRAM, 40
R
Recommended Spare Parts, 57
refrigerant isolation valves, 7
refriger ant vapor, 13,22
regulating control transformer, 11
rigging, 4
rotors, 13
S
SBC, 31
SBC Board, 10
scaling rates, 8
ScrewSelect™, 20
self-lubricating, 13
separator, 5
service valve, 23
service valves, 24
setpoint, 12
SGC compressor, 15
shunting device, 11
shutdown cycles, 6
sight glass, 6,14,23,24
slide stop, 13
slide valve, 13,32
Slide Valve Position potentiometer, 32
Sola®, 10
solenoid, 23
solenoid valve, 7,8
solenoid valves, 15
start-up, 14
Start-up Report, 54
start-up, 20
starter package, 10
Starter Wiring Diagram, 10
stop valve, 23
strainer, 8,23
strainer basket, 23
strainer elements, 23
strainer inlet service valve, 22
suction check valve, 19
suction check valve bypass, 14
suction service valve, 23
suction superheat, 29
suction valve, 23
superheating suction gas, 13
system suction pressure, 14,19
T
temperature-regulating valve, 38
Adjustment, 38
direct acting valve, 38
reverse acting valve, 38
Sensing Bulb, 38
Stroke Adjustment, 38
valve plate, 38
tempera ture control valve, 16
temperature sensor, 16
Temperature Transmitter, 33
Thermal Expansion Valve, 17,20
thermal expansion valve, 29,37
thermosyphon oil cooler, 7
Thermosyphon oil cooling, 6,16
thermowell, 7
three-way oil temperature valve, 8
throttling valve, 14
timer relay, 10
torque analysis, 10
transducer, 31
transmitter unit, 33
Troubleshooting
excessive noise and vibration, 34
gradual oil loss, 34
high oil temperature, 35
low oil temperature, 35
noise and vibration, 36
oil pressure fluctuates, 36
oil pressure rapidly drops, 36
oil temperature fluctuates, 35
rapid oil loss, 34
shaft seal leakage, 34
slide stop, 35
slide stop will not move, 34
slide valve, 35
slide valve wil not move, 34
tunnel, 5
two-pass oil coolers, 6
U
UPS power system, 10
V
variable setpoints, 20
vibration analysis, 20,28
Vibration Data Sheet, 56
voltage, 31
volume ratio, 15
volume ratio control, 13
volume ratio Vi, 15
VOLUMIZER®, 13
VOLUMIZER® Transmitter, 33
W
water-cooled oil cooler, 8,30
Water cooled oil cooling, 16
water regulating valve, 8
Wiring Harness, 44
wiring harness, 32
wye-delta applications, 11