Page 390 - Subyek Teknik Mesin - Forsthoffers Best Practice Handbook for Rotating Machinery by William E Forsthoffer

Lube, Seal and Control Oil System Best Practices Be st Practice 7.5

10. Minimum reservoir free surface area: 1.3 Model ______________
2
2
¼ 232 cm /LPM of normal flow (0.25 ft. /GPM) 1.4 Action e direct or reverse ______________
1.5 Valve plug type ______________
¼ 0.25 (1)
2 1.6 Failure mode ______________
¼ ft.
1.7 Actuator size ______________
1.8 Actuator force available/force ______________
Confirm reservoir internals, material, etc. meet data sheet required
and specifications required. Review reservoir internal
1.9 Maximum valve C v ¼ ______________
drawing.
1.10 Operating C v min. (one pump dirty system) ¼ ______________
F. Reservoir heating requirements 1.11 Operating C v max. ¼ ______________
(two pumps clean system)
Type Electric Steam
Note: Operating C v s should be between 10% e 90% of valve max. C v .

Time to head oil from C( F) to _________ C( F) ¼
_________ _________ Sensing line pulsation snubber required? If so, confirm proper
Hours orientation. Confirm fast response is to open or close valve.
1. Calculated heat load ¼ _________kJ (BTU)
(minus reservoir H2. Transfer valve(s)
heat loss)
2. Heater size kJ/HR ðF1Þ 2.1 Make ______________
¼
(BTU/HR) Total time allowed ðhoursÞ 2.2 Model ______________
3. Electric heater max ¼ _____________ 2.3 Size ______________
watt density 2.4 Plus type e Taper, Straight, Globe ______________
2.5 Lifting jack required? ______________
Note: Confirm if heaters can be removed without draining reservoir. 2.6 Tight shut-off required? ______________
2.7 Max DP on changeover ______________
G. Supply pipe velocity
Maximum velocity 1.2e1.8 m/sec (4e6 ft/sec) H3. Temperature control valve(s)
Maximum console supply pipe velocity ¼ __________m/sec (ft/sec)
Maximum unit supply pipe velocity ¼ __________ m/sec (ft/sec) 3.1 Make ______________
3.2 Model ______________
3.3 Size ______________
H. Control valve sizing
3.4 Normal flow liters/min (GPM) ______________
H1. Bypass (back pressure) valve 3.5 Temperature range C( F) ______________

3.6 Valve max operating C v ______________
1.1 Type: self acting, pneumatic or electric ______________ (If 2-way valve, C v must be based on clean cooler)
controller
1.2 Make ______________ Note: Butterfly type valve often used for 2-way applications.

Fig 7.5.9 Reservoir levels and oil level glass
details

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