General information
Refrigeration Division
Grasso
Subject Feature refer to chapter:
Oil viscosity
≥ 10 cSt during operation at location of bearings
Direction of rotation of compressor drive shaft Counterclockwise when facing shaft end A2.6
Operating limits and switch settings
(for values between [ ] brackets refer to the Instruction Manual of the Monitron)
Timers Time interval refer to chapter:
Switching frequency max. 6 starts per hour A2.10.1
Time interval between stopping and re-starting min. 2 minutes A2.10.2
Time interval between starting and re-starting min. 10 minutes A2.10.2
Time interval between unloading and loading min. 3 minutes B1.2
Oil system limits Value
Oil level 25 - 75% crankcase sight glass B4
Min. oil temperature
warmer than surroundings and ≥ 20 °C (68 °F)
for NH
3 and ≥ 30 °C (86 °F) for halocarbons
A2.8
Max. oil temperature [max. Toil] see oil selection table in the appendix section B1.2
Lubricating oil pressure difference [min dOil] between 1.5 and 2.5 bar
Setting approx. 1.8 bar
A2.5.2
Temperature and pressure limits Value
Max. discharge temperature [max Tdis] 155 °C (311 °F) B1.2
Pdischarge - Psuction
< 24.0 bar
Superheat [dTo]
≥ 5 K
Cooling water inlet temperature of cylinder
head cooling system
≥Tcond + 10 K
Pressure safety limits A2.5.2
GENERAL INFORMATION AND SURVEY
OF SETTINGS AND LIMITS
v001.99.01.en Installation and Maintenance Manual RC(U)6 IX
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