User Manual for BPS-2000
www.levitronix.com
PL-4021-00, Rev02, DCO# 15-235
3.4 Thermal Management
3.4.1 Motor Temperature
The motor temperature depends on the ambient and liquid temperature, as well as on the hydraulic
operation point and the characteristics (viscosity and density) of the liquid. Figure 21 illustrates the
temperature characteristics for aqueous liquids at room temperature. For higher liquid temperatures and
hydraulic operating points active cooling is recommended for example with the Air Cooling Module ACM-4.2
(see Figure 22).
Figure 21: Temperature curves for the LPM-2000.2 motor @ 25 C liquid temperature
(Temperature is measured inside of the motor, temperature of housing and sensor electronics is significantly below this temperature)
77
97
117
137
157
177
197
0 5 10 15 20 25 30 35
25
35
45
55
65
75
85
95
0 20 40 60 80 100 120 140
[°F]
[gpm]
[
0
C]
[lpm]
Ambient Temp = 25 C
Liquid Temp. = 25 C
Specific gravity = 1 g/cm
3
Viscosity = 0.7 cP
Temp. Time Constant = ~2 hours
Absolute Temperature Limit
Recommended Operational Limit
77
97
117
137
157
177
197
0 2 4 6 8 10 12 14 16 18 20 22
25
35
45
55
65
75
85
95
0 10 20 30 40 50 60 70 80
[°F]
[gpm]
[
0
C]
[lpm]
Ambient Temp = 25 C
Liquid Temp. = 25 C
Specific gravity = 1 g/cm
3
Viscosity = 0.7 cP
Temp. Time Constant = ~2 hours
Absolute Temperature Limit
Recommended Operational Limit
High-Flow System
Pump Head LPP-2000.6
High-Pressure System
Pump Head LPP-2000.7