Rockwell Automation 20L-LL PowerFlex 700L Liquid-to-Liquid Heat Exchanger User Manual
Page 17
Installation
1-7
PowerFlex 700L Liquid-to-Liquid Heat Exchanger User Manual
2. Using a backup wrench on the drive loop or drive fitting, tighten the
swivel nut fitting by either of the following two methods:
– Hex flats from wrench resistance method (recommended): one (1)
hex flat from wrench resistance.
– Torque method: 103 to 109 N-m (or 76 to 81 lb.-ft.).
Figure 1.3 Connecting Drive Side Hose
Figure 1.4 Connecting Heat Exchanger Side Hose
Supply Loop (from Heat Exchanger to Cooling Liquid Source)
The use and choice of connections for the supply loop is the user’s
responsibility. However, brass or stainless steel fittings must be used to
prevent corrosion on the inside of the heat exchanger. The pipe connections
for the supply loop are 1-inch NPT. Note that the heat exchanger has a
1-5/8" Wrench Flats
Hose
Swivel Nut
1-1/2" Wrench Flats
37˚ Flare Fitting
Do not use
Backup Wrench
on fitting locknut
Backup Wrench
(use to prevent twisting
during swivel nut tightening)
DRIVE SIDE
(INLET or OUTLET)
TO HEAT EXCHANGER
1-3/8" Wrench Flats
Hose
Swivel Nut
1-1/2" Wrench Flats
37° Flare Fitting
Backup Wrench
(use to prevent twisting
during swivel nut tightening)
HEAT EXCHANGER SIDE
(INLET or OUTLET)
NOTE: If connecting heat exchanger
p/n 20L-LL13K-P75 to a Frame 3A
drive, you must remove the 3/4-inch
elbow and replace it with the 1-inch
elbow listed on
.