User Guide

Installation
7/16
(11)
13/16
(24)
Two 10-32 UNF-2B
Mounting Holes
3/16 (5)
Hole for
No. 10 Screw
5/16
(8)
3/16 (5) x 3/8 (10)
Slot for No. 10 Screw
1-1/8 (29)
7/8 (22) Conduit Hole
1-1/8
(29)
Opening for
wiring harness cable
1
(25)
3-5/16
(85)
5-11/16 (145)
3-7/16 (87)
12011012_3.cdr
Figure 3: Control Dimensions, in. (mm)
3-3/8 (86)
1 (25) Hex
9/16 (14)
P400AD-1 and
P400AD-2
Switch
M20 x 1.5 Thread
2-7/8 (73)
1 (25) Hex
9/16 (14)
P400BD-1
Switch
5/16 (8)
Wiring Harness
for Switch
12011012_4.cdr
3/4-16 UNF
2A Thread
Figure 4: P400 Switch Dimensions, in. (mm)
Mounting
Mount the P545 Control
Use the mounting holes shown in
Figure 5 for
mounting the control on a flat vertical surface. Two
No. 10 screws are provided for this purpose. Do not
use longer screws, as damage to internal components
may occur. Mount the control in an upright position,
and avoid warping or bending the case.
Use the Universal Mount (Part No. 271-51) to mount
the control to a vertical or horizontal surface. This
requires two 10-32 UNF-2B screws (not included).
Mounting Holes for a
Flat Vertical Surface
No. 10 Screws
(2 provided)
Universal Mounting
Bracket (UMB)
10-32 UNF-2B Screw
(not provided)
12011012_5.cdr
Mounting Holes
for UMB
Figure 5: Mounting the P545 Control
Mount the P400 Switch
If you modify an existing refrigeration compressor to
accept the P400 switch, it may involve installing a
sensor block (such as a Johnson Controls®
CST29A-600C) or other part. For proper installation,
follow all procedures recommended by the compressor
manufacturer.
To mount the P400 switch:
1. Wet the switch nozzle and gasket with oil.
2. Fit the gasket over the nozzle as shown in
Figure 6.
3. Install the switch in the lube oil port according to
the compressor manufacturer’s instructions.
4. Hand-tighten the switch until the surfaces of
gasket and compressor housing meet.
5. Use a torque wrench to tighten the sensor until
sealed (40 lb⋅ft recommended torque).
4 P545 Series Electronic Lube Oil Control Product/Technical Bulletin