Installation; Torque Specifications; Proper Grounding Of Cables - BTEK T419S Service Manual

1.2 Installation

NO USER SERVICEABLE PARTS. REFER TO QUALIFIED SERVICE
PERSONNEL FOR SERVICE.

1.2.1 Torque specifications

CAUTION: The acorn nuts holding the back plate of the indicator in place must
each be tightened, in multiple passes, in the following pattern to a final torque
of 0.68 N-m (approximately 6 in-lbs) to ensure proper gasket sealing.
There are four sizes of strain reliefs exiting the indicator: PG11, PG7, PG13.5 and NPT
3/4". The torque specifications for the locknuts which hold the strain reliefs to the
indicator housing and the specs for the dome nuts which seal the cable that passes
through the strain relief are shown in the table below.
The vent in the back cover should be torqued between 5.3 and 7.1 lb-in (0.6-0.8 N-m).

1.2.2 Proper grounding of cables

On the stainless steel desktop models, cable shield wires should be grounded directly
to the studs provided at the bottom of the enclosure, close to the strain relief entry point,
with wire lengths at a minimum. On the aluminum and panel mount models the shield
wires should be connected to the SHLD connection on the corresponding terminal
block connectors.
T419S Indicator Service Manual
1
7
9
3
3/4" NPT
Strain Relief
44.2 lb-in
Dome Nut
5 N-m
66.4 lb-in
Lock Nut
7.5 N-m
5
11 13
Indicator back
plate
14 6 12
PG13.5 Strain PG11 Strain
Relief Relief
22.1 lb-in 22.1 lb-in
2.5 N-m 2.5 N-m
33.2 lb-in 33.2 lb-in
3.75 N-m 3.75 N-m
1.2 Installation
4
10
8
2
PG7 Strain
Relief
8.9 lb-in
1.0 N-m
13.3 lb-in
1.5 N-m
9