Siemens SP-37 Maintenance and service guide

1
Installation & Maintenance
Power Line Surge Protector
Model SP-37
INTRODUCTION
The SP-37 is a secondary surge protector
des i gned to be mounted on a load center at the power
service entrance . It offers a gap-type arrestor and is easily wired into exis t i ng systems . It has
no exposed
terminals.
INSTALLATION
The SP-37 must be mounted horizontally as shown.
•Never mount the SP-37 vertically .
The arrestor may not "clear" properly if mounted in the vertical
position.
•The SP-37 should never be mounted w i th the
vent holes obstructed.
•This un i t is only for use in areas protected from the
weather, such as inside a bungalow or equipment ca se .
•Never install on the "line" side of a branch breaker on a load
cen t er.
WHITE
022701-29X
BLACK
010900-53X
RED
010802-7X
Siemens Industry, Inc., Rail Automation
2400 Nelson Pkwy.,Louisville KY
I&M 010836-7
Revised 11/95, 6/00, 8/14
Doc. No.: SIG-00-00-09 Version A.1

Doc.
Version:
2
PROCEDURES
WARNING
HIGH VOLTAGES ARE PRESENT. TURN OFF POWER
BEFORE INSTALLATION OR
SERVICING .
The use of temporary ground dur i ng installation and maintenance is recommended.
1) Install one washer over the threads at the end of the SP-37
housing . Push the washer up
against the housing .
2) Choose a knockout in the load center that is a distance from the backboard that
will allow
the back of the SP-37 to lay flat against the backboard .
3) Install the second washer on the threads at the end of the SP-37 housing from
inside the
load center. Install the lock nut so that i t loosely holds the SP-37 in place.
4) Use the wood screw provided to secure the SP-37 mounting tab to the
backboard .
5) Tighten the lock nut installed in step 3 for a snug
fit.
6) Cut the wires on the SP-37 to the
m i nimum usable length. Do not coil the wires as this
greatly reduces SP-37 performance. Also, avoid kinks and sharp bends in the wiring .
7) Connect the wires to the load center, observing the proper hook-up
scheme.
8) The wires must be connected so that there is a fuse or circuit breaker between the
SP-37
and the power service line .
HOOK UP
SCHEMES
NOTE: 1) 20 amp maximum current for each
SP-37
2) Do not use SP-37 in a circuit with voltage of more than 120 V
rms .

Doc.
Version:
3
MAINTENANCE
The SP-37 requires no regular
maintenanc e . Over time, with repeated surges, the
power-line protector inside will become damaged . It can be inspected visually through
the clear
plastic housing and, if blackened or burned, should be replaced as described
below.
CAUTION
DO NOT INSERT ANY OBJECTS INTO THE VENT HOLES OF
THE
SP-37.
SERVICING
The
power-line protector can be replaced as follows:
1) Turn off all power to the load center at the main
breaker . Make sure power is of f .
2) Disconnect the SP-37 wires from the load cente r .
3) Remove the two screws holding the cover on the
SP-37 .
4) Remove the nuts holding the protector in place and remove the
protector .
5) Install the new
protector.
6) Reinstall nuts removed in step 4 and tighten nuts to hold the new protector in
place.
7) Reinstall the cover and secure with the screws removed in step
3.
8) Reconnect the SP-37 wires to the load
center - observe correct hookup.
9) Restore power to the load
center.
REPLACEMENT
PARTS
To Order: Specify Description and Part
Number
Item
No.
Part
No.
D escription
Qty.
1
010836-1
Protector H ousing
1
2
0 223 12 - 11 - 7X
Wire 12 Ga. Black x 24" w / T erminal
1
3
022312-18-2X
Wire 12 Ga.White x 28"wiT erm inal
1
4
022312-9-1X
Wire 12 Ga. Red x 23" w/Terminal
1
5
010836-5
Rubber Grommet B ushing
1
6
02270 1- 29X
Power Line Protector
1
7
023690-1 4 A
B eve l ed Washe r
6
8
023690-14
Cal mp Nut
7
9
010900-53X
150 Volt Varistor Assembly
1
10
01000 1 -9
1 / 2 ID Rubber Grommet
1
11
010802- 7 X
Choke Coil Asse m bl y
1
12
18-00-090
Wire Marker " I n "
1
1 3
18-00-091
Wire Marker "Out"
1
14
010836-2
Box Cover
1
15
5283
Tap Screw Phil #8 x 1 /2
2
16
010836-3
Warning L abe l
1
17
010837-4
Part ID L abel
1
18
7152
Loc Nut 3/4"
1
19
1742-SC
Flat Washer 1 x 2-1/2
2
20
5733 -R SC
Wood Screw RD #10 x 1-1/4
1
21
2355
Wire Nut Type Y
1