INSERT-AIR-SYSTEMS

NOTES: 1. ALL CONTACTS IN THE DIAGRAM ARE SHOWN WITH THE SYSTEM DE-ENERGIZED AT ATMOSPHERIC PRESSURE. SW# 1 CONTACT 1-2 : CLOSES AT 0.25 PSIG & ABOVE. CONTACT 1-3 : CLOSES AT A PRESSURE OF 0.25 PSIG OR BELOW, SENDING AN ALARM, IF MONITORED. SW# 2 CONTACT 6-4 : CLOSES AT 5.5 PSIG & BELOW. CONTACT 6-5 : CLOSES AT A PRESSURE OF 5.5 PSIG OR ABOVE, SENDING AN ALARM, IF MONITORED. SW# 3 CONTACT BLU-BLK : N.C., OPENS AT 200.0 PSIG CONTACT RED-BLK : N.O., CLOSES AT 200.0 PSIG

NO LO C NO HI TRANS. TANK ALARMS 1 2 3

NITROGEN STORAGE ALARM

TRANS. TANK STOR. TANK

L1 N 120 N G HEATER SUPPLY POWER (VAC)

(4-20mA)

(4-20mA)

NO C NC + - + -

6 7

9 10 11 12 13 14 15

8

4 5

GR

GR

BLK

RED

12

1 1 BLK BLK

5

SW# 2

4

6

2

RED

BLK

BLU

NO C NC

NC C NO

5.5 PSI

5.5 PSI

2

PS1

SW# 3

HIGH PRESS

2 1 3

ALARM ENABLE SWITCH

BLIZZARD 60W PTC HEATER

.25 PSI .25 PSI

NO C NC

LOW PRESS

PG1

SW# 1

WIRING DIAGRAM

SHEET 2 OF 2