SECTION 5 – INSTALLATION
PAGE 5-16 REV. 0 2014-APR-30
CHECKFIRE 110
Detection and Actuation System
VEHICLE SYSTEM PRESSURE SWITCH (Continued)
Pressure Switch Reset
2. To reset pressure switch, press the red plunger located on
the back of the switch. An audible click should be heard.
See Figure 5-49.
Connection of 4-Conductor Cable
3. A Pressure Switch Connector Kit (Part No. 440086) is
provided with each switch to ensure adequate weather-
proofing of electrical connections associated with the pres-
sure switch. The following components from that kit will
be required to complete the installation of the 4-conductor
cable (see Figure 5-49):
• Two Strain Reliefs
• One Splice Body
• Three 22-18 AWG Butt Splice Terminals
Note: The 3-conductor cable and the field cable wiring may
also be wired and enclosed within a weather-proof electrical
box (not supplied) using weather-proof fittings appropriate
for the cable size. The allowable cable outside diameter is
0.08 in. (2 mm) minimum and 0.24 in. (6 mm) maximum.
a. Begin by trimming 3 conductors on the pressure switch
to a length of 3/4 in. (19 mm) from the end of the outer
jacket. Trim the outer jacket on the equipment cable to
the same length. Note: Brown conductor is not used in
this application.
b. Strip 1/4 - 3/8 in. (6 - 10 mm) of insulation from each
conductor in both cables.
c. Loosen the lock nut on the strain relief connectors and
slide both the lock nuts and connectors over the ends of
both wires.
d. Slide the enclosed splice body over the end of one of the
cables.
NOTICE
Before performing the next step, double
check the equipment and pressure switch
wiring to ensure the proper connections
are being made for your intended appli-
cation. Refer to the pressure switch
wire color-coding for proper terminal
designation.
e. Using the supplied 22-18AwG Butt Splice Terminals,
crimp the splices onto each pressure switch wire
being used. Once complete, crimp the splices to the
corresponding equipment wiring.
PRESSURE
SwITCH
STRAIN
RELIEF
STRAIN
RELIEF
RESET
PLUNGER
SPLICE BODY
EqUIPMENT
CABLE
PRESSURE
SwITCH
CABLE
22-18AwG
BUTTSPLICE
CONNECTORS (3)
FIGURE 5-49
WIRE SPLICING
009255
f. Once crimps are complete, apply Dow Corning 737
sealant (or equivalent) to strain relief threads going into
splice body.
g. Securely tighten the one strain relief into the splice body.
Note: Do not tighten the compression nut onto the
wire at this time.
h. Slide the splice body assembly near the recently crimped
butt splice terminals. Fill the splice body approximately
half full with Dow Corning 737 sealant (or equivalent)
and pull the splice body assembly over the terminals so
the terminals are located approximately halfway inside
the splice body. This should result in the terminals being
enclosed in the sealant.
i. If needed, fill the remainder of the cavity with sealant.
j. Apply Dow Corning 737 sealant (or equivalent) to the
thread on the unattached strain relief lock nut and thread
this strain relief assembly into the splice body.
k. with a wrench on both strain relief locks, simultaneously
tighten both ends.
l. Complete the assembly operation by securely tightening
the strain relief to both the pressure switch and equip-
ment cables. See Figure 5-50.
FIGURE 5-50
CONNECTOR KIT INSTALLED
009178
4. For PRESSURE SWITCH FEEDBACK: Make connections
to a field-wireable on the vehicle.
Содержание CHECKFIRE 110
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Страница 6: ...REVISION RECORD PAGE 2 REV 0 2014 MAY 01 NOTES CHECKFIRE 110 Detection and Actuation System ...
Страница 22: ...SECTION 3 USER INTERFACE PAGE 3 4 REV 0 2014 APR 30 NOTES CHECKFIRE 110 Detection and Actuation System ...
Страница 68: ...SECTION 7 IN CASE OF FIRE PAGE 7 2 REV 0 2014 APR 30 NOTES CHECKFIRE 110 Detection and Actuation System ...
Страница 84: ...SECTION 9 TROUBLESHOOTING PAGE 9 10 REV 0 2014 APR 30 NOTES CHECKFIRE 110 Detection and Actuation System ...