Line of Sight Infrared Hydrocarbon Gas Detector AutroPath HC800 , 116-P-HC800/IGB, Rev. A, 2016-03-03
P/N 95-8744, v4.2 , rev. 3/16
Autronica Fire and Security AS
Page 31
moDuLe RePLACemeNt PRoCeDuRe
Tools Required:
– 6 mm hex wrench (transmitter)
– 5/16 inch hex wrench (receiver)
– Torque wrench capable of accurately measuring 40
inch-pounds
1. Bypass system alarms as needed, then remove 24
Vdc power from the AutroPath HC800 detector.
2.
Transmitter
Remove the seven stainless steel flange bolts
using a 6 mm hex wrench. See Figure 26. Take
care to properly support the module as the last
flange bolt is removed.
Receiver
Using a 5/16 inch hex wrench, loosen the locking
set screw. Turn the retainer ring by hand to loosen
the module. See Figure 27.
3. Carefully remove the old module by extracting it
straight out from the bulkhead.
4. Ensure that the O-ring is present, undamaged, and
correctly seated in the groove. This O-ring is required
to maintain the watertight integrity of the AutroPath
HC800 housing.
5. Line up the pin on the replacement module with
the hole in the bulkhead and insert the module
straight into the bulkhead. See Figure 26 for the
transmitter and Figure 27 for the receiver.
6.
Transmitter
Insert and tighten the seven flange bolts in an
opposing consecutive order in two stages — first
partially tighten all seven bolts equally, and then
fully tighten each bolt in an opposing order to 90
in-lbs (10.2 N•m) maximum of torque. Bolts are
M8-1.25x 16M.
CautIon
Flange bolts are critical to maintaining the
fl ameproof properties of the AutroPath HC800. If
replacement fl ange bolts are needed, DeC spare
part number 012713-001 must be used in order
to maintain the integrity of the enclosure. The use
of any other bolts will void the ex d certifi cation of
the AutroPath HC800.
Receiver
Fully tighten the retainer ring on the receiver mod-
ule, then tighten the set screw to prevent the ring
from being turned.
FLANGE BOLT (7)
A2661
Figure 26—autropath Hc800 transmitter
RETAINER RING
A2662
LOCKING SET SCREW
Figure 27—autropath Hc800 Receiver
