KM-97 Flashcards
Helmet shall not be stored near heat source, or temps lower than ___ or higher than ____ degrees F.
0 degrees and 120 degrees F.
What is the helmet standalone maximum depth?
190fsw.
The helmet operates in temps ____ degrees or higher. ____ degrees if hot water shroud is installed.
37 degrees or higher, 29 degrees if hot water shroud is installed.
An EGS is mandatory at depths greater than ___.
60fsw.
When using a hand pump to check the gas supply non-return valve; After connecting hand pump to side block, pump to ____ inches of mercury. Disconnect from test adapter, and wait 1 minute. Gauge should drop no more than ____ inches of mercury.
Pump to 20. Should drop no more than 3.
When inspecting the faceplate. Scratches ____ deep or deeper, and more than ____ long (or if faceplate is cracked) needs to be replace.
1/32 inch deep and more than 1 inch long.
What is the torque of the faceplate/whisker screws?
15 in-lbs.
KM-97 Communications are wired in (series/parallel).
Parallel.
What is the KM97 helmet made of?
Helmet shell is fabricated using high grade 3161 Stainless Steel.
What are the KM97 o-rings lubricated with?
MIL-PRF-27617 type II or III
What are the KM97 o-rings lubricated with?
MIL-PRF-27617 type II or III grease or Christolube
What could cause a diver to pass out when diving KM97?
A neckdam that is too tight could put pressure on the carotid artery.
Why should you not over tighten the packing nut on the KM97?
It will prevent movement of the nose-block device.
What is the correct flow of gas from the KM97?
Inside the helmet out to the quad exhaust main body. If exhaust valve is backwards, the diver won’t be able to exhale.
When will the KM97 regulator require internal adjustment?
If the purge cover has no play or the play is greater than 1/4in before gas flow is heard.
Silicone sealant used to rebuild KM97 must cure for how long before using the helmet?
24 hours.
Is it ever acceptable to tighten the comms mount nut with a wrench or tool?
Fuck no.
What is the faceplate (including the adapter plug screws on the top) of the KM97 torqued to?
15in-lbs
What do you use to clean the KM97 shell with?
-Biocircle E-Nox Clean (To remove corrosion) and UNO SF (to neutralize ENOX)
What do you use to Sanitize the KM97?
Wescodyne, Advanced TBE, Bi-arrest 3, Confidence plus.
Can Aerosol sprays be used to clean the KM97?
No, sprays can cause invisible damage which could lead to the faceplate shattering if struck.
When using the KM-97, what shall the EGS over-bottom pressure be set at?
165psi.
What side of the helmet cushion faces inwards/towards the ears?
The smooth (not bumpy) side.
How many turns and how many threads are shown when using teflon tape?
1 1/4 turns
3 threads
What are the two colors of Loctite authorized on the KM97?
Blue (248) or Purple (222)
What is the torque for the KM97 diaphragm cover?
12in-lbs
What can you use to shine the KM97?
Scotch brite or a similar non-metallic scouring pad.
The ADAPTERS (not the screws that go in them) on the faceplate get torqued to what?
20 in-lb
If helmet shell has any cracks or dents deeper than ____ or shows deformation, it shall be sent to KM for evaluation.
1/8”
Regulator mount nut torque spec:
150in-lb
Neckdam collar screws torque:
14inlbs
Side block mounting nut torque:
35inlb
