Kirby 77 operating instructions Diver’s body. Never allow the umbilical

Kirby Morgan 77

	European C.E. ONLY
WARNING
	In European countries that have adopted C.E. certi-
Never dive without attaching the umbili-
	fication, only C.E. certified cylinders are allowed to
cal to some type of harness or clip on the
	be used and must have a minimum charged capacity
diver’s body. Never allow the umbilical
	available to the diver of 1400 N/l (50 scf). The emer-
to pull on the helmet directly or the diver
could suffer a neck injury.	gency gas supply must only be fitted with a KMDSI
	first stage regulator and have a KMDSI over pressure
A small tank can be mounted horizontally on the
	relief valve installed (Part # 200-017). The relief
lower rear or front, while larger tanks are usually	must be adjusted to start lifting at approximately
mounted vertically in the center back similar to a	180-200 p.s.i.g. (12.4-13.8 bar) above the regulator
Scuba diver’s tank. Some harness designs incorporate
	intermediate setting. The purpose of the relief valve
a cloth enclosure into which the tank fits. The entire
	is to allow pressure to vent off in the event the first
tank, valve, and regulator are enclosed in fabric. This
	stage regulator develops a leak or creeps. Without a
helps to prevent snagging.
	pressure relief valve, the hose could rupture and the
	emergency gas supply would be lost.

The diving harness must have a provision for at- taching the emergency gas supply and a place to attach the diver’s umbilical.

When determining the size of the emergency gas cylinder to use, several factors must be considered. The divers depth, the length of time the diver may be without the main gas supply, and the gas consump- tion rate. Regardless of the cylinder used, it should be of sufficient volume to allow the diver to ascend at a normal rate or transit to a point where a normal gas supply can be reestablished.

WARNING

A standard Scuba submersible pressure gauge must be connected to the high pressure port on the first stage so that the diver can monitor his emergency supply.

Use a good quality first stage for your emergency gas supply.

The emergency air/gas tank must be fitted with a good quality first stage regulator to reduce the pres- sure to less than 225 p.s.i.g. (16 bar) ambient diver pressure. Connect the first stage hose with a set of quick disconnecting locking sleeves to the emergency valve assembly located on the side block.

The first stage regulator must have at least two low pressure ports. One port is used for the connector hose to the emergency valve and the second is used to install an overpressure relief valve (Part #200-017). If the first stage develops a leak, the full pressure of the tank could be placed on the low pressure hose. This could cause the hose to burst. The overpressure relief valve will bleed off any leak.

48 © Copyright 1970-2008 Kirby Morgan Dive Systems, Inc. All rights reserved. Document #080626002