Danfoss GBC 6s, GBC 22s, GBC 28s, GBC 35s, GBC 42s Installation guide

Installation guide

Spareparts

Type GBC service kit (only for R744 applications)

<![if ! IE]> <![endif]>009R9514	1		Choose the correct Service Kit			2	Locate the ball valve that needs to be fitted with the
			according to the valve size.				service kit.
							Pump down the section of system where the ball valve is
		Valve size		Code no.		3
							located to the lowest permissible pressure, governed by
		GBC 6s –GBC 22s		009G8012
							the suction low pressure safety switch.
		GBC 28s – GBC 35s		009G8014
							In case it is impossible to pump down the section of the
		GBC 42s –GBC 79s		009G8016
							system, please contact Danfoss for further instructions.
			This kit is only suitable for old				The Service Kit should be fitted by competent & trained
			design ball valves(009Gxxxx)!				Service Technicians.
			If need more information, please				Before continuing with retrofit, please carefully review
			contact Danfoss.				enclosed extra caution recommendations on the back
							page.

4 Remove the original cap from the valve.

Danfoss

9G222.10

If the thread or flanging area of GBC housing has been damaged, do not use this service kit. GBC valve needs to be replaced with a new valve.

5	6 Final view

Valve is opened / closed using a suitable wrench

Danfoss 9G221.10

Tighten the Service Kit with approx. torque.
Valve size	Min. – Max. [Nm]	Min. – Max. [ft-lbs]
GBC 6s – GBC 16s	10 – 15	7.4 – 11.1
GBC 18s – GBC 22s	15 – 25	11.1 – 18.4
GBC 28s – GBC 35s	25 – 35	18.4 – 25.8
GBC 42s – GBC 79s	35 – 40	25.8 – 29.5
			Do not remove the Service Kit under any
Make sure to use torque wrench to tighten			circumstances, once the installation is
the service kit.			complete.

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<![endif]>009R9514

© Danfoss | DCS (ms) | 2019.06

AN213986438389en-000601 | 1

Below extra cautions should be followed

during the installation of service kit in CO2 systems

•Use appropriate safety equipment, such as: Safety glasses, anti-freeze gloves, ear protectors and where necessary a helmet, before operating the GBC during service.

•Be aware of your surroundings BEFORE removing the cap from the GBC ball valve. ENSURE that you do not occupy the area in front of the spindle and at arm’s length from the valve to avoid any potential danger of being hit by the spindle and provide a means of stopping the spindle should it become ejected from the body after the cap has been removed (in extreme cases).

•Take extra care when working on steps or in confined spaces.

•When working at height – Consider the use of a suitable safety harness.

Generally, all work should be carried out in a well-ventilated area. Ideally, the technician should use a personal R744 detector to ensure that the area is safe to work in.

All tools and equipment such as hoses should be rated for the pressure of the system, R744.

The servicing technician should be familiar with the system and should understand how sections of the system are safely isolated. This includes the effect on the system when closing valves and the potential for trapping liquid R744 between closed valves.

Welding or brazing should not be attempted on the system until fully de-pressurized.

© Danfoss | DCS (ms) | 2019.06

AN213986438389en-000601 | 2