Middleby Marshall PS220 Middleby Marshall, PS360EWB and PS360WB70, Oven Gas Conversion Kit p/n

SECTION 3 - SERVICING COMPONENTS

Appendix - Instructions for Service Kit 36863 - Gas Conversion Kit for PS360EWB/WB70 with Midco Burner, Propane to Natural Gas, 1/98

Middleby Cooking Systems Group • 1400 Toastmaster Drive • Elgin, IL 60120 • (847)741-3300 • FAX (847)741-4406

Middleby Marshall®

Oven Gas Conversion Kit p/n 36863

PS360EWB and PS360WB70

Propane to Natural Gas Installation Instructions

WARNING

This conversion kit is to be installed by a Middleby Marshall Authorized Service Organization in accordance with the manufacturer’s instructions and all codes and requirements of the authority having jurisdiction. Failure to follow instructions could result in serious injury or property damage. The authorized service organization performing this work assumes responsibility for this conversion.

This kit consists of the following parts:

Qty.	Units	p/n	Description
1	ea.	36862	Instructions for Conversion of Propane Operation to Natural Gas Operation, PS360EWB and
			PS360WB70
1	ea.	31818	Orifice, Pilot Assembly - Natural Gas, 0.032” (0.81mm)
1	ea.	31821	Orifice, Main - Natural Gas, 0.234” (5.94mm)
1	ea.	22174-0006	Orifice, Low Flame - Nat. Gas, 0.065” (1.65mm, #53 drill) - used for converting PS360WB70 only
1	ea.	22500-0064	Label, NAT, Green
1	ea.	22500-0123	Label, Conversion - Gas

IMPORTANT

When converting any oven that is installed at an altitude above 5000 ft. (1524m), consult Middleby before installing this Kit.

1. PREPARATION

1.1Turn off the electric power supply to the oven.

1.2Turn off the gas supply at the service valve behind the oven.

WARNING

Before performing any service or conversion work, the electrical power supply AND the gas supply MUST be turned off.

1.3Open the machinery compartment access door.

2. PILOT ORIFICE REPLACEMENT

2.1Unscrew the brass fittings at both ends of the aluminum pilot tubing that connects the pilot orifice to the combination gas control valve. This allows the tubing to be removed. See Figure 1.

Figure 1

Conversion component locations

	Solenoid valve
	(PS360WB70 only)	Main
		orifice
Low flame bypass		holder
(PS360WB70 only)
Combination gas
control valve		Pilot
		orifice
		Aluminum
		pilot tubing
p/n 36862	P. Jan. 98 Rev B	Page 1 of 4

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