Maintenance Daily | Karcher PS640G guide

SECTION 4 - MAINTENANCE

WARNING

Before ANY cleaning or servicing of the oven, perform the following procedure:

1.Switch off the oven and allow it to cool. Do NOT service the oven while it is warm.

2.Turn off the electric supply circuit breaker(s) and disconnect the electric supply to the oven.

3.If it is necessary to move a gas oven for cleaning or servicing, disconnect the gas supply before moving the oven.

When all cleaning and servicing is complete:

1.If the oven was moved for servicing, return the oven to its original location.

2.If the restraint cable was disconnected to clean or service the oven, reconnect it at this time.

3.Reconnect the gas supply.

4.Reconnect the electrical supply.

5.Turn on the full-flow gas safety valve. Test the gas line connections for leaks using approved leak test substances or thick soap suds.

6.Turn on the electric supply circuit breaker(s).

7.Perform the normal startup procedure.

WARNING

Possibility of injury from moving parts and electrical shock exists in this oven. Switch off and lockout/tagout the electric supply BEFORE beginning to disassemble, clean, or service any oven. Never disassemble or clean an oven with the BLOWER () switch or any other circuit of the oven switched on.

CAUTION

NEVER use a water hose or pressurized steam-cleaning equipment when cleaning this oven. To avoid saturating the oven insulation, DO NOT use excessive amounts of water. DO NOT use a caustic oven cleaner, which can damage the bake chamber surfaces.

NOTE

ANY replacement parts that require access to the interior of the oven may ONLY be replaced by a Middleby Marshall Authorized Service Agent. It is also strongly recommended that the 3-Month Maintenance and 6-Month Maintenance procedures in this section be performed ONLY by a Middleby Marshall Authorized Service Agent.

I. MAINTENANCE - DAILY

Figure 4-1. Cooling Vents and Grills

A.Check that the oven is cool and the power is discon- nected, as described in the warning at the beginning of this Section.

B.Clean ALL of the cooling fan grills and vent openings with a stiff nylon brush. Refer to Figure 4-1 for the locations of the grills and vents.

C.Clean the outside of the oven with a soft cloth and mild detergent.

D.Check that ALL cooling fans are operating properly.

CAUTION: If a cooling fan is not operating correctly, it must

be replaced IMMEDIATELY. Operating the oven without adequate cooling can seriously damage the oven's internal components.

E.Clean the conveyor belts with a stiff nylon brush. This is more easily accomplished by allowing the conveyor to run while you stand at the exit end of the conveyor. Then, brush the crumbs off the conveyor as it moves.

F.Remove and clean the crumb trays. If necessary, refer to Figure 2-16 (in Section 2, Installation) when replacing the crumb trays into the oven.

G.Clean the window in place.

Vents on front panel

of oven

Fan grills (2) on rear	Vent (1) on rear
of oven and control	of machinery
compartment	compartment