Middleby Marshall PS528-SERIES PS528G User Manual
Page 20
16
SECTION 2
INSTALLATION
=
G. Maintenance
It is recommended to check yearly the minimum and the
maximum setting and readjust them if necessary.
H. Connection
WARNING
Some procedures in this section may require
conversions, readjustments, or service on the
oven's gas system. Before performing these
procedures, check that the main gas supply valve and
the circuit breaker/fused disconnect are in the OFF ("O")
position. After completing these procedures, perform a
gas leak test before operating the oven.
CAUTION
The terms of the oven's warranty require all start-ups, conver-
sions and service work to be performed by a Middleby Mar-
shall Authorized Service Agent. The installation, start-up and
changes required when changing from one gas type to another
can be performed ONLY by a certified professional.
NOTE:
Certain safety code requirements exist for the installation
of gas ovens; refer to the beginning of Section 2 for a list of
the installation standards. In addition:
•
In the USA, the installation must conform with local codes,
or in the absence of local codes, with the National Fuel
Gas Code, ANSI Z223.1.
•
In Canada, the installation must conform with local codes,
or in the absence of local codes, with the Natural Gas
Installation Code, CAN/CGA-B 149.1, or the Propane
Installation Code, CAN/CGA-B 149.2, as applicable.
•
In Australia, the installation must conform with AGA Codes
AG311 and AG601, and with any requirements of the
appropriate statutory authority.
•
In CE countries, the gas supply connection should be
according to EN-203 (gas appliance directive) and to
applicable ISO 228-1 or ISO 7-1 recommendations. All
aspects of the gas supply connection must comply with
current IEC/CEE requirements and with all applicable
local, national, and international codes.
•
For all ovens equipped with casters, the gas line connection
shall be made with:
-
A connector that complies with the Standard for
Connectors for Movable Gas Appliances, ANSI Z21.69
(in USA), or Connectors for Movable Gas Appliances,
CAN/CGA-6.16 (in Canada).
Check the oven’s gas supply requirements to determine the
type of gas to be used with the oven. If the gas type required
does NOT match the local supply:
•
For North American installations, a conversion kit is
supplied with the oven to allow operation using propane
gas. Refer to Part B, Gas Conversion, in this section.
•
For CE ovens, directions for converting the oven for use
with other gases are described in Part D.1, Preparation
for Use with Various Gases, in this section.
Figure 2-16. Gas Burner Assembly
Figure 2-17. Burner Assembly
Figure 2-18. Gas Valve
F.
Checkout
After any adjustment, set appliance in operation and observe
through a component cycle to ensure that burner system
components function correctly.
Gas Burner
Manifold Pressure Tap
Manifold Pressure Tap
Gas Valve
Gas Burner
Assembly
Main Orifices
Adjustment Screw (5 mm)
for minimum pressure
setting
Adjustment
Screw (8 mm) for
maximum
pressure
setting