Market Forge Industries M24E Instructions d'installation et d'utilisation

ME SERIES

ELECTRICALLY OPERATED BOILERS

INSTALLATION - OPERATION - MAINTENANCE

44 Lakeside Avenue, Burlington, Vermont 05401 USA

Telephone: (802) 658-6600 Fax: (802)864-0183

www.mi.com PN 14-0309 Rev C (12/15)

MODELS

M24E

M36E

Your Service Agency’s Address:

Model

Serial number

Boiler installed by

Installation checked by

TABLE OF CONTENTS

INSTALLATION

Introduction.............................................................. 2

Assembly ............................................................... 3

Service Connections ..................................................... 4

OPERATION

Operating Instructions .................................................... 5

MAINTENANCE

Cleaning the Boiler ....................................................... 6

IMPORTANT

WARNING: Improper installa-

tion, adjustment, alternation,

service or maintenance can

cause property damage, in-

jury or death. Read the instal-

lation, operation and mainte-

nance instructions thoroughly

before installing or servicing

this equipment.

FOR YOUR SAFETY

Do not store or use gasoline or

other ammable vapors or liq-

uids in the vicinity of this or any

other appliance.

The information contained in this

manual is important for the prop-

er installation, use, and mainte-

nance of this boiler. Adherence

to these procedures and instruc-

tions will result in satisfactory

baking results and long, trou-

ble free service. Please read

this manual carefully and retain

it for future reference.

ERRORS: Descriptive, typo-

graphic or pictorial errors are

subject to correction. Speci-

cations are subject to change

without notice.

INSTALLATION

Introduction

To the Kitchen Manager:

1. Read this manual carefully and in its entirety. Contact

Market Forge Ind., Inc. for clarication if necessary.

2. Protect your kitchen personnel from scalding and

other serious injury by providing training programs to

acquaint all equipment operators with the correct and

safe methods of operation.

3. Operators must be made aware of the consequences

of misuse. Steam producing equipment, no matter

who the manufacturer, is inherently dangerous when

misused. The possibility of serious scalding always

exists, the careless and/or untrained operator will be

injured.

4. This equipment must be maintained according to the

guidelines in this manual (see “maintenance”). Lack

of maintenance will lead to a potentially hazardous

condition and possible liability. Operators should re-

port any equipment malfunction immediately and

steps must be taken to correct the problem before

further use of the equipment is allowed.

5. Keep this manual for daily reference.

THEORY OF OPERATION FOR ELECTRIC BOILER:

An explanation of how the control system operates on au-

tomatic electric boilers follows:

With the boiler lled with water to the proper level and the

heat switch is turned ON, the contactors will pull in and

permit the completion of the electric circuit to the heating

elements. When the boiler builds to its set pressure, the

pressure switch opens. This will open the circuit to the

coil in the contactor, which in turn will drop the contacts in

the contactor and shut off the electricity. As the pressure

in the boiler drops the pressure control switch will again

complete the circuit and build the boiler back to its set

pressure. To stop all steam generation place the ON/OFF

switch to the OFF position.

3INSTALLATION

Assembly

RECEIVING INSTRUCTIONS:

Inspect the equipment before signing the bill of lading.

The equipment supplied was tested and inspected before

shipment. The carrier accepted it as complete and without

damage.

This merchandise became your property when it was ac-

cepted by the carrier at the factory. Market Forge cannot

assume responsibility for loss or damage during transit.

For this reason, you should immediately inspect for visible

and concealed damage or shortages before signing for

shipment as follows:

1. Count the number of cartons and packages received

to be sure they coincide with the bill of lading.

2. Visually check all cartons for external damage.

3. Remove all cartons from their skids to examine equip-

ment for concealed damage. The carton is nailed and

strapped to the skid. It will be necessary to cut the

straps and pry off the container.

4. After inspection, replace the cartons over the equip-

ment on the skids to protect and secure the equip-

ment until it is ready for installation.

5. Sign for shipment if all is in order. Note shortages, ex-

ternal and concealed damage, if any, on the bill of lad-

ing before accepting a partial or damaged shipment.

6. If necessary, contact the carrier immediately to le a

claim. All claims must be led by the receiver.

7. Do not remove the cartons or the skids from the cook-

ing equipment until the unit has been transported

through the building to the actual set-up location. The

cartons should remain on the equipment as protec-

tion against dents and scratches.

INSTALLING LEGS:

Some models are shipped without legs. A separate carton

will contain the legs. If your model is received this way,

be sure to follow the installation instruction sheet packed

with the legs.

LEVELING:

In order for the boiler to drain correctly, it is important to

use a level on cabinet top both left and right and front-to-

back. If not level, adjust feet. On compartment cookers,

check the interior shelves for level condition.

INSTALLATION

Service Connections

ELECTRICAL REQUIRMENTS

Volts Phase 24kW 36kW 42kW 48kW

208 (197-219) 3 66 100 117 -

240 (220-240) 3 60 91 - 116

480 (360-500) 3 32 47 - 58

Details of other electrical systems available upon request.

SERVICE CONNECTIONS

EP Power Supply - Use wire suitable for at least 90°C. Nominal

amp per line wire:

CW1 Cold Water - 3/8” (10mm) NPT for cold water to boiler. Cold

water lines will have a maximum of 50 PSI (3.5kg/cw2) and a

minimum of 25 PSI (1.8 kg/cw2) water pressure (Water may

be filtered).

CW2 Cold Water - 3/8” (10mm) NPT for cold water to condenser.

Cold water lines will have a maximum of 50 PSI (3.5kg/cw2)

and a minimum of 25 PSI (1.8 kg/cw2) water pressure.

D Drain - Pipe full 2” (50mm) NPT to flush floor drain capable

of receiving water flowing at a maximum rate of 5 gallons (19

liters) per minute. DO NOT MAKE SOLID CONNECTION TO

FLOOR DRAIN.

ST Steam Take-off - Connection for operation of adjacent steam

powered equipment.

The only available space to supply utilities to the electric boiler is the 6”

(152mm) space between the floor and the cabinet.

PVC & CPVC PIPE ARE NOT ACCEPTABLE MATERIALS FOR

DRAINS.

DRAIN LINE INSTALLATION: The drain port of the unit is marked with

a colored tag and is located at the lower rear left side of the boiler as

viewed from the front. This exhaust line may be left open if the boiler

has to be situated in a tiled floor depression or a tiled curb section that

is equipped with drain facilities. If this is not the case, then a 2” (51mm)

NPT drain line must be connected to divert the exhaust to the floor drain.

If it is necessary to use more than two elbows, increase the size of the

waste line accordingly.

WARNING: DO NOT UNDER ANY CIRCUMSTANCE CONNECT THE

EXHAUST DRAIN LINE DIRECTLY TO A SEWER LINE.

WATER SUPPLY

Good quality water feed is the responsibility of the owner. Water quality

must be within the following general guidelines.

TDS: 40-125 ppm Hardness: 35-100 ppm Chlorine: <0.2 ppm

Silica: <13 ppm Chlorides: <25 ppm

Chloramine: <0.2 ppm pH: 7.0 - 8.5

The best defense against poor water quality is a water treatment system

designed to meet your water quality conditions.

Appliance to be installed with backflow protection according to federal,

state or local codes.

DIMENSIONS ARE IN INCHES [MM]

24 [610] M24E

36 [914] M36E

4 [102]

2.5 [64]

6 [152]

CW2

CW1

10.5

[267]

3 [76]

5 [127]

6 [152]

[838]

10.5

[267]

12.5

[318]

[559]

[711]

6 [152]

CW1

CW2

DEP

Figure 1

5OPERATION

Operating Instructions

OPERATING INSTRUCTIONS FOR STEAM BOILERS

Be sure to check that

1. ON-OFF switch is in the off position.

2. Water supply valve is open.

3. Electricity is connected to all units.

4. Proceed with the daily operating procedures.

DAILY OPERATING PROCEDURE:

1. Press ON-OFF switch from off to on.

2. Wait 5-10 minutes for water to ll in steam boiler

(gauge glass should be 2/3 full)

3. Press HEAT switch from ON to OFF and release back

to ON. When the Low Water light goes off, the Green

indicator light will come ON. (This is necessary to

manually reset the unit).

4. Wait 10-15 minutes to allow the boiler to build pres-

sure to the desired operating level of 9-11 PSI PSI.

DAILY SHUT DOWN AND CLEANING:

1. STEP 1 - Press water switch off. This will drain the

steam boiler.

2. STEP 2 - After steam boiler has completely drained

repeat steps 1 & 2 (water to remain in steam boiler

until next daily use).

Figure 2

MAINTENANCE

Cleaning the Boiler

Market Forge recommends that the boiler be cleaned pe-

riodically due to impurities introduced through the water

supply. All water supplies contain some mineral deposits

and impurities; the degree varies with geographic loca-

tion. Market Forge is recommending a cleaning sched-

ule that will keep your equipment in proper, safe working

order where water supplies are relatively pure. Because

no water supply can be accurately compared with that of

another, this section should not be regarded as fool proof.

A stepped-up, more frequent cleaning schedule may be

required when excessive impurities exist.

The Cleaning schedule should be performed two or more

times per year as governed by the local water conditions.

Market Forge recommends the use of its “cathodic des-

caler” to protect the inner boiler walls and components

against rust, scale and lime deposits. The normal ef-

fectiveness of a descaler is one year. The schedule for

changing the “cathodic descaler” may be timed to the

cleaning schedule or accelerated as noted above.

Market Forge qualied service agencies are available

to establish a suitable schedule for TOTAL CONCEPT

cleaning and descaler replacement.

CLEANING INSTRUCTIONS

1. Move the heat and power switch to their OFF posi-

tions. This will allow the boiler to empty.

WARNING:

DISCONNECT THE MAIN POWER SUPPLY.

2. Remove the pressure switch manifold assembly at

the plumbing union (A) in “Figure 3” and move it safe-

ly out of the way.

3. Remove the front cover to the contactor box (B) in

“Figure 3” and move it out of the way.

Figure 3

7MAINTENANCE

Cleaning the Boiler

4. Remove the front cover with elements (C) “Figure 4”

as follows: Using a 1/4” socket head wrench, back off

the (9) Hex-Nuts, counterclockwise.

5. Clean rust, scale and lime deposits from the inside of

the boiler with a wire brush.

6. Remove all debris; ush out with clean water through

the opening created by removing the front cover with

elements and drain.

7. Remove the heating elements from the front cover

plate. Take care not to damage the heating ele-

ments - brush lightly.

8. Clean the front cover plate and element anges with

a wire brush and wash. Be sure the areas that will

come in contact with the gaskets and are clean and

smooth.

To protect against further scale and corrosion remove the

old cathodic anode. Install a new Market Forge zinc an-

ode.

REPLACEMENT PARTS NEEDED TO COMPLETE

THESE INSTRUCTIONS

Description Part No. Qty

Front Cover Gasket 98 - 1673 1

Set of Rubber & Brass Washers 90 - 0039 1

Heating Element Gasket 81 - 8660 3

Market Forge Zinc Anode 08 - 0034 1

Figure 4

MAINTENANCE

Cleaning the Boiler

APPLYING TOTAL CONCEPT DESCALER

Total Concept is designed to be used with water between

160°F to 200°F.

Preheating is required on the boiler to raise the water

temperature to the acceptable range. (160°F to 200°F).

Total Concept is a NSF listed nonfood product. This is

a liquid acid (nonmuriatic) product that works without

fumes, odors, and hazards associated with other harsh

chemicals. Product is also USDA approved.

BOILER TREATMENT CLEANING INSTRUCTIONS

After determining proper location for cleaner/descaler to

be added: Read complete instructions thoroughly; includ-

ing all warning and cautionary statements.

1. Energize boiler and ll to operating level.

Figure 5

2. Energize heating circuit to pre-heat unit.

Figure 6

3. AUTOMATIC - After unit is pre-heated, cycle the pow-

er switch to the OFF position then immediately back

to the ON position

Figure 7

Figure 8

4. Remove the shipping cap, replace it with the pouring

cap. Cut the tip of the pouring cap at the rst notch to

a 45°angle.

Figure 9

5. Install the tubing rmly over the tip of the pouring cap.

Figure 10

6. Energize compartment to release steam pressure in

boiler to “0” PSI before removing pipe plug.

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