Moffat E85-8HLD Service Manual

INSTALLATION / OPERATION

MANUAL

E85HLD PROVER
/ HOLDING CABINET

F22791-8

MANUFACTURED BY

Moffat Limited
PO Box 10001
Christchurch
New Zealand
Ph: [phone]
Fax: [phone]

WORLD-WIDE BRANCHES

UNITED KINGDOM

Blue Seal
Units 6-7, Mount Street Business Park
Mount Street, Nechells
Birmingham B7 5QU
Ph: [phone]
Fax: [phone]

UNITED STATES

Moffat Inc
3765 Champion Blvd
Winston-Salem
North Carolina 27115
Ph: [phone]
Fax: [phone]

CANADA

Serve Canada
22 Ashwarren Road
Downview
Ontario M3J1Z5

Toll Free:800 263 1455
Ph: [phone]
Fax: [phone]

[e-mail]
www.servecanada.com
www.moffat.com

NEW ZEALAND

Christchurch

Moffat Limited Moffat Limited
PO Box 10-001 4 Waipuna Road
16 Osborne Street Mt Wellington
Christchurch Auckland
Ph: [phone] Ph: [phone]
Fax: [phone] Fax: [phone]

AUSTRALIA

Victoria

Moffat Pty Limited Moffat Pty Limited
740 Springvale Road 3/142 James Ruse Drive, Rose Hill
Mulgrave, Melbourne PO Box 913, Smithfield
Victoria 3171 Sydney, N.S.W. 2142
Ph: [phone] Ph: [phone]
Fax: [phone] Fax: [phone]

Western Australia

Moffat Pty Limited Moffat Pty Limited
67 Howe Street 30 Prosperity Place
Osbourne Park Geebung, Brisbane
WA 6017 Queensland 4034
Ph: [phone] Ph: [phone]
Fax: [phone] Fax [phone]

Auckland

New South Wales

Queensland

The reproduction or copying of any part of this manual by any means whatsoever is strictly forbidden unless authorized previously in
writing by the manufacturer.

In line with policy to continually develop and improve its products, Moffat Ltd. reserves the right to change the specifications and
design without prior notice.

© Copyright Moffat Ltd. November 2006.

Contents

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

Installation..........................................................................................................3

Before Connection
Location
Electrical Connection
Water Connection (Auto Fill Models Only)
Rack Width
Stacking with Convection Oven

Specifications.....................................................................................................5

Operation............................................................................................................9

Description of Controls
Condensation Channel
Operating in PROVE Mode
Bake-Off
Problem Solving
Hints
Operating in HOLD Mode

Cleaning and Maintenance.............................................................................. 13

Trouble Shooting .............................................................................................14

Spare Parts.......................................................................................................15

Circuit Schematics...........................................................................................16

E85-HLD Prover / Holding Cabinet (Manual Fill)
E85A-HLD Prover / Holding Cabinet (Auto Fill)

Date Purchased................................................................. Serial No ..........................................................

Dealer............................................................................................................................................................

Service Agent ................................................................................................................................................

1

Introduction

We are confident that you will be delighted with your E85HLD PROVER / HOLDING CABINET, and it will
become a most valued appliance in your commercial kitchen.

A new oven can seem very complex and confusing at first glance. To ensure you receive the utmost
benefit from your new Prover, there are two important things you can do.

Firstly

Please read the instruction book carefully and follow the directions given. The time taken will be well
spent.

Secondly

If you are unsure of any aspect of the installation, instructions or performance of your prover, contact your
E85HLD dealer promptly. In many cases a phone call could answer your question.

2

Installation

Installation Requirements

It is most important that this prover / holding cabinet is installed correctly and that
operation is correct before use.

Installation shall comply with local electrical, health and safety requirements.

Before Connection to Power Supply

• Remove all packing.

• Check equipment and parts for damage. Report any damage immediately to the carrier and
distributor.

• Remove protective plastic coating from the side panels.

• Check that the available power supply is correct to that shown on the rating plate located on the
right-hand side panel.

E85HLD 110-120 Volts A.C, 60 Hz, 1P+N+E, 1.65 kW, 14.5 A
E85HLD 220-240 Volts A.C, 50 Hz, 1P+N+E, 1.65 kW, 7.2 A

Location

• To ensure correct ventilation for the motor and controls the following minimum installation
clearances are to be adhered to:

Rear 0 mm / 0 ”
Left-hand side 0 mm / 0 ”
Right-hand side 25 mm / 1 ”

Electrical Connection

• E85HLD provers are supplied fitted with cords. Ensure unit is fitted with correct cord and plug.

• To access the electrical connection terminal block, grounding lug and strain relief, remove the
right hand side panel.

WARNING - THIS APPLIANCE MUST BE EARTHED / GROUNDED

Water Connection (Auto Fill Models Only)

• A cold water supply should be fitted to the water inlet (¾” BSP connection) which is located near
the rear of the right hand side of the unit.

• Alternately, a connection elbow and sealing washer is supplied with this unit for direct connection
of a ½” ID hose, and is recommended for easy installation and service.

• Connect water supply - Max inlet pressure 80psi / 550kPa.

• Turn on water supply to check for leaks.

Rack Width

• The E85HLD prover has been designed to accept either 18”
or 16” wide trays.

• The prover comes factory set for 18” trays, to change to 16”
trays:

• Remove the RH side rack (lift and extract).

• Undo the thumb screws (A) holding the RH rack
supports (B) and turn RH rack supports around, then
re-secure with thumbscrew.

3

A

For 18” trays

A

B

B

B

For 16” trays

B

A

A

Installation

Stacking with Convection Oven

• The E85HLD prover is supplied standard with a top lid for stand alone use.

• Optionally, the E85HLD prover can be combined underneath a MOFFAT E35 convection oven as
a complete unit. For this a stacking kit is required (part number 022299).

• For installation of the stacking kit, refer to the instructions provided with the kit. These instructions
also include the procedure for mounting the E35 convection oven on top of the E85HLD prover
and stacking kit.

4

Specifications

E85-8HLD Prover

880

Front

880

902

MWS

E

1

250

150

MWS

E

1

WATER ENTRY

ELECTRICAL ENTRY

Side

E

1

MWS

40

Plan

Electrical Connection 110-120 Volts A.C, 60 Hz, 1P+N+E, 1.65 kW, 14.5 A

220-240 Volts A.C, 60Hz, 1P+N+E, 1.65kW, 7.2A

Cold Water Connection
(Auto Fill Models Only)

¾” B.S.P. or 1/2 ID hose (550kPa / 80psi maximum pressure)

5

Specifications

E85-12HLD Prover

880

Front

880

1145

WATER ENTRY

MWS

E

1

250

150

MWS

E

1

ELECTRICAL ENTRY

Side

E

1

40

Plan

Electrical Connection 110-120 Volts A.C, 60 Hz, 1P+N+E, 1.65 kW, 14.5 A

Cold Water Connection

¾” B.S.P. or 1/2 ID hose (550kPa / 80psi maximum pressure)

(Auto Fill Models Only)

6

Specifications

E85-8HLD Prover / E35 Oven

880

E

3

WATER ENTRY

MWS

ELECTRICAL ENTRY

1006.5 100

980 (30" Ovens)

880 (26" Ovens)

800

MWS

E

3

1753

902

Front

E

1

E

1

150

ELECTRICAL ENTRY

E

3

MWS

Side

40

Plan

7

Specifications

E85-12HLD Prover / E35 Oven

880

E

3

WATER ENTRY

MWS

ELECTRICAL ENTRY

980 (30" Ovens)

880 (26" Ovens)

800

MWS

E

3

1001250

2000

Front

E

1

E

3

ELECTRICAL ENTRY

MWS

40

150

1145

E

1

Side

Plan

8

Operation

Operation Guide

Description

Function

O Unit is off
PROOF Unit is in proving mode (indicator illuminates)
HOLD Unit is in holding mode (indicator illuminates)

Thermostat

Temperature range 0 - 80°C.
Indicator illuminates when the elements are cycling ON

to maintain set temperature.

(Controls the cabinet air temperature)

of

Controls

85

Humidity Control

LO - Setting for butter based pastries (croissants, Danish

pastries etc.)

MED/HI - Setting for yeast based breads and doughs.

Indicator illuminates when elements are cycling ON to

maintain set temperature.

(Controls the cabinet humidity in PROOF mode only)

Thermometer

Dual Centigrade and Fahrenheit scale.
Indicates cabinet temperature.

Condensation channel

There is a condensation channel below the proofer door for
the purpose of collecting door condensation run-off.

A diameter 12.7mm (½”) drain outlet is provided in the centre
of this channel and is factory fitted with a drain bung. The
drain facility can be used in three ways:

• Remove the bung when emptying is required and drain
into collection vessel. Refit bung until next drainage.

• Place a suitable collection vessel or pan on the floor
below the drain outlet and remove bung permanently for
continual draining. Empty collection vessel or pan as
required.

• Remove the bung and connect a 12.7mm (½”) I.D. hose
or similar to drain outlet and route hose to permanent
drainage.

9

Operation

Operating in PROOF Mode

Ensure that power is supplied to the unit and the water trough is filled

It is recommended that the prover operates empty before loading with product

- Warm days up to 10 minutes - Cool days up to 30 minutes

1. Ensure water tank is filled with water

Standard models: Open the prover door and fill the water tank located at the front of the right

hand side rack. The tank should be filled to 20mm (¾”) from the top of the tank.
Remember to top up the water tank when the water level is below the halfway level in the
tank (before the heating element is exposed).

Auto fill models: Check the water tank is full and that the heating element is well covered.

2. Set function to PROOF

Indicator light will illuminate when the switch is in the “PROOF” position.

3. Set thermostat to desired proving temperature

Indicator light will illuminate when the elements are cycling on to maintain set temperature.

25-30°C Butter based pastries
35-40°C Yeast based breads and doughs

4. Set humidity to desired level

Indicator light will illuminate whenever elements are cycling on to maintain set humidity.

As a guide;

Set humidity to between ‘LO’ and MED’ marks on control panel as a general rule.

Increase or decrease as found necessary for specific product types.

Humidity is required only to avoid product dry skinning on surface. Do not set humidity

such that product becomes sticky and wet on surface. A silky to touch surface on the
product is a general recommendation for correct humidity levels.

Avoid excess humidity levels as this will also create excess condensation in the cabinet

interior.

Butter based product require much less humidity than breads.

Bake-Off

Note:

This prover has been designed for use together with a refrigerator and oven to take frozen uncooked
yeast or butter based products to finished cooked products.

1. Prepare product

Arrange frozen products onto baking trays.

2. Thaw

Refrigerate at 4°C overnight. Do not leave standing at room temperature or product may dry out.

3. Prove

Place thawed products directly from the refrigerator into the pre-heated prover. Prove for 30-60

minutes dependant on product and food proving recommendations.

4. Bake

Place proved product directly from the prover into the pre-heated oven. We recommend the

Moffat E35 Turbofan Oven.

10

Operation

Problem Solving

Product collapses

When using frozen dough which collapses or shrinks in the oven after proving, this is caused by too

much proving. Reduce the proving time for the next batch.

Dry product

The dough piece in the prover should never be dry to the touch. A moist, firm and silky membrane

should cover the dough piece during proving.

Wet product

The dough piece in the prover should not be wet to touch whilst proving and should not adhere to

fingers. Water should not condense on the trays. If it does there is either too much moisture or too
little heat in the prover.

If there are any problems with your dough the most likely causes are as follows:

• Too much heat and too little moisture.

• Not enough heat and too much moisture.

• Proving time too long or too short.

• Incorrect oven temperature.

• Incorrect maturity adjustment in the formulation of the dough for the flour.

• Incorrect thawing procedure, or handling of the dough after thawing.

Hints

Heat

It is better to operate the prover at a lower temperature with adequate moisture rather than at a

hotter temperature with too little moisture.

Yeast

Yeast activity starts very slowly at about 5°C and increase in speed or gas production as the

temperature rises. When a temperature of approximately 60°C is reached, the yeast is killed and
baking of the aerated product starts. Thus different rates of proving occur as the temperature
changes.

Flour

The amount of proving required is determined by the quality of the GLUTEN in the flour. Gluten is

a rubber like product and can perish if stretched too far by too much proving. Collapsing of the
product or shrinkage will occur.

Proof

You must recognise the proof of the product by the appearance of the dough rather than the size.

11

Operation

Operating in HOLD Mode

Ensure that power is supplied to the unit and the water trough is filled

It is recommended that the cabinet operates empty before loading with product

- Warm days up to 10 minutes - Cool days up to 30 minutes

1. Set function to HOLD

Indicator light will illuminate when the switch is in the “HOLD” position.

2. Set thermostat to desired holding temperature

Indicator light will illuminate when the elements are cycling on to maintain set temperature.

3. Humidity

The humidity is not used in HOLD mode. The setting on this dial will have no effect as the

wet element is disabled.

4. Thermometer

The thermometer gives an accurate reading of the cabinet temperature to ensure that the

product being held is at the correct temperature.

12

Cleaning Guidelines

Cleaning

Caution:

ALWAYS TURN OFF THE POWER SUPPLY BEFORE CLEANING.

THIS UNIT IS NOT WATER PROOF.

DO NOT USE WATER JET SPRAY TO CLEAN INTERIOR OR EXTERIOR OF THIS UNIT.

Cabinet

Clean with a good quality stainless steel cleaning compound. Harsh abrasive cleaners may damage
the surface.

Side racks

To remove, take hold of the centre rung and lift upwards to disengage the rack key-holes from the

hanger studs. To replace, hold horizontally, engage keyholes onto studs and push down.

Door

Wash with warm water and detergent solution using a soft sponge in straight lines up and down the

door. Rinse with clean, warm water and dry off.

Water tank

Remove the RH side rack and remove tank by lifting off its hanger studs. Clean with warm soapy

water. Rinse thoroughly and refit.

Water tank element

When the element becomes limed/scaled remove the water trough and clean. Replace water trough

and half fill with white vinegar or acetic acid, then fill to the normal level with water. Switch the unit on,
turn the humidity to HI and operate for approximately 30 minutes. Remove trough and clean the
element with a damp cloth when cooled. Rinse out the through and refit to unit.

This procedure is recommended to be carried out once a week. Frequency of cleaning the element

may be increased or decreased depending on the lime depositing on the element.

13

Trouble-shooting

Fault Possible Cause Remedy

The prover does not operate /
start.

No humidity. Unit is in HOLD mode

Slow recovery. Overloading of cabinet.

Door does not close. Tray in way of door. Correctly position tray in rack.

The mains isolating switch on the
wall, circuit breaker or fuses are
“off” at the power board.

The power switch on the cabinet
is off.

No water in trough.

Door opened unnecessarily.

Turn on.

Rotate switch. Indicator will
illuminate.

Switch unit to PROOF mode.
(Humidity is only generated in
PROOF mode).

Fill with water.

Reduce batch size.

Do not open unnecessarily.

14

Replacement Part List

Controls

022789 Switch - Function
020823 Knob - Power
022787 Thermostat (Temperature)
015485 Thermostat (Humidity)
020823 Knob - Temperature Thermostat
021472 Knob - Humidity Thermostat
020849 Neon Indicator
022788 Thermometer

Auto Fill Option

020851 Solenoid Valve
021534 Relay
022250 Float Switch

Motor & Elements

Spare parts

022042 Fan
025387 Motor
021694 Dry Element
021696 Wet Element

Door

021434 Door Assembly - 8 Tray Unit
021436 Door Assembly - 12 Tray Unit
021468 Handle
021663 Hinge
018947 Magnetic Catch

Racks

021416 Side Rack - 8 Tray Unit
021417 Side Rack - 12 Tray Unit

15

Circuit schematic

E85 Prover / Holding Cabinet - Manual Fill

16

Circuit Schematic

E85A Prover / Holding Cabinet - Auto Fill

17