Vulcan-Hart VPX3 126586, VPX5 126588 User Manual

SERVICE MANUAL

VPX SERIES

ELECTRIC

COUNTERTOP

STEAMERS

MODEL ML

VPX3 126586 VPX5 126588

- NOTICE This Manual is prepared for the use of trained Vulcan Service Technicians and should not be used by those not properly qualifie d. If you have attended a Vulcan Service School for thi s product, you may be qualified to perform all the procedures described in this manu al.

This manual is not intended to be all encompassing. If you have not attended a Vulcan Service School for this product, you should read, in its entirety, the repair procedure you wish to perform to determine if you have the necessary tools, i n s truments and skills required to perf orm the proce dure. Pr ocedur es for which you do not have the necessary tools, instruments and skills should be performed by a trained Vulcan Service Technician.

Repr oduction or other use of this Manual, without the ex press written consent of Vulcan-Hart, is prohibited.

A product of VULCAN-HART LOUISVILLE, KY 40201-0696

F25111 (March 2002)

VPX SERIES STEAMERS

TABLE OF CONTENTS

GENERAL ................................................................................3

Installation, Operation and Cleaning ........................................................3

Introduction ............................................................................3

Features ..........................................................................3

Steam Cooking.....................................................................3

Model Designations .................................................................3

Specifications..........................................................................3

Water Requirements ................................................................3

Electric ...........................................................................3

Tools.................................................................................3

REMOVAL AND REPLACEMENT OF PARTS ....................................................4

Covers and Panels ...................................................................... 4

Component Panel Components ...........................................................5

Timer ................................................................................5

Standby Thermostat ..................................................................... 5

High Limit Thermostat ...................................................................6

Temperature Probe .....................................................................6

Heating Element Assembly ...............................................................6

Manual Drain Valve .....................................................................8

Door ................................................................................10

SERVICE PROCEDURES AND ADJUSTMENTS ................................................12

Door Latch Adjustment .................................................................12

Door Sealing Adjustment................................................................12

Heating Element Test ..................................................................13

Temperature Control Calibration ..........................................................13

ELECTRICAL OPERATION .................................................................14

Component Function ...................................................................14

Component Location ...................................................................15

Sequence of Operation .................................................................15

Wiring Diagrams ......................................................................18

TROUBLESHOOTING...................................................................... 20

CONDENSED SPARE PARTS LIST ...........................................................21

F25111 (March 2002)

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VPX SERIES STEAMERS - GENERAL

GENERAL

INSTALLATION, OPERATION

AND CLEANING

Hardness of 2-3 grains (34-35ppm)



Total dissolved solids (TDS) less than 60ppm



Ph factor of 7.0 to 7.5



Refer to the Installation & Operation Manual for specific instructions.

NOTE:

Daily cleaning is required.

INTRODUCTION

Features

Requires no water or drain line connections



(manual fill & manual drain)

Cast aluminum "element block" for efficient



heat transfer and distribution

Field convertible to single phase or three



phase power

When wired for single phase, a reduced 2/3



power output is available

Steam Cooking

The VPX series steamer provides timed continuous

mode cooking in a "pressure-less" compartment. The small physical size of the steamer offers an efficient way to produce many foods in small batches. Pressure-less, convection steam cooking will steam cook fresh foods or will steam defrost and cook frozen foods providing the maximum color, flavor and nutritional value with the least expenditure of energy and labor. The "pressure-less" cooking compartment allows the operator to open and close the door, anytime during a cooking cycle.

These specifications can easily be obtained with the use of a properly maintained water softener.

2.5 gallons to fill holding pan (approximate)



Electric

AMPERAGE PER LINE (60HZ)

MODEL

VPX3

VPX5

NOTES

TOTAL

9.0 std. 25.0 21.7 10.9 43.3 37.5

6.0

15.0 std. 41.7 36.1 18.1 72.2 62.5

10.0

1. Amperage values in the table are nominal.

Tolerance is +5/-10%.

2. All models are shipped for three phase connections. If a single phase connection is needed, the steamer is field convertible. Requires jumper wire changes at terminal block. See wiring diagram 7264.

3. Field convertible to a reduced kw output (2/3 power connection). Requires jumper

wire changes at terminal block diagram 7264.

3 PHASE

208V 240V 480V 208V 240V

- - - 28.9 25.0

- - - 48.1 41.7

TOOLS

Standard

1 PHASE

See wiring

Model Designations

VPX3 - 3 pan capacity*



VPX5 - 5 pan capacity*



*based on 2.5 inch pan depth

Exterior Dimensions

VPX3 - 21"w x 25"d x 25" h*



VPX5 - 21"w x 25"d x 31.5" h*



*Includes 4" legs and 2" steam vent height

SPECIFICATIONS

Water Requirements

Use "potable" tap water that meets the following specifications:

  



Special



 



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Standard set of hand tools Clear silicone sealant VOM with an AC current tester (any qualit y

VOM with a sensitivity of at least 20, 000 ohms per volt can be used)

Temperature meter & thermocouple

Thermal Transfer Compound, Dow Corning 340 P/N 819643-2 or equivalent

: The additional tools below are required

NOTE

if replacing heating element assembly. Torque wrench (in-lb.) Tile Trowel 3/16" x 5/32" V notch; Grainger

catalog stock number 5LG08 or equivalent Loctite 271 or equivalent

F25111 (March 2002)

VPX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS

REMOVAL AND REPLACEMENT OF PARTS

COVERS AND PANELS

WARNING:

POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED.

Right Side Panel

1. Remove screws from bottom of panel.

2. Slide panel down to clear top cover.

DISCONNECT THE ELECTRICAL

4. Pull the combination left side and rear panel off.

5. Reverse procedure to install.

Lower Front Cover

1. Remove screws from the lower front cover.

3. Reverse procedure to install.

Top Cover

1. Remove screws from the top rear of cover.

2. Push up on rear of cover to clear steam vent pipe and slide forward to clear the front lip.

3. Lift the cover off the cabinet.

4. Reverse procedure to install.

Left Side and Rear Panel

1. Remove top cover as outlined under "TOP COVER".

2. Disconnect electrical supply at terminal block.

3. Remove screws at bottom of panel.

2. Open the door, cut the bead of silicone at the top rear of cover then remove cover.

3. Clean silicone residue from mating surfaces.

4. Reverse procedure to install and apply silicone sealant at the top rear of cover.

COMPONENT PANEL

COMPONENTS

WARNING:

POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED.

1. Remove right side panel as outlined under "COVERS AND PANELS".

2. Disconnect lead wires to component being replaced.

3. Remove component.

NOTE:

and remove nut from shaft.

DISCONNECT THE ELECTRICAL

To remove temperature control, pull knob off

F25111 (March 2002)

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VPX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS

4. Reverse procedure to install replacement component and check steamer for proper operation.

NOTE:

"TEMPERATURE CONTROL CALIBRATION ADJUSTMENT FOR ELEVATION" in "SERVICE PROCEDURES AND ADJUSTMENTS".

If replacing temperature control, see

TIMER

WARNING:

POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED.

DISCONNECT THE ELECTRICAL

3. Grasp thermostat body and push up to slide holding tabs out from mounting bracket.

4. Apply a small amount of "thermal transfer compound" to the mating surface (disk side) of the replacement thermostat.

A. Spread the compound completely and

evenly over the surface of the thermostat.

5. Reverse procedure from step 3 to install and check steamer for proper operation.

1. Remove right side panel as outlined under "COVERS AND PANELS".

2. Disconnect lead wires to timer.

3. Loosen two set screws on dial and pull timer knob from shaft.

4. Remove nut from timer shaft and remove timer.

5. Reverse procedure to install.

STANDBY THERMOSTAT

WARNING:

POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED.

1. Remove right side panel as outlined under "COVERS AND PANELS".

2. Pull insulation back to expose standby thermostat and disconnect lead wires.

DISCONNECT THE ELECTRICAL

HIGH LIMIT THERMOSTAT

WARNING:

POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED.

1. Remove right side panel as outlined under "COVERS AND PANELS".

2. Pull insulation back to expose high limit thermostat and disconnect lead wires.

DISCONNECT THE ELECTRICAL

3. Remove thermostat from heating element

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assembly.

F25111 (March 2002)

VPX SERIES STEAMERS - REMOVAL AND REPLACEMENT OF PARTS

NOTE:

threaded stem.

4. Apply a small amount of "thermal transfer

5. Reverse procedure from step 3 to install and

NOTE:

limit or damage to the mounting threads may occur.

Thermostat base is a brass 5/8" hex with a

compound" to the mating surface (disk side) of the replacement thermostat.

A. Spread the compound completely and

evenly over the surface of the thermostat.

check steamer for proper operation.

Do not cross thread or over tighten the high

TEMPERATURE PROBE

WARNING:

POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED.

1. Remove all covers and panels as outlined under "COVERS AND PANELS".

2. Disconnect probe leads from the temperature control.

DISCONNECT THE ELECTRICAL

NOTE:

sheets of insulation from top, rear and left side, and the bottom. Retain insulation for use during reassembly.

1. Remove all covers and panels as outlined

2. From the rear, tilt steamer until it rests on door.

3. Grasp component panel and remove screws

As the steamer is disassembled, remove the

under "COVERS AND PANELS".

A. Place wooden blocks opposite door handle

to level and support steamer.

securing it to the base. A. Lower component panel and leave at the

side of steamer so that all the component lead wires can remain connected.

3. Remove temperature probe from steam vent pipe.

4. Reverse procedure to install replacement probe.

5. Adjust temperature control as outlined under "TEMPERATURE CONTROL CALIBRATION" in "SERVICE PROCEDURES AND ADJUSTMENTS".

HEATING ELEMENT ASSEMBLY

WARNING:

POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED.

DISCONNECT THE ELECTRICAL

4. Remove screws securing base to steamer support frame.

The heating element assembly contains three elements molded into a cast aluminum block. The block is mounted on the underside of cooking compartment.

F25111 (March 2002)

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