Vulcan-Hart VSX3E User manual

A product of VULCAN-HART LOUISVILLE, KY 40201-0696
Form 24618 (Rev.A, March 2000)
- NOTICE -
This Manual is prepared for the use of trained Vulcan Service
Technicians and should not be used by those not properly
qualified. If you have attended a Vulcan Service School for this
product, you may be qualified to perform all the procedures
described in this manual.
This manual is not intended to be all encompassing. If you have
notattendedaVulcan Service School forthisproduct, you should
read, in its entirety, the repair procedure you wish to perform to
determine if you have the necessary tools, instruments and skills
required to perform the procedure. Procedures for which you do
not have the necessary tools, instruments and skills should be
performed by a trained Vulcan Service Technician.
Reproduction or other use of this Manual, without the express
written consent of Vulcan, is prohibited.
MODEL VSX3E SHOWN
SERVICE MANUAL
VSX SERIES CONVECTION STEAMERS
(ELECTRIC AND GAS)
VSX3E ML-52396 VSX10EC ML-114824
VSX3E ML-52397 VSX10EO ML-114823
VSX4E ML-52398 VSX5G ML-114946
VSX5E ML-52399 VSX5GC ML-114947
VSX7EC ML-114822 VSX7GC ML-114949
VSX7EO ML-114821 VSX10GC ML-114949

VSX SERIES STEAMERS
Page 2 of 40
TABLE OF CONTENTS
GENERAL............................................................................. 3
Introduction ........................................................................ 3
Specifications ...................................................................... 4
ElectricSteamers................................................................ 4
GasSteamers .................................................................. 4
Tools ............................................................................. 5
ControlLocation..................................................................... 5
Water Conditioning .................................................................. 5
REMOVALANDREPLACEMENTOFPARTS ................................................. 6
Covers and Panels ................................................................... 6
Thermostats........................................................................ 7
Timer............................................................................. 9
HeatingElements(Electric) ............................................................ 9
Gas Solenoid Valve .................................................................. 9
Gas Pressure Regulator .............................................................. 11
Flame Sense Probe (Gas) ............................................................ 11
WaterLevelControlBoard............................................................ 11
HotSurfaceIgnitor(Gas)............................................................. 12
GasBurner ....................................................................... 12
Gas Ignition Module ................................................................. 13
Steam Generator Tank .............................................................. 13
Water Level Probes ................................................................. 14
Fill and Cold Water Solenoid Valves .................................................... 15
DrainValve ....................................................................... 16
Door............................................................................. 18
SERVICEPROCEDURESANDADJUSTMENTS .............................................. 20
Steam Generator Cleaning ........................................................... 20
Delime Board Operation and Adjustment ................................................. 20
ControlThermostatAdjustment ........................................................ 20
Drain Tank Manually ................................................................ 21
DoorSealingAdjustment ............................................................. 22
DoorLatchAdjustment............................................................... 22
ManifoldPressureAdjustment ......................................................... 23
Flame Sense Probe (Gas) ............................................................ 24
HotSurfaceIgnitor(Gas)............................................................. 25
HeatingElement(Electric)............................................................ 25
ELECTRICALOPERATION .............................................................. 26
Component Function ................................................................ 26
Component Location ................................................................ 28
Electric Models ................................................................. 28
Gas Models ................................................................... 29
WaterLevelControlOperation ........................................................ 30
Sequence of Operation .............................................................. 30
Electric Models ................................................................. 30
Gas Models ................................................................... 32
SchematicElectricSteamers.......................................................... 34
WiringDiagramElectricSteamers...................................................... 35
SchematicGasSteamers ............................................................ 36
WiringDiagramGasSteamers ........................................................ 37
TROUBLESHOOTING .................................................................. 38
All Models ........................................................................ 38
Gas Models Only ................................................................... 40
© VULCAN 2000

VSX SERIES STEAMERS -GENERAL
Page 3 of 40
VSX7EC VSX5G
VSX7EO VSX5GC
GENERAL
INTRODUCTION
General
This manual is applicable for all models listed on the cover page. Several models are pictured below for
reference.
Serial Number Break
Listed below, are the beginning serial numbers for each model when the solid state water level control (three
probe design) was added.
MODEL SERIAL
VSX-3 AP100704-9Q-4565
VSX-4 AP1007141-9Q-4615
VSX-5 AP1007555-11Q-5522
Steam Cooking
Pressure-less steamers offer an efficient way to produce many foods in small portions or larger 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 steaming compartment allows the operator to open and close the door, anytime during a cooking
cycle. The steam supply will shut off when the door is opened, then re-start when the door is closed.

VSX SERIES STEAMERS -GENERAL
Page 4 of 40
SPECIFICATIONS
Model Designations (based on 2.5 inch pan depth)

VSX3 - 3 pan unit.

VSX4 - 4 pan unit.

VSX5 - 5 pan unit.

VSX7 - Combination VSX3 and VSX4 unit.

VSX10 - Combination of two VSX5 units.
Electric Steamers
AMPERAGE
3 PHASE 1 PHASE
MODEL TOTAL
KW 208V 240V 480V 208V 240V
VSX3E 7.5 std. 20.9 18.1 9.0 36.1 31.3
10.0 opt. 27.8 24.1 12.1 48.1 41.7
VSX4E 10.0 27.8 24.1 12.1 48.1 41.7
VSX5E 15.0 41.6 36.2 18.1 72.2 62.5
VSX7E 17.5 48.7 42.2 21.1
VSX10E 30 83.2 72.4 36.2
Gas Steamers
INPUT
BTU/HR
MANIFOLD
PRESSURE
(INCHES W.C.)
LINE PRESSURE
(INCHES W.C.) LOAD
(WATTS)
AMPS
(MAX)
NATURAL PROPANE MAX
MODEL NAT. PROP. NAT. PROP. RECOMMEND MIN RECOMMEND MIN 120V
60HZ
VSX5G 45,000 45,000 3.5 5.0 7.0 5.0 11.0 7.0
14.0
180 1.5
VSX5GC 45,000 45,000 3.5 5.0 7.0 5.0 11.0 7.0 180 1.5
VSX7GC 90,000 90,000 3.5 5.0 7.0 5.0 11.0 7.0 360 3.0
VSX10GC 90,000 90,000 3.5 5.0 7.0 5.0 11.0 7.0 360 3.0
Water Supply

Supply pressure should be ........................ 20-80 psig

In line strainer for supply line (Supplied)

Total dissolved solids (TDS)* .................... less than 60 ppm

Total alkalinity ........................................... less than 20 ppm

Silica ......................................................... less than 13 ppm

Chloride .................................................... less than 30 ppm

PH factor ................................................... 7 to 8
(*17.1 ppm = 1 grain of hardness)

VSX SERIES STEAMERS -GENERAL
Page 5 of 40
(Gas Model Shown)
TOOLS
Standard

Standard set of hand tools.

VOM with an AC current tester (any quality
VOM with a sensitivity of at least 20,000 ohms
per volt can be used).

Gas leak checking equipment.
Special

CLR Treatment Kit (p/n 817634) - Used to
remove Calcium/Lime/Rust from a steam
generator tank.
CONTROL LOCATION
WATER CONDITIONING
Furnishing the steam generator with soft water to
reduce scale formation is important. Scale formation
will reduce steam output, cause premature
component failure, and shorten equipment life. Most
water supplies contain scale producing minerals
such as Calcium and Magnesium. As steam is
generated, the minerals remain and dissolve into
the water. As the concentration of these minerals
increases past a certain point, they precipitate from
the water and coat the inside of the tank, heating
elements, thermostat bulbs and water level probes.
Because of the high temperature of these surfaces,
the precipitated minerals bake onto them and
become very difficult to remove.
This phenomenon causes several problems:
1. Reduce the heat transfer efficiency of the
heaters.
2. Cause premature failure of the heaters.
3. Water level probes will give false readings.
4. Thermostat bulbs will sense temperature
incorrectly.
These problems are common to any manufacturer's
steamer regardless of design, but they can all be
prevented by furnishing the steam generator tank
with soft water. Vulcan recommends the water
contain less than 60ppm of “total dissolved solids”
(TDS) and have a PH factor between 7 to 8. These
water properties can be achieved by using a
properly maintained water softener.
Other chemical properties in water supplies can also
affect good steam generation and vary from within
each state and locality.
The water level probes in the steam generator tank
use ions in the water to detect the water level. Do
not use fully demineralized or de-ionized water
since it is "non conductive" and the water level can
not be detected.
NOTE: The use of strainers, or fibers will not
remove minerals from the water.
Therefore, it is recommended that a local water
treatment specialist be consulted before the
installation of any steam generating equipment.
Steamers that operate over a long period of time
without the benefit of a water softener, which have
developed a heavy scale build up, should be
cleaned before using a water softener.

VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS
Page 6 of 40
(Gas Model Shown)
REMOVAL AND REPLACEMENT OF PARTS
COVERS AND PANELS
WARNING: DISCONNECT THE ELECTRICAL
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 the bottom of the panel.
2. Slide panel down to clear the top cover.
3. Reverse procedure to install.
Top Cover
1. Remove screws from the top rear of cover. If
steamer is a gas model, follow steps 1A and 1B.
A. Remove the screws at the base of the
exterior flue housing and lift off.
B. Remove the screws that secure the flue to
the tank and lift it off.
2. Push up on the rear of the cover and slide the
top cover forward to clear the front edge.
3. Lift the cover off the cabinet.
4. Reverse procedure to install.
Left Side and Rear Panel
1. Remove the top cover screws an disconnect the
utilities.

VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS
Page 7 of 40
2. Remove the screws at the bottom of panel.
3. Remove the lower access panels on the right
and left side of the unit to gain access to the
lower compartment.
4. Remove the screws Inside the lower
compartment that run along the top rear of the
base frame that secure the lip of the rear panel.
NOTE: Rear panel lip is “sandwiched”between the
base frame and the top lip of the small rear access
panel.
5. Pull the combination left side and rear panel off.
6. Reverse procedure to install.
THERMOSTATS
WARNING: DISCONNECT THE ELECTRICAL
POWER TO THE MACHINE AT THE MAIN
CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT
BOX INDICATING THE CIRCUIT IS BEING
SERVICED.
1. Turn “off”the water supply and allow hot parts to
cool down if necessary.
2. Remove the right side panel as outlined under
"COVERS AND PANELS".
3. Manually drain the steam generator tank if
necessary, as outlined in "DRAIN TANK
MANUALLY”.
4. Disconnect the lead wires from thermostat being
replaced.
5. Remove screws that secure the thermostat.
6. If replacing the control thermostat, fully loosen
the compression nut, sliding it away from tank,
then remove the bulb.
NOTE: When installing, do not over tighten as
thermostat calibration and/or damage to thermostat
may occur.

VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS
Page 8 of 40
7. If replacing the high limit thermostat:
A. Electric Models
1) Remove nut on capillary tube hold down
clamp.
2) Fully loosen the small capillary tube
compression nut and slide it away from
heater.
3) Remove large capillary nut from heater
base plate and slide it away from
heater.
4) Remove the remaining nuts that secure
heater to the tank and pull heater out
just enough to expose the holding
sleeve on the element and the bulb.
NOTE: Cut the wire ties holding the heater lead
wires together so the heating element can be pulled
out without disconnecting the lead wires.
5) Pull the bulb from its holding sleeve and
remove from the heater.
B. Gas Models
1) Remove the nuts securing the
thermostat to the tank surface plate and
lift it off.
8. Reverse the procedure to install the new
thermostat and check for proper operation as
outlined under "CONTROL THERMOSTAT
ADJUSTMENT".

VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS
Page 9 of 40
TIMER
WARNING: DISCONNECT THE ELECTRICAL
POWER TO THE MACHINE AT THE MAIN
CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT
BOX INDICATING THE CIRCUIT IS BEING
SERVICED.
1. Remove the right side panel as outlined under
"COVERS AND PANELS".
2. Pull timer knob from shaft.
3. Disconnect lead wires to timer.
4. Remove nut from timer shaft and remove timer
from the unit.
5. Reverse the procedure to install.
HEATING ELEMENTS
(ELECTRIC)
WARNING: DISCONNECT THE ELECTRICAL
POWER TO THE MACHINE AT THE MAIN
CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT
BOX INDICATING THE CIRCUIT IS BEING
SERVICED.
1. Turn “off”the water supply and allow hot parts to
cool down if necessary.
2. Remove the right side panel as outlined under
"COVERS AND PANELS".
3. Manually drain steam generator tank if
necessary, as outlined under "DRAIN TANK
MANUALLY".
4. Disconnect the heater lead wires and remove
the high limit thermostat bulb from heater as
outlined under “THERMOSTATS”.
5. Remove the nuts that secure the heater to the
tank and remove the heater from the unit.
6. Reverse procedure to install.
GAS SOLENOID VALVE
WARNING: DISCONNECT THE ELECTRICAL
POWER TO THE MACHINE AT THE MAIN
CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT
BOX INDICATING THE CIRCUIT IS BEING
SERVICED.
WARNING: SHUT OFF THE GAS SUPPLY
BEFORE SERVICING THE UNIT.
WARNING: ALL GAS JOINTS DISTURBED
DURING SERVICING MUST BE CHECKED FOR
LEAKS. CHECK USING A SOAP AND WATER
SOLUTION (BUBBLES). DO NOT USE AN OPEN
FLAME.
A. BEFORE LIGHTING UNIT, CHECK ALL
JOINTS PRIOR TO THE GAS VALVE
(SOLENOID).
B. CHECK ALL JOINTS BEYOND GAS
VALVE (SOLENOID) AFTER THE UNIT
HAS LIT.
1. Remove the right side panel as outlined under
"COVERS AND PANELS".
2. Cut the wire ties around “wire bundle”and trace
the solenoid wires to there terminations and
remove.

VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS
Page 10 of 40
(VSX5G SHOWN)
3. Loosen the compression nuts on the flexible gas
line then remove line from the gas solenoid
valve and manifold.
4. If removing gas valve from a single unit,
proceed to step 5. If removing gas solenoid
valve from a double unit, proceed to step 6.
5. Turn “off”the water supply to the “tank fill”and
“cold water condenser”solenoids and
disconnect the fittings (bulkhead union) on the
opposite end of the incoming water
connections.
A. To access the compression fittings for the
incoming water connection, remove the
small access panel to the lower
compartment.
B. Loosen the compression nuts on the
“condenser feed”and “tank feed”water lines
and place the lines to the side.
NOTE: If necessary, loosen the remaining
compression nut on the “cold water condenser”
solenoid and rotate it out of the way.
6. Open the lower cabinet base door to gain
access the gas solenoid valves.
7. Remove the gas solenoid valve from the pipe
nipple below it.
8. Reverse procedure to install and check unit for
proper operation.

VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS
Page 11 of 40
GAS PRESSURE REGULATOR
WARNING: DISCONNECT THE ELECTRICAL
POWER TO THE MACHINE AT THE MAIN
CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT
BOX INDICATING THE CIRCUIT IS BEING
SERVICED.
WARNING: SHUT OFF THE GAS SUPPLY
BEFORE SERVICING THE UNIT.
WARNING: ALL GAS JOINTS DISTURBED
DURING SERVICING MUST BE CHECKED FOR
LEAKS. CHECK USING A SOAP AND WATER
SOLUTION (BUBBLES). DO NOT USE AN OPEN
FLAME.
A. BEFORE LIGHTING UNIT, CHECK ALL
JOINTS PRIOR TO THE GAS VALVE
(SOLENOID).
B. CHECK ALL JOINTS BEYOND GAS
VALVE (SOLENOID) AFTER THE UNIT
HAS LIT.
1. Remove the right side panel as outlined under
"COVERS AND PANELS".
2. Remove the gas solenoid valve as outline under
“GAS SOLENOID VALVE”.
3. Remove the gas pressure regulator from the
pipe nipple below it.
4. Reverse the procedure to install.
5. Adjust the gas regulator pressure as outlined
under “MANIFOLD PRESSURE
ADJUSTMENT”.
6. Check unit for proper operation.
FLAME SENSE PROBE (GAS)
WARNING: DISCONNECT THE ELECTRICAL
POWER TO THE MACHINE AT THE MAIN
CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT
BOX INDICATING THE CIRCUIT IS BEING
SERVICED.
WARNING: SHUT OFF THE GAS SUPPLY
BEFORE SERVICING THE UNIT.
1. Cut the wire ties around “wire bundle”and trace
the Flame Sense Probe (FSP) wire to an in-line
splice (butt connector) and cut the wire close to
the connector.
2. Remove the screw holding the flame sense
probe onto the mounting bracket and lift out.
3. Reverse the procedure to install a new probe
then check FSP for proper operation as outlined
under “FLAME SENSE PROBE”.
NOTE: The opposite end of the in-line splice will
have to be cut close to the connector and the wire
insulation stripped back approximately 0.250 inch to
install a new connector.
WATER LEVEL CONTROL
BOARD
WARNING: DISCONNECT THE ELECTRICAL
POWER TO THE MACHINE AT THE MAIN
CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT
BOX INDICATING THE CIRCUIT IS BEING
SERVICED.
1. Remove the right side panel as outlined under
"COVERS AND PANELS".
2. Disconnect the lead wires from the water level
control board (WLC).
3. Remove mounting screws.
4. Move board to the left and rotate outwards when
removing, to clear wire bundle.
5. Reverse the procedure to install, then check unit
for proper operation.

VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS
Page 12 of 40
HOT SURFACE IGNITOR (GAS)
WARNING: DISCONNECT THE ELECTRICAL
POWER TO THE MACHINE AT THE MAIN
CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT
BOX INDICATING THE CIRCUIT IS BEING
SERVICED.
WARNING: SHUT OFF THE GAS SUPPLY
BEFORE SERVICING THE UNIT.
1. Remove the right side panel as outlined under
"COVERS AND PANELS".
2. Cut the wire ties around “wire bundle”and trace
the wire for the Hot Surface Ignitor (HSI) to an
in-line splice (butt connector) and cut the wire
off close to the connector.
3. Remove the screw that holds the flame sense
probe and ground terminal wire onto the
mounting bracket and lift out.
4. Reverse the procedure to install then check HSI
for proper operation as outlined under “HOT
SURFACE IGNITOR”.
NOTE: The opposite end of the in-line splice will
have to be cut, close to the connector and the wire
insulation stripped back approximately 0.250 inch to
install a new connector.
GAS BURNER
WARNING: DISCONNECT THE ELECTRICAL
POWER TO THE MACHINE AT THE MAIN
CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT
BOX INDICATING THE CIRCUIT IS BEING
SERVICED.
1. Remove the right side panel as outlined under
"COVERS AND PANELS".
2. Remove the screws securing the burner
mounting bracket to the burner box frame.
3. Slide the burner forward enough to clear the gas
nozzles and lift it out.
4. Remove the screws securing the burners to the
mounting bracket and lift the burners off.
5. Reverse procedure to install then check for
proper operation.
NOTE: When checking for proper operation, make
sure burner flame is not impinging on the opening of
the burner box.

VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS
Page 13 of 40
(Electric Model Shown)
GAS IGNITION MODULE
WARNING: DISCONNECT THE ELECTRICAL
POWER TO THE MACHINE AT THE MAIN
CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT
BOX INDICATING THE CIRCUIT IS BEING
SERVICED.
1. Remove the right side panel as outlined under
"COVERS AND PANELS".
2. Disconnect the control wires by pulling off wire
harness connector located on the right side of
module.
3. Remove screws that secure the module to the
control board and lift off.
4. Reverse the procedure to install the new gas
ignition module then check for proper operation.
STEAM GENERATOR TANK
WARNING: DISCONNECT THE ELECTRICAL
POWER TO THE MACHINE AT THE MAIN
CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT
BOX INDICATING THE CIRCUIT IS BEING
SERVICED.
1. Turn “off”the water supply and allow hot parts to
cool down if necessary. On gas models, shut the
gas supply “off”to the unit.
2. Remove the right side panel and top cover as
outlined under "COVERS AND PANELS".
3. Manually drain steam generator tank if
necessary, as outlined under "DRAIN TANK
MANUALLY".
4. Disconnect the lead wire from each water level
probe and then remove probes from tank. Mark
probes accordingly for replacement.

VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS
Page 14 of 40
(Gas Model Shown)
(Electric Model Shown)
5. Disconnect the steam lines on the top right and
left side of the tank, the water fill tube, the drain
line, then the delime line at the bottom left
corner.
6. Electric Models Only - For gas models proceed
to step 7.
A. Remove the heater lead wires, control and
high limit thermostat bulbs, then remove the
heater from the tank.
B. To remove tank, loosen the nut on the left
side mounting stud of the tank and remove
the two nuts from the mounting studs on the
right side of the tank.
C. Push the right side of the tank toward the
rear of the unit enough to clear the studs
from the mounting bracket then, pull tank
toward the right to remove.
D. Reverse the procedure to install and check
unit for proper operation.
7. Gas Model Only
A. Remove the burner assembly and place to
the side.
B. Remove the bolts that secure the manifold
to the burner box frame and place to the
side.
C. Remove the surface high limit and the
control thermostat bulb from the tank.
D. Remove the combination Left side and Rear
panel as outlined under “COVERS AND
PANELS”.
8. Remove the nuts and washers from studs on
each side of the tank that secure it to the steam
cavity and lift the steam generator tank out.
9. Reverse procedure to install and check unit for
proper operation.
WATER LEVEL PROBES
WARNING: DISCONNECT THE ELECTRICAL
POWER TO THE MACHINE AT THE MAIN
CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT
BOX INDICATING THE CIRCUIT IS BEING
SERVICED.
1. Remove the top cover as outlined under
"COVERS AND PANELS".
2. Disconnect the lead wire to water level probes.

VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS
Page 15 of 40
(Gas Model)
(Gas Model Shown)
(Electric Model)
3. Unscrew probes from steam generator tank.
NOTE: Probe should be cleaned thoroughly.
Remove all accumulated deposits from the insulator
using a soft cloth.
NOTE: Do not use anything abrasive on the
insulators.
NOTE: If the probes are dirty, delime the unit after
assembling.
4. Reverse procedure to install.
NOTE: Perform a steam generator tank cleaning as
outlined under "STEAM GENERATOR TANK
CLEANING".
FILL AND COLD WATER
SOLENOID VALVES
WARNING: DISCONNECT THE ELECTRICAL
POWER TO THE MACHINE AT THE MAIN
CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT
BOX INDICATING THE CIRCUIT IS BEING
SERVICED.
Removal
1. Turn “off”the water supply to the steamer.
2. Remove the right side panel as outlined under
"COVERS AND PANELS".
3. Cut the wire ties around “wire bundle”and trace
the power wires for the solenoid valve being
serviced back to there terminations and remove.
4. Disconnect the fittings on each side of the valve
and remove the valve from the unit.
5. Reverse procedure to install.
Disassembly
NOTE: It is recommended that the valve be
removed from the unit for cleaning to prevent
damage to the lines and fittings when the stem is
removed from the body.
1. Remove the coil assembly from the valve stem.
2. Disconnect the fittings on each side of the valve
and remove it from the unit. Read note before
removing.
NOTE: If a standard or adjustable spanner wrench
that fits these solenoids is available, the body of the
valve might be held with vise grips and then,
remove the stem with your spanner wrench. If this
can be done without damaging the line or fittings,
proceed to step 5.
3. Clamp the body of the valve in a vise.
4. Mark a scribe line on the stem nut to the valve
body for proper retightening.

VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS
Page 16 of 40
5. Use a hammer and punch to turn the stem
counterclockwise to remove the stem from the
body.
6. All parts are now accessible for inspection and
cleaning.
A. Check rubber seal on bottom of plunger.
B. Check plunger spring.
C. Check "O"ring in valve body.
D. Check ports in valve body.
7. Reverse procedure to install.
DRAIN VALVE
WARNING: DISCONNECT THE ELECTRICAL
POWER TO THE MACHINE AT THE MAIN
CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT
BOX INDICATING THE CIRCUIT IS BEING
SERVICED.
Removal
1. Turn “off”the water supply to the steamer.
2. Remove the right side panel and top cover as
outlined under "COVERS AND PANELS".
3. Manually drain the steam generator tank if
necessary, as outlined under "DRAIN TANK
MANUALLY".
4. Disconnect the lead wires from the water level
control and the ground wire from the control
panel if necessary, to access the drain valve
connections.
5. Disconnect the fittings on each side of the valve
and remove the valve from the unit.
6. Reverse procedure to install.
Disassembly
1. Turn “off”the water supply to the steamer.
2. Remove the right side panel as outlined under
"COVERS AND PANELS".
3. Manually drain the steam generator tank if
necessary, as outlined under "DRAIN TANK
MANUALLY".
4. Remove the cover from the drain valve motor.

VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS
Page 17 of 40
5. Loosen the screws from the motor assembly
and lift up on the motor to remove it from the
valve body.
6. Remove the screws from the cover plate and
remove the cover plate and ball assembly from
the valve body.
NOTE: When re-installing, place flat sides of ball
stem perpendicular to the inlet and outlet of the
drain valve. The valve will be in the open position
whenever power is removed from the motor.
7. Reverse procedure to install.

VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS
Page 18 of 40
DOOR
WARNING: DISCONNECT THE ELECTRICAL
POWER TO THE MACHINE AT THE MAIN
CIRCUIT BOX. PLACE A TAG ON THE CIRCUIT
BOX INDICATING THE CIRCUIT IS BEING
SERVICED.
Removal
1. Remove top cover as outlined under "COVERS
AND PANELS".
2. Open the door.
3. Pull hinge rod up.
4. Reverse the procedure to install, making sure
the door bushings are in place.
Gasket
1. Open the door.
2. Remove screws from the gasket plate.
3. Pull the gasket plate out from the door housing
and remove the gasket.
4. Position the new gasket on the gasket plate and
reverse the procedure to install. Adjust the door
as outlined under "DOOR SEALING
ADJUSTMENT".
NOTE: Do not over tighten gasket plate screws as
this will compress the gasket excessively and
interfere with proper door sealing.

VSX SERIES STEAMER - REMOVAL AND REPLACEMENT OF PARTS
Page 19 of 40
Handle
1. Open the door.
2. Remove screws from the top and bottom of the
door.
3. Pull the “inner”door panel out from the door
housing with the gasket plate and gasket still
attached.
4. Remove the nuts and spacers from the handle
screws and remove the handle from the door.
NOTE: When installing the spacers, the smaller
diameter fits into the slot in the door and the latch
lever must rest on top of the handle latch screw.
5. Reverse procedure to install.
Latch Assembly
1. Open the door.
2. Remove screws from the top and bottom of the
door.
3. Pull the “inner”door panel out from the door
housing with the gasket plate and gasket still
attached.
4. Remove the screws from the side edge of the
door that secure the latch mechanism and
remove the latch from the door.
NOTE: When installing, the latch lever must rest on
top of the handle latch screw.
5. Reverse procedure to install.

VSX SERIES STEAMER - SERVICE PROCEDURES AND ADJUSTMENTS
Page 20 of 40
SERVICE PROCEDURES AND ADJUSTMENTS
WARNING: CERTAIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TEST OR
MEASUREMENTS WHILE POWER IS APPLIED TO THE MACHINE. EXERCISE EXTREME CAUTION AT ALL
TIMES. IF TEST POINTS ARE NOT EASILY ACCESSIBLE, DISCONNECT POWER, ATTACH TEST
EQUIPMENT AND REAPPLY POWER TO TEST.
STEAM GENERATOR CLEANING
Follow the procedure as outlined in the "CLR
TREATMENT KIT" to remove the
Calcium/Lime/Rust build-up inside the tank, water
level probes, electric elements and drain system.
The CLR Kit contains, C.L.R. cleaner, funnel,
measuring cup, and
G
" tubing.
In addition but not furnished in kit, rubber gloves
should be used.
DELIME BOARD OPERATION
AND ADJUSTMENT
The delime timer board tracks the cumulative
cooking hours and lights the delime light on the
control panel when the delime timer board reaches
a preset number of cooking hours. An LED on the
delime timer board lights indicating cook time hours
are accumulating.
After the delime timer board has accumulated the
preset number of cooking hours, the delime light will
light. It will stay lit until the power switch is moved to
the delime position or off. If the power switch is
turned “off”and then turned “on”without going to the
delime position, the delime light will relight.
1. To adjust the length of cooking hours before the
delime light will come on:
2. Access the delime timer board.
Position the switches in the “on”or “off”position to
obtain the desired hours. The number of switches
that are positioned “on”or “off”set the total hours. It
does not matter which individual switch is “on”or
“off”.HRS 30 50 100 150 200
SWITCH
POSITION ON 0123ALL
OFF ALL 3 2 1 0
NOTE: Factory default time set on the board is 100
hrs.
CONTROL THERMOSTAT
ADJUSTMENT
The procedure outlined below is to adjust the
thermostat temperature setting to a “ready”state
which is slightly below a continuous boil, (212°F) to
achieve the best “cooking”and steamer
performance.
When a cooking time is set on the timer, the delay
time for the steam generator to deliver a high quality
and volume of steam into the cooking compartment
will be minimal.
Correctly identifying the amount of steam coming
out of the ports is subjective. To help determine this,
does the steam coming out of the ports exhibit the
following:
1. Appear to be coming out under pressure.
2. Create a distinctive “whistling”sound during
steaming.
3. Produce a good “cloud”of steam in the cooking
compartment.
If the steaming meets the above criteria, the
thermostat is set correctly.
1. Remove the right side panel as outlined under
"COVERS AND PANELS.”