Stero Dishwasher STPCW-AR Installation Manual
INSTALLATION &
OPERA TION MANUAL
FLIGHT TYPE
DISHWASHERS
MODELS
STPC
STPCW
STPCW-D
STBUW
For additional information on Stero or to locate an authorized part s and
service provider in your area, visit our website at www.stero.com.
STERO, A DIVISION OF ILLINOIS TOOL WORKS INC.
WWW.STERO.COM
3200 LAKEVILLE HWY.
PETALUMA, CA 94954
Telephone: 800-762-7600
Fax: 707-762-5036
FLIGHT TYPE DISHWASHERS
IMPORTANT FOR YOUR SAFETY
ONL Y QUALIFIED PERSONNEL SHOULD PERFORM THE INITIAL FIELD ST ARTUP
AND ADJUSTMENTS OF THE EQUIPMENT COVERED BY THIS MANUAL.
READ THIS MANUAL THOROUGHL Y BEFORE OPERA TING , INST ALLING OR
PERFORMING MAINTENANCE ON THE EQUIPMENT .
Improper installation, adjustment, alteration, service or maintenance
can cause property damage, injury or death.
Post in a prominent location the instructions to be followed in the event the smell
of gas is detected. This information can be obtained from the local gas supplier .
IMPORT ANT
IN THE EVENT A GAS ODOR IS DETECTED, SHUT DOWN UNITS A T MAIN
SHUTOFF V ALV E AND CONTACT THE LOCAL GAS COMPANY OR GAS
SUPPLIER FOR SERVICE.
FOR YOUR SAFETY
Do not store or use gasoline or other flammable vapors or liquids in the
vicinity of this or any other appliance.
Shut off the gas before servicing the unit.
All gas joints disturbed during servicing must be checked for leaks.
Check with a soap and water solution (bubbles). Do not use an open flame.
Shut off the steam before servicing the unit.
Disconnect the electrical power to the machine and follow Lockout/
Tagout procedures. There may be multiple circuits. Be sure all circuits are
disconnected.
Electrical and grounding connections must comply with the applicable
portions of the National Electric Code and/or other local electrical codes.
UL73 grounding instructions: This appliance must be connected to
a grounded, metal, permanent wiring system; or an equipment-grounding
conductor must be run with the circuit conductors and connected to the
equipment-grounding terminal or lead on the appliance.
IN THE EVENT OF A POWER F AILURE,
DO NOT A TTEMPT TO OPERA TE THIS DEVICE.
— 2 —
FLIGHT TYPE DISHWASHERS
TABLE OF CONTENTS
IMPORTANT FOR YOUR SAFETY..................................................................................................2
GENERAL .........................................................................................................................................5
INTRODUCTION .........................................................................................................................5
LOCATION OF DATA PLATE.....................................................................................................5
TOOLS ........................................................................................................................................6
Standard ................................................................................................................................6
Special ...................................................................................................................................6
PRE-INSTALLATION...................................................................................................................6
Utility Connection Requirements..........................................................................................6
INSTALLATION..................................................................................................................................7
CODES AND STANDARDS .......................................................................................................7
UNCRATING................................................................................................................................7
ASSEMBLY..................................................................................................................................7
Load Section Installation.......................................................................................................8
Unload Section Installation ...................................................................................................9
Leveling............................................................................................................................... 11
Conveyor Peg Belt Installation .......................................................................................... 11
Conveyor Peg Belt Tension Adjustment........................................................................... 13
Conveyor Stop Bar Switch Electrical Connection ........................................................... 13
Curtain Installation ............................................................................................................. 14
VENTILATION DUCT CONNECTION (if required)................................................................. 14
Gas-Heated Dishwashers ................................................................................................. 14
Steam or Electric-Heated Dishwashers........................................................................... 14
Electrical Connections ....................................................................................................... 14
UTILITY CONNECTIONS......................................................................................................... 15
PLUMBING CONNECTIONS ............................................................................................. 15
Water Supply Connections.......................................................................................... 15
Drain Connections ....................................................................................................... 15
Steam Connections ..................................................................................................... 16
GAS CONNECTIONS ........................................................................................................ 16
Gas Lockout/Tagout Procedure .................................................................................. 16
ELECTRICAL CONNECTIONS......................................................................................... 17
Electrical Lockout/Tagout Procedures ........................................................................ 17
Main Electrical Supply...................................................................................................17
Chemical Supply Connections .................................................................................... 17
ADJUSTMENTS AND TESTS ....................................................................................................... 18
PUMP MOTOR CHECK........................................................................................................... 18
CONVEYOR BELT TENSION CHECK................................................................................... 18
V-BELT TENSION ADJUSTMENT .......................................................................................... 18
— 3 —
FLIGHT TYPE DISHWASHERS
OPERATION ................................................................................................................................. 20
OPERATING CONTROLS LOCATION................................................................................... 20
Push Button Control Box ................................................................................................... 20
LCD Control Box ................................................................................................................ 20
OPERATING CONTROLS FUNCTION................................................................................... 21
Push Button Control Box ....................................................................................................21
LCD Control Box .................................................................................................................21
RUN CYCLE..............................................................................................................................22
Push Button Control Box ................................................................................................... 22
LCD Control Box ................................................................................................................ 22
SHUTDOWN ............................................................................................................................ 23
Daily Shutdown................................................................................................................... 23
MAINTENANCE .............................................................................................................................. 24
PARTS REMOVAL ...................................................................................................................24
Scrapper Spray Manifold Removal.................................................................................... 24
Tree-Type Spray Manifold Removal.................................................................................. 24
Curtain Removal ................................................................................................................ 25
Strainer Pan Removal ....................................................................................................... 25
CLEANING ................................................................................................................................ 26
Interior ................................................................................................................................. 26
Spray Manifolds (Tree-Type and Scrapper) ..................................................................... 26
Curtains .............................................................................................................................. 26
Exterior................................................................................................................................26
STAINLESS STEEL CARE ...................................................................................................... 27
Cleaning.............................................................................................................................. 27
Preserving and Restoring.................................................................................................. 27
DELIMING ................................................................................................................................. 27
TROUBLESHOOTING................................................................................................................... 28
LCD DISPLAY MESSAGES..................................................................................................... 28
OPERATIONAL TROUBLESHOOTING.................................................................................. 29
PRODUCT SUPPORT AND SERVICE........................................................................................ 31
STERO WARRANTY ..................................................................................................................... 32
CALIFORNIA SAFE DRINKING WATER AND
TOXIC ENFORCEMENT ACT OF 1986, (PROP. 65) ..................................................................33
SERVICE AND INSTALLATION INSPECTION REPORT.............................................................35
— 4 —
GENERAL
FLIGHT TYPE DISHWASHERS
INTRODUCTION
Every Stero product is built with the highest
quality components and innovative features
that have established Stero’s reputation as
the food service industry’s warewashing
authority.
Stero Flight-Type dishwasher models include
the standard, STPC, the wide model STPCW,
and the STPCW-ER which features a two-
stage auxiliary rinse.
Automatic warewashers contain heaters that
maintain the proper water temperature in the
dishwasher tanks. These heaters use
electricity, steam or gas. As a general rule,
heaters maintain a tank temperature of 160ºF
(71ºC) to ensure sanitation. Hot water
sanitizing warewashing machines use a
booster heater to raise the incoming, general
purpose hot water to at least 180ºF (82ºC) for
the final sanitizing rinse.
LOCATION OF DATA PLATE
The data plate (Figure 1) is located on the
Main Electrical Control Box. This data plate
contains important information, including the
dishwasher model and serial number.
Always have the model and serial number
before calling for parts or service.
The NSF requires an established amount of
heat content to ensure sanitation. The water
pressure for this cycle must be 20 PSI.
The dishwasher consists of the following
operations:
• Power Scrapper
• Power Wash
• Power Rinse or EcoRinse
• Final Rinse
TM
Figure 1: Data Plate
— 5 —
FLIGHT TYPE DISHWASHERS
TOOLS
Standard
• Standard set of hand tools
• Gas leak detection equipment (gas-
heated equipment installation only)
• Gas pressure Manometer (gas-heated
equipment installation only)
Special
• NSF approved silicone sealant
• Torx security screwdriver (correctional
facility equipment only)
• Pipe joint compound
• At least 50 Ft of rope
(conveyor belt installation)
• Heavy–duty wire ties or bailing wire
(conveyor belt installation)
• Bubble level
• Floor jack
PRE-INSTALLATION
Utility Connection Requirements
Utility connections must be present and ready
for hook–up to the dishwasher. All utility
supplies must comply with the electrical
information labels, with the data plate, and
with all applicable local and national codes.
Electrical leads, water supply line(s), drain
line, gas and steam supply and condensate
return lines (if so equipped) must be present.
The water supply must match the pressure
and temperature specified on the data plate.
The steam or gas supply (if so equipped) must
match the pressure and volume specified on
the data plate.
For units using a chemical dispensing
system, appropriate dispensers or
containers should be installed and ready for
connection to the dishwasher.
— 6 —
INSTALLATION
FLIGHT TYPE DISHWASHERS
CODES AND STANDARDS
In the United States, the dishwasher must be
installed in accordance with:
• State and local codes
• National Fuel Gas Code, ANSI-Z83.21,
Commercial Dishwashing Machines
(latest edition)
• National Fuel Gas Code, ANSI Z223.1
(latest edition)
• National Fire Protection Association,
NFPA 54 (latest edition)
• Underwriters Laboratories standard UL
921, Commercial Dishwashers (latest
edition)
• National Electrical Code NEC/NFPA 70
(latest edition)
In Canada, the dishwasher must be installed
in accordance with:
Unless authorized by
Stero Customer Service or its authorized
agent, a damaged unit should not be
installed or operated.
To uncrate the dishwasher, perform the following:
The pallet should not be removed
until the dishwasher has been moved to its
installation area. Damage can occur from
improper lifting and uneven weight distribution.
Do not attempt to slide the dishwasher
on its feet. This can bend the legs.
1. Remove all shipping and packaging
material from the machine, including
supports and wrappings.
2. Leave the pallet in place to allow for easier
movement to the installation location.
3. Check for shipping damage as described
above.
• Local codes.
• Canadian Electrical Code Part 1 CSA
C22.1(latest edition)
• CAN/CSA-C22.2 Number 168,
Commercial Dishwashing Machines
(latest edition)
• CAN/CSA B149.1, Natural Gas and
Propane Installation (latest edition)
UNCRATING
NOTE: As you unpack the equipment, check
that all components shown on the shipping
invoice are present. Be sure to check for
shipping damage. If shipping damage is
present, contact Stero Customer Service at
1-800-762-7600 and provide customer details,
machine serial number and the extent of
damage. Stero will file a freight claim based
on this information.
Exercise care to avoid damaging
the dishwasher or its components.
4. Move the dishwasher to the installation
area and remove the pallet.
ASSEMBLY
If the dishwasher does not require assembly,
proceed to the LEVELING procedure.
NOTE: The dishwasher MUST be level for
proper operation.
If the dishwasher requires assembly, proceed
as follows:
1. When the main section of the dishwasher
has been moved to the installation area, use
a bubble level, check that the main section is
level both front to back and left to right.
2. To adjust level, screw the feet in or out
until the dishwasher is level both front to
back and left to right.
— 7 —
FLIGHT TYPE DISHWASHERS
3. Once the main section is level, position
the load section of the dishwasher near
the load end of dishwasher main section.
4. Position the unload section near the unload
end of the main dishwasher section.
NOTE: Not all access panel screws are
the same length. Place the screws back
into the holes to aid in correct panel
reinstallation and screw placement.
5. Tag and remove all the access panels
from the load section of the dishwasher
including the table and enclosure panels.
6. Tag and remove all the access panels
from the unload section of the dishwasher
including the table and enclosure panels.
7. Tag and remove all the access panels
from the main dishwasher section including
the water line enclosure panels and
electrical junction boxes.
Load Section Installation
To install the load section, proceed as follows:
1. Remove the 5/16" hex head bolts and
washers from the butt joint on the load
side of the main dishwasher section.
Retain for reinstallation.
Bolts
Washers
Lockwashers
Nuts
Figure 3: Load End Frame Mount
3. For dishwashers equipped with an
extended Vent Cowl, remove the 5/16" hex
nut and washer from each side of the vent
cowl and retain for reinstallation.
4. Remove the two (2) countersunk screws from
the main dishwasher load end R/H Belt Roller
Guard Extension. Retain for reinstallation.
5. Remove the two (2) countersunk screws from
the main dishwasher load end L/H Belt Roller
Guard Extension. Retain for reinstallation.
l
ow
ent C
V
Remove
bolts and
washers,
then
reinstall.
Figure 2: Load End Tank Mount
2. Remove the 3/8" hex bolts, hex nuts, flat
washers and lock washers from the main
dishwasher lower frame. Retain for
reinstallation.
— 8 —
er
ash
ishw
ection
D
ain S
M
Remove
4 screws,
then
reinstall.
To D
Load S
ishw
asher
ection
Figure 4: Load Belt
Roller Guard Extension
7. Remove and discard any shipping tape from
the load end drainpipe fitting and the main
dishwasher load end drainpipe connection.
8. Using a Stero and NSF approved silicone
sealant; apply a generous amount of
silicone sealant to the entire Load End
Butt Joint Gasket surface.
FLIGHT TYPE DISHWASHERS
Remove
bolts and
washers,
then
reinstall.
9. Check to make sure everything is lined up
properly, then carefully move the load
section into place with the main
dishwasher. Make sure the Roller Guard
Extensions and water line(s) are properly
aligned before proceeding.
10.Align the tank bolt mount holes by placing
a drift punch into the frame tabs.
11.Install, but DO NOT tighten, the 5/16" hex
bolts that were removed in step 6.
12.Apply pipe joint compound and connect,
but DO NOT tighten, the drainpipe
connection between the main dishwasher
and load end section.
13.Apply pipe joint compound and connect,
but DO NOT tighten, the water line
connection(s) located on the rear side of
the main dishwasher load end.
14. Reinstall, but DO NOT tighten, the 3/8"
frame hex bolts that were removed in step 7.
15. After checking to make sure all plumbing
and electrical connections are properly
aligned, tighten all the 5/16" butt joints bolts
and 3/8" frame bolts.
19.Reinstall the Roller Guard Extension
countersunk screws removed in steps 9
and 10.
20.Route the wires from the load end remote
START/STOP switch through the sealtite
connection on the junction box mounted
on the main dishwasher.
21.Connect the four (4) wire connectors by
matching either the wire colors or the wire
numbers.
22. Connect all supply connections observing
National and local code requirements.
NOTE: Do not reinstall the access panels at
this time.
Unload Section Installation
To install the unload section, proceed as follows:
1. Remove the 5/16" hex head bolts and
washers from the butt joint on the unload
side of the main dishwasher section.
Retain for reinstallation.
16. Once the butt joint bolts and frame bolts
have been tightened, tighten all remaining
plumbing connections.
17. For dishwashers equipped with an extended
Vent Cowl, reinstall the two (2) 5/16" hex
nuts and washers removed in step 3.
18. For rear access dishwashers, make sure
the Splash Back Panel is properly installed
and secured to the load section as illustrated.
Install
Splash Panel
Figure 5: Splash Back Panel Installation
over two (2) pins
Figure 6: Unload End Tank Mount
2. Remove the 3/8" hex bolts, hex nuts, flat
washers and lock washers from the main
dishwasher lower frame. Retain for
reinstallation.
— 9 —
FLIGHT TYPE DISHWASHERS
OPEN
SHU
OPEN
SHU
Bolts
Washers
Lockwashers
Nuts
Figure 7: Unload End Frame Mount
8. Check to make sure everything is lined up
properly, then carefully move the unload
section into place with the main dishwasher.
Make sure the Roller Guard Extensions and
U
U
H
H
S
S
N
N
E
E
P
P
O
O
water line(s) are properly aligned before
proceeding.
9. Install, but DO NOT tighten, the 5/16" hex
bolts that were removed in step 6.
10.Apply pipe joint compound and connect,
but DO NOT tighten, the drainpipe
connection between the main dishwasher
and unload end sections.
3. For dishwashers equipped with an exte
nded Vent Cowl, remove the 5/16" hex nut
and washer from each side of the vent
cowl. Retain for reinstallation.
4. Remove the two (2) countersunk screws
from the main dishwasher unload end R/H
Belt Roller Guard Extension. Retain for
reinstallation.
5. Remove the two (2) countersunk screws
from the main dishwasher unload end L/H
Belt Roller Guard Extension. Retain for
reinstallation.
D
is
h
M
w
a
a
in
s
h
S
e
e
r
c
tio
n
Remove
4 screws,
then
reinstall.
T
o
D
U
is
n
h
lo
w
a
a
d
s
S
h
e
e
r
c
tio
n
11.Apply pipe joint compound and connect,
but DO NOT tighten, the water line
connection(s).
12. After checking to make sure all plumbing
and electrical connections are properly
aligned, tighten all the 5/16" butt joints
bolts and 3/8" frame bolts.
13. Once the butt joint bolts and frame bolts
have been tightened, tighten all remaining
plumbing connections.
14.Reinstall the Roller Guard Extension
countersunk screws removed in steps 9
and 10.
15.Route the pump motor wires and remote
START/STOP switch wires from the main
dishwasher section unload end through
the sealtite connection on the junction box
mounted to the unload section.
16 . Connect the wire connectors by matching
either the wire colors or the wire numbers.
17.For dishwashers equipped with an
extended Vent Cowl, reinstall the two (2)
5/16" hex nuts and washers removed in
step 8.
Figure 8: Unload Belt
Roller Guard Extension
6. Remove and discard any shipping tape from
the unload end drainpipe fitting and the main
dishwasher unload end drainpipe connection.
7. Using a Stero and NSF approved silicone
sealant; apply a generous amount of
silicone sealant to the entire Unload End
Butt Joint Gasket surface.
18. Connect all supply connections observing
National and local code requirements.
NOTE: Do not reinstall the access panels at
this time.
Leveling
For proper operation, the dishwasher must be
level. To level the dishwasher after assembly:
— 10 —
FLIGHT TYPE DISHWASHERS
Conveyor Belt Direction
1. Using a bubble level, check that the
dishwasher is level both front to back and
left to right.
2. Screw the feet in or out until the dishwasher
is level both front to back and left to right.
Conveyor Peg Belt Installation
NOTE: Whenever possible, two installers should
be used to install the Conveyor Peg Belt.
NOTE: The Conveyor Peg Belt weighs
between 300 lbs. (plastic) and 700 lbs.
(stainless steel). Exercise care while handling.
Gloves should be used while
handling the Conveyor Peg Belt to reduce the
possibility of personal injury.
To install the Conveyor Peg Belt, proceed
as follows:
4. Starting at the load end, thread a piece of
rope through the dishwasher, over the top
of the Lower Spray Manifolds and continue
to until you reach the Drive End shaft on
the unload end.
5. Thread the rope around the Drive End
shaft and back through the dishwasher.
This time thread the rope below the Lower
Spray Manifolds until the rope reaches the
load section. Exit the rope through the last
load inspection door.
6. Uncoil the Conveyor Peg Belt as much as
possible on the floor, on the load end of the
dishwasher. This makes it easier to feed
the belt into the dishwasher.
7. Lay the end of the Conveyor Peg Belt onto
the load section of the dishwasher with the
pegs on the belt tilting away from the
machine.
1. Loosen the two (2) Conveyor Motor Mount
bolts. This will allow the V-belts to be removed
from the pulleys and the Unload Drive
Sprockets will turn freely.
Pulley
Key
V-Belt
Pulley
Motor Mount
Plate
Conveyor Motor
Mount Bolts
Conveyor
Motor
Tension
Adjustment
Screw
Jam
Nut
Figure 9: Conveyor Motor V-Belt
T ension Adjustment
2. Open or remove all doors to gain access
to the dishwasher during Conveyor Peg
Belt installation.
Figure 10: Conveyor Belt Direction
8. Fasten the rope to the center of the first
lower belt connecting rod (Figure 11).
9. Station one person on the unload end of
the dishwasher and one at the load end.
The person at the load end will feed the
Conveyor Peg Belt into the dishwasher
while the person on the unload end pulls
the rope until the belt reaches the unload
Drive End Shaft.
3. Place the rolled up Conveyor Peg Belt at
the very end of the load end of the
dishwasher.
— 11 —
Loading...