Crown Steam ETP-5G User Manual

ETP-5G & ETP-10G

ECO-TECH® PLUS

GAS CONVECTION STEAMER

PARTS AND SERVICE MANUAL

EFFECTIVE JANUARY 10, 2018

The Company reserves the right to make substitution in the event that items specied are not available.

ERRORS: Descriptive and/or typographic errors are subject to correction.

Superseding All Previous Parts Lists.

MARKET FORGE

Telephone: [phone] Fax: [phone]

www.marketforge.com

P/N 14-0284 Rev G

TABLE OF CONTENTS

GENERAL TROUBLSHOOTING GUIDE .................................................3

ELECTRICAL FAULT ISOLATION GUIDE ................................................5

TROUBLESHOOTING ..................................................................6

ADJUSTMENTS .......................................................................7

WIRING DIAGRAMS ...................................................................8

ILLUSTRATED PARTS LIST

STEAMER EXPLODED VIEW ......................................................... 13

GAS COMPONENTS ................................................................. 17

CABINET ASSEMBLY ................................................................ 19

COMPONENT PANEL ................................................................ 22

JANUARY 10, 2018 2 ETP-5G & ETP-10G

GENERAL TROUBLSHOOTING GUIDE

PROBLEM PROBABLE CAUSE REMEDY

COOKING INDICATOR
LIGHT FAILS TO LIGHT
WITH TIMER SET

STEAM FAILS TO ENTER
COOKING COMPARTMENT
WITH COOKING INDICATOR
LIGHT ON

STEAM ENTERS COMPART­MENT CONTINUOUSLY
WITHOUT THE COOKING
OR READY LIGHT ON

a. Main power circuit breaker

tripped.

b. Door interlock switch contacts not

closed.

c. Door interlock switch faulty.

d. Indicator light burned out.

e. Faulty timer contacts.

f. Faulty wiring.

a. Faulty wiring. a. Inspect condition of wire and

a. Standby thermostat not set cor-

rectly.

b. Faulty thermostatic switch.

c. HOLD set on timer.

a. Locate external circuit breaker for

incoming power and place in ON
position.

b. Shut cooker door to close switch

contacts. Check alignment of door
with switch.

c. Replace switch.

d. Replace light.

e. Replace timer.

f. Inspect condition of wire and

tightness of all connections. Correct
as needed.

tightness of all connections. Correct
as needed.

a. Adjust the thermostat lower.

b. Replace thermostat.

c. Rotate timer knob to ‘OFF’ position.

TIMER DIAL NOT TURNING a. Faulty timer motor.

b. Faulty wiring.

BUZZER FAILS TO SOUND
AT END OF TIMER SETTING

STEAM FLOWS CONTINU­OUSLY FROM DRAIN LINE
WITH COOKER IN OPERA­TION

a. Timer contacts faulty.

b. Buzzer faulty.

c. Faulty wiring.

a. Cold water not connected.

b. Faulty cooling valve.

c. Faulty wiring.

a. Replace timer.

b. Inspect condition of wire and light-

ness of all connections. Correct as
needed.

a. Replace timer.

b. Replace buzzer.

c. Inspect condition of wire and tight-

ness of all connections. Correct as
needed.

a. Turn on external shutoff valve.

b. Replace cooling valve.

c. Inspect condition of wire and

tightness of all connections. Correct
as needed.

JANUARY 10, 2018 3 ETP-5G & ETP-10G

GENERAL TROUBLSHOOTING GUIDE

PROBLEM PROBABLE CAUSE REMEDY

DOOR LEAKS. a. Damaged door gasket.

b. Clogged compartment drain.

WATER FLOWS INTO
COOKING COMPARTMENT.

NOTE: THESE PROBLEMS ARE AN INDICATION OF SEVERE WATER CONDITIONS WHICH SHOULD BE COR-

RECTED IMMEDIATELY TO AVOID DAMAGE TO THE COMPONENTS AND PERFORMANCE OF THE
STEAMER. CALL YOUR SERVICE AGENCY FOR ASSISTANCE.

WATER ACCUMULATES IN
COMPARTMENT.

WATER FLOWS INTO DRAIN
DURING SHUTDOWN.

WATER NOT BEING SUP­PLIED TO GENERATOR.

a. Level control has failed.

b. Water has very high resistance

c. Scale build-up on probe.

d. Water ll solenoid valve.

a. Plugged compartment drain a. Remove screen and clean drain

a. Cooling valve does not close. a. Check valve for foreign material or

a. Water supply off.

b. Supply water pressure too low.

a. Check gasket for cuts and replace.

b. Remove screen and clean drain line

or plumbing.

a. Replace.

b. Replace level control with high sen-

sitivity control.

c. Clean all probes

d. Plugged, defective, clean or re-

place.

line.

damage.

a. Check incoming water valve is on.

b. Call supply agency.

c. Defective water solenoid valve.

d. Level Probe shorted.

e. Defective water level control.

f. Drain valve is open.

c. Replace or clean.

d. Check and correct.

e. Replace.

f. Check valve, clean or replace.

JANUARY 10, 2018 4 ETP-5G & ETP-10G

ELECTRICAL FAULT ISOLATION GUIDE

FAILURE FAULT LOCATION

1. WILL NOT OPERATE IN EITHER HOLD OR 60-MINUTE TIMER POSI­TIONS.

2. OPERATING IN HOLD POSITION BUT NOT IN 60-MINUTE TIMER
POSITION.

3. OPERATES IN 60-MINUTE TIMER POSITION BUT NOT IN HOLD PO­SITION.

4. WITH COOK INDICATOR LIGHT ON AND STEAM ENTERING THE
CAVITY, TIMER DIAL FAILS TO TURN.

5. BUZZER FAILS TO SOUND AT END OF 60-MINUTE TIMER MODE. a. 60-Minute timer contacts

a. Incoming power

b. Timer

c. Door interlock switch

d. Wiring

a. 60-Minute timer

b. Wiring

a. Timer

b. Wiring

c. Hold thermostat

a. Hold position set on timer.

b. Timer motor

c. Wiring

b. Buzzer

c. Wiring

6. STEAM FLOWS CONTINUOUSLY FROM BOILER DRAIN LINE. a. Cooling valve needs replacing

b. Wiring

JANUARY 10, 2018 5 ETP-5G & ETP-10G

TROUBLESHOOTING

60 MINUTE TIMER

Timer Contacts

Defective timer contacts will result in failure of cooker
compartment to operate.

When this occurs, remove the side panel and proceed as
follows:

1. Turn off power to the cooker at external circuit breaker

2. Disconnect all ve wires from timer terminals.

3. Connect an ohmmeter between terminals 1 and 3.

4. Rotate timer dial beyond the “0 - Minute” point (any
setting) to obtain a reading of zero ohms on the ohm­meter. If zero ohm reading cannot be obtained, timer
contacts are defective and the timer must be replaced.

5. Move ohmmeter leads to terminals 1 and 4.

6. Rotate timer dial to “0 - Minute” position (an audible
click indicates correct position). If zero ohm reading
cannot be obtained, the timer is defective and must
be replaced.

7. Remove ohmmeter and replace all ve leads on timer
terminals.

Timer Motor

A defective timer motor will cause continuous operation in
the TIME mode, with the timer dial failing to return to the
“0 - Minute” position.

To conrm timer motor condition, proceed as follows:

1. Carefully check motor wire leads and tighten loose
connections

WARNING

Use care while working with control panel.
Terminals carry 120 Volts.

2. Turn on power to the steamer.

3. Set timer dial (any setting beyond “0 - Minute”). If op­eration is correct, the motor will turn the dial toward
“0 - Minute”. If the motor fails to operate, it is defective
and the entire timer must be replaced.

DOOR INTERLOCK SWITCH

Malfunction of the cooker door interlock switch prevents
indicator lights from turning on and steam generator from
operating when the timer dial is set. If steam does not
enter the compartment and the cooking indicator light fails
to turn on with the door latch securely engaged, the fault
may be in the door interlock switch. Proceed as follows:

1. Turn off power to the cooker.

2. Disconnect wires to the door switch terminals.

3. Connect an ohmmeter between the Common & N.O.
(Normally Open) terminals of the switch.

4. Actuate the switch by closing the cooking compart­ment door. If a zero reading cannot be obtained, the
switch is defective and must be replaced.

5. Remove the ohmmeter and replace the leads on
switch terminals.

INDICATOR LIGHTS

If the cooker compartment functions correctly, with the
single exception that the indicator light fails to light during
operation, the fault is a defective indicator light. A “burned

out” or defective light is veried by using an AC volt-meter

at the leads, with input power on the selector switch in the
correct position for that timer, the timer set, and the door
latches closed. If 120 volts is present, the fault is in the in­dicator light and requires replacement. If 120 volts is not
present, the fault is in the wiring or control components
(selector switch, timer or door switch).

BUZZER

If the buzzer does not sound at the termination of the
operator-selected timer setting (timer dial returned to “0

- Minute” position), the fault may be a defective buzzer.

Buzzer operation is veried using an AC volt-meter at

buzzer coil connections with input power on and selec­tor switch and coinciding timer dial set at the “0 - Minute”
position. If voltage is 120 volts, the fault is in the buzzer,
which must be replaced. If 120 volts is not present, the
fault is in the wiring or control components (timer or selec­tor switch).

4. Shut off power to the cooker.

JANUARY 10, 2018 6 ETP-5G & ETP-10G

WIRING

Using an ohmmeter, wiring continuity between the con-

nections shown on the wiring diagram is readily veried.

This is best done in stages, removing only those wires
required for each continuity check. As each lead is re­placed, it should be checked for evidence of corrosion,
and cleaned if necessary. All leads must be tightly at­tached so as to provide a good electrical connection.

ADJUSTMENTS

All units are adjusted at the factory. In case of operation problems at initial installation, check type of gas supply and mani­fold pressure and compare it with information on the rating plate.

PROBLEM PROBABLE CAUSE REMEDY

BURNERS DO NOT
COME ON

BURNERS PRO­DUCE CARBON
DEPOSITS

FLASH BACK a. Burning inside mixer tube.

WARNING

At least twice a year, have an authorized
service person clean and adjust the unit for
maximum performance.

WARNING

Adjustments and service work may be per-

formed only by a qualied technician who is

experienced in, and knowledgeable with the
operation of Commercial Gas Cooking Equip-

ment. However, to assure your condence,

contact your authorized service agency for
reliable service, dependable advice or other
assistance and for genuine factory parts.

a. Gas supply is off.

b. Power switch is off.

c. Probe not sensing water level.

d. Ignitor not functioning.

e. Combination gas valve not opening.

a. Incorrect orice size.

b. Incorrect gas supply.

c. Incorrect gas pressure.

b. Incomplete combustion.

c. Sooting of burner.

d. Mislocated ignitor.

a. Locate supply line and turn on.

b. Locate switch on control panel and turn on.

c. Clean probes, check wiring.

d. Check ignition module, relay.

e. Check that control knob is in the ON posi-

tion, check that 24 volts is at the gas valve.

a. Check size and correct.

b. Check size and correct.

c. Check gas pressure at manifold. Correct if

necessary.

a. Reduce primary air.

b. Increase burner input.

c. Increase primary air.

d. Adjust ignitor.

door panel assembly.

4. Remove the gasket plate and the door gasket from
door panel.

5. Install the new door gasket to the door panel. Re­place the gasket plate and six screws.

6. Reassemble the door panel assembly in the door
frame using the four screws.

7. Gasket replacement is now complete.

Door may be difcult to close until gasket has compressed

to conform to opening. Leaving door closed overnight will
compress gasket.

EXTERIOR PANEL REMOVAL

CAUTION

Shut off main electrical power to unit.

DOOR GASKET REPLACEMENT

The cooking compartment door gaskets are made of a
silicone-type rubber material that is very durable but sub­ject to wear during normal operation. Should the gasket
leak replace it.

1. Open the cooking compartment door.

2. Remove the four screws on the outside of the door
frame, and remove the door panel assembly.

3. Remove the six screws from the gasket plate in the

JANUARY 10, 2018 7 ETP-5G & ETP-10G

WARNING

To prevent hazard in servicing the cooker, be
certain that the steam supply boiler is shut
down, the cold water shut-off valve is closed,
and the electrical disconnect circuit breaker
for the Cooker/Boiler unit is OFF before re­moving side panels.

Access to all internal plumbing and electrical assemblies
is from the right side. The right-side panel is removed by
removing the bottom screws from panel. Gas controls are
located in the lower cabinet and are accessible from the
front of the unit.