Groen HY-5GF Service Manual
HYPERSTEAM MODEL HY-5G/(2)HY-5G
Table of Contents
SECTION 5B: HYPERSTEAM MODEL HY-5G
(GAS FIRED STEAM GENERATOR)
PAGE
5B.1 SPECIFICATIONS............................................................5B-1
5B.1.1 Model Designation ............................................................5B-1
5B.1.2 Construction......................................................................5B-1
5B.1.3 Operation ..........................................................................5B-1
5B.1.4 Electrical Requirements....................................................5B-1
5B.1.5 Water Supply Requirements ............................................5B-2
5B.1.6 Gas Supply ......................................................................5B-2
5B.1.7 Gas Jet Orifice Size..........................................................5B-2
5B.1.8 Gas Jet Orifice Size Charts ..............................................5B-3
5B.2 ELECTRICAL DIAGRAMS ............................................ 5B-5
5B.2.1 Electrical Schematic Diagram - HY-5G ............................5B-5
.2.2 Interconnect Block Wiring Diagram - HY-5G ....................5B-7
5B
5B.3 DIAGNOSTICS .............................................................. 5B-9
5B.4 ASSEMBLY/DISASSEMBLY PROCEDURES................ 5B-9
5B.4.1 Side Panels ......................................................................5B-9
5B.4.2 Top Cover..........................................................................5B-9
5B.4.3 Adjustable Legs
5B.4.4 Pilot Switch (SW3)..........................................................5B-10
5B.4.5 Main Gas Valve (GV2) and Gas
Pressure Adjustment
.4.6 Igniter Module ................................................................5B-11
5B
.4.7
5B
5B.4.8 Steam Generator Manifold Assembly ............................5B-12
.4.9 Gas Solenoid Valve ........................................................5B-13
5B
5B.4.10 Gas Generator Drain Valve ............................................5B-14
5B.4.11 Water Flow Reducer ......................................................5B-14
5B.4.12 Water Inlet Valve ............................................................5B-14
5B.4.13 Water Inlet Valve Coil......................................................5B-15
.4.14 Steam Generator ............................................................5B-15
5B
5B.4.15 High Limit Thermostat ..................................................5B-17
5B.4.16 Steam Generator Probes (High and Low Water)............5B-17
.4.17
5B
5B.4.18 Control Voltage Transformer ..........................................5B-18
5B.4.19 Timer Assembly ..............................................................5B-18
5B.4.20 Light and Timer PC Board ............................................5B-18
Pilot Bur
Current Check/Adjustment..............................................5B-12
Supply
ner Replacement/
oltage
V
................................................................5B-9
............................................................
erminal Block........................................5B-17
T
5B-10
(2/02)
5B-
i
HYPERSTEAM MODEL HY-5G/(2)HY-5G
Table of Contents
5B.4.21 Steamer Control PC Board ............................................5B-18
5B.4.22 Fan..................................................................................5B-19
5B.4.23 Fan Motor Assembly ......................................................5B-19
5B.4.24 Motor Starting Capacitor ................................................5B-19
5B.4.25 Steam Generator Ready Thermostat..............................5B-19
5B.4.26 Steam Port, Front ..........................................................5B-19
5B.4.27 Cavity Hose Assemblies ................................................5B-20
5B.4.28 Door Removal/Installation/Alignment..............................5B-20
5B.4.29 Door Switch ....................................................................5B-20
5B.4.30 Door Reversing Procedures ..........................................5B-20
5B.4.31 Door Gasket....................................................................5B-20
5B.4.32 Door Components: Handle, Cam, Spacer, etc. ..............5B-20
5B.4.33 Door Spring ....................................................................5B-21
5B.4.34 Door Latch Pin................................................................5B-21
5B.4.35 Wiring Harnesses ..........................................................5B-21
5B.4.36 Cleaning System Eductor ..............................................5B-22
PAGE
5B.5 PARTS IDENTIFICATION HY-12G/24E ........................5B-23
nal Cabinet and Sheet Metal..................................5B-23
5B.5.1
5B.5.2 Electrical Circuit; Steam Hoses; Drain Valve...................5B-27
5B.5.3 Line Connection Assembly; Electronic
.5.4 Plumbing Components on Steamer Base.......................5B-31
5B
5B.5.5 Water Hose Connections ................................................5B-33
5B.5.6
5B.5.7 Gas Piping and Steam Generator...................................5B-36
5B.5.8 Gas Valve Piping Assembly ............................................5B-37
.5.9
5B
.5.10
5B
Exter
............................................................5B-29
Control Assemb
Parts Inside Steamer Cavity ...........................................5B-35
old Assembly ..........................................................5B-38
Manif
Water Inlet Valves ...........................................................5B-39
ly
5B-ii
(2/02)
HY-5GF (“Single Stack”)
37
40
37
39
34
33
34
38
5 PLCS
39137A
1
HYPERSTEAM MODEL HY-5G/(2)HY-5G
Specifications
5B.1 SPECIFICATIONS
5B.1.1 Model Designation
HY - HyPerSteam
5 - Maximum Capacity of 2-1/2" Deep Pans
G - Gas Fired Steam Generator
F - Stand Mounted
HY - 5 GF
(2)HY - 24 GF
NOTE: Since the double-stacking arrangement involves an inter-
linked deliming system, there is no field retrofit kit available.
5B.1.2 Construction
Dimensions HY-5GF: 28-3/8'' high x 21-5/8'' wide x
-5GF: 71-3/8'' high x 21-5/8'' wide x
(2)HY
Two (2) HY-5 G’s stacked
33-5/16'' deep
35-3/16'' deep
Weight: HY-5GF: 203 pounds; (2)HY-5GF: 460 pounds
Cladding Material: Stainless Steel No
. 4 Finish
5B.1.3 Operation
Steam Generator: Atmospheric Steam at 212 degrees F.
60 min
ute timer with buzz
er and LED indicators
.
MAXIMUM PAN CAPACITY
HY-5G (2)HY-5G
an Size/T
P
12 x 20 x 1 5 12 x 20 x 1 10
(steamer) (steamer)
12 x 20 x 2-1/2
(steamer)
12 x 20 x 4 3 12 x 20 x 4 6
(steamer) (steamer)
5B.1.4
ype Number Pan Size/Type Number
5
12 x 20 x 2-1/2
(steamer)
Electrical Requirements
120 Volts AC, single phase, 60 Hz., 15 ampere service.
10
(2/02)
-5GF
(2)HY
(two HY-5G unit factory
ked)
le-stac
doub
138489A
5B-1
HYPERSTEAM MODEL HY-5G/(2)HY-5G
Specifications
5B.1.5 Water Supply Requirements
3/4 inch N.H. cold water supply hose connection to be used.
Supply shall be not less than 1.50 GPM.
Pressure: 30 psi min. - 60 psi max.
Water Quality (minimum): Total dissolved solids (TDS) contents
should have a minimum value of 30-40 parts/million and the
water pH should be 7.0 to 9.0.
5B.1.6 Gas Supply
Gas services shall be natural or propane by means of 3/4 inch
N.P.T. pipe.
Each steam generator: 62,000 BTU/hour.
Gas Operating Pressure:
3.2'' W.C. - Natural Gas
10.5'' W.C. - Propane Gas
Recommended Incoming Gas Feed Rate:
5'' W.C
12
. min. - 14'' W.C. max. - Natural Gas
. min. - 14
'' W.C
. max. - Propane Gas
'' W.C
5B.1.7
IMPORTANT: The gas jet orifice size and the flame holder for
each jet on the assembly manifold MUST be properly sized for
the type of gas being used (Natur
tude (f
Improper gas jet sizes will result in either too much gas being
used or not enough gas to achieve proper heating of the steam
gener
Please refer to the chart providing the proper gas jet orifice sizes
(Groen P
plies and for various elevations from sea level to 12,000 feet.
If there is a question as to what size is installed, the column
labeled “DRILL SIZE” indicates the diameter or number of the
ill bit which will fit the gas jet or
dr
Gas Jet Orifice Size
eet above sea le
.
ator
t Numbers) f
ar
al or Propane) and for the alti-
vel) at which the steamer is to be used.
or both Natur
al and Propane gas sup-
.
ifice
5B-2
(2/02)
5B.1.8 Gas Jet Orifice Size Charts
BURNER JET SIZING CHART
GROEN PART
NUMBER
SIZE OF ORIFICE
DIM "A"
TYPE OF GAS
ALTITUDE
#57 (.043)
099926
BLANK
106523
NAT. 0'-2000'
NAT. 2001'-4000'
099928
#1.45 mm (.0571)
NAT. 4001'-6000'
099929
#54 (.055)
LP. 0'-2000'
LP. 2001'-4000'
138474
#72 (.025)
LP. 4001'-6000'
099935
.85 mm (.0335)
099936
#67 (.0320)
LOW FIRE HIGH FIRE
#1.05 mm (.0413)
#60 (.040)
.90 mm (.0354)
.60 mm (.0236)
099934
139321
106526
139127
SIZE OF ORIFICE
BLANK
#53 (.0595)
DIM "A"
GROEN PART
NUMBER
099927
099926
#73 (.0240)
139128
(2 PER MANIFOLD) (6 PER MANIFOLD)
HYPERSTEAM MODEL HY-5G/(2)HY-5G
Specifications
(2/02)
5B-3
HYPERSTEAM MODEL HY-5G
TRANSFORMER
STEAMER CONTROL BOARD
132
J1
T2
321J44
J5A1
J5
LIGHT AND TIMER BOARD
J5B1
J9
J8
TIMER
2
1
9
63457
8
1310111214
2
1
9
6
3
4
5
7
8
10
3127546108
9
3
4
2
1
6
7
3
4
5
2
1
K1
24(DONE)
21
22(TIMING)
11
12(MANUAL)
BLUE
RED
RED
BLUE
TERMINAL
AUTO TEST
SW2
STEAMER SELECT
S1
ON
SWITCH
STEAMER SELECT TABLE
1 2
0 1
LOW PROBE
HIGH PROBE
+12VDC
24VAC
HIGH POWER 1
DRAIN
EDUCTOR
HIGH POWER 2
LOW POWER
FILL
FAN SPRAY
LEFT
TSTAT
READY
WHITE
BLACK
BLUE
RED
21
DOOR SWITCH
20VAC CT
21
RIGHT
K3
BLUE
WHITE
(PV)TH
(PV)TR
GND(4)
PV(3)
MVPV(2)
MV(1)
IGNITER
ORANGE
B A
GREEN/YELLOW
SWITCH
PILOT
SW3
BLACK
GV1
PC1
BLOCK TB1
24VAC
2
K1
CIRCUIT
4
AMP
BLACK
120V
COM24VAC LO
CUTOUT
BREAKER
4
T1
24VAC HI
TRANSFORMER
24VAC 75VA
ACHI
GREEN/
YELLOW
BROWN
BLACK
ACLO
CIRCUIT
10 AMP
BREAKER
WHITE
2 1
CB-1
1
2
BLACK
1 2
WV1
WV2
BROWN
RED/BLK
BLK/RED
(MV)TH
(MV)TR
0 1
G
C D
SW3
24V(6)
24V(5)
BLACK
GV2
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
+5VDC
WV5
WV6
WV3
WV4
DV
K4
24VDC
K4
RED
DRAIN
START CAP
WHITE
BROWN
YELLOW
VIOLET
ORANGE
BLACK
MAIN
START
BLUE
RED
BROWN
RED
120=6uf
RED
WHITE
YELLOW
BLUE
VIOLET
BROWN
BROWN
RED
RED
ORANGE
KEY
BLACK
M1
MOTOR
3600 RPM
C1
JUMPER
P/N 123123
120
1
0
HY-5G ON ON
1
15
OVRTMP S'DOWN CNTRL
FILL VALVE
EDUCTOR VALVE
LOW POWER RELAY
543
HIGH POWER RELAY
16
OVERTEMP SENSE IN
24 VAC SWITCHED
DRAIN (DC+)
+12VDC-OUT
24VAC UNSWITCHED (DRAIN)
24 VAC LOW
24VAC SWITCHED
GRN/YEL
BROWN
ORANGE
BLACK
RED
RED/WHT
WHT/RED
BLK/ORNG
BLU/WHT
RED/BLU
BLK/RED
RED/BLK
WHITE
DRAIN (DC-)
1413121110
9
6
17
18
LO PROBE
HI PROBE
BLK/BLU
WHT/BLU
C
NC
HL1
8
BLK/GRN
24VAC SWITCHED
6
ACHI
ACLO
5
10
8
1
GREEN/YELLOW
WHITE/ORANGE
WHITE/ORANGE
2
4
2
2
1
J6
1
J2
WHITE
BLACK
BLACK/BLUE
WHITE/BLUE
J7
123456789
10111213141516
GRN/YEL
BROWN
ORANGE
BLACK
RED
RED/WHT
WHT/RED
BLK/ORNG
BLK/GRN
BLUE
RED/BLU
BLK/RED
RED/BLK
WHITE
BLU/WHT
RED/YEL
ACHI
ACLO
P7
CONDENSATE SPRAY VALVEBLU7
PILOT
K3
CUTOUT
4 2
8 6
8 6
4 2
WHITE
130396
Electrical Diagrams
5A.2 ELECTRICAL DIAGRAMS
5A.2.1 Electrical Schematic Diagram - HY-5G
5B-4
(2/02)
HYPERSTEAM MODEL HY-5G
Timer
ON
J7
P7A
RED
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
WHITE
RED/BLU
BLK/RED
BLUE
RED/BLK
WV5
WV2BLACK
BLUE
B
LACK
WHITE
BROWN
GRN/YEL
RED
RED
BLACK
ORANGE
BLACK
BLACK
BLACK
RED
GREEN
WHITE
WHITE
RED
MOTOR CAP
FAN MOTOR
MOTOR ASSY.
P/N 096740
P/N 096857
P
/N 119815
P/N 070178
P/N 070178
P/N 088865
P/N 096857
1
1
1
1
1
1
1
1
1
1
T2-8
T2-10
T2-6
T2
WHITE
BLACK
T2-5
T2-1
20VAC CT
GRN/YEL
WHT/ORN
WHT/ORN
RED
BLUE
BLUE
BLUE
BLUE
BLUE
B
LUE
WHITE
BLACK
BLACK
WHITE
GRN/YEL
WHT/ORN
WHT/ORN
LO PROBE
HI PROBEBLK/BLU
WHT/BLU
BLACK
WV6
BLACK
RED/BLU
WV2
WV1
WHITE
RED
BLACK
RED
GREEN
BLACK
BLACK
WHITE
RED
RED
BLACK
ORANGE
BROWN
GRN/YEL
21
D
IAGNOSTIC
SELECT
STEAMER
SELECT
TMRMOT 2
T
MRMOT 1
24
21
22
11
12
READY B
READY A
DRSW R2
DRSW R1
DRSW L2
DRSW L1
RED
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
BLUE
RED
B
LUE
BLUE
BLUE
BLUE
BLUE
BLUE
RED
P/N 119871
P/N 119868
P/N 123120
J1
TSTAT
DOOR RIGHT
DOOR LEFT
+12VDC
LOW PROBE
HIGH PROBE
J7
J2
J
6
J4
J5
J9
J8
J5A1
J5B1
LOW PROBE
HIGH PROBE
EDUCTOR VALVE
FILL VALVE
137221 STEAMER CONTROL
BOARD
1
19817 LIGHT AND
TIMER BOARD
+5VDC
FAN / SPRAY
FILL
LOW POWER
HIGH POIWER 2
EDUCTOR
DRAIN
HIGH POWER 1
24VAC
P/N 125788
R
ED
P
/N 123123
P/N 090827
P/N 090827
P/N 123122
P/N 096826
P/N 096812
HY5G INTERCONNECT DOMESTIC
24-SEPT-2001
P/N 106233
P/N 119813
P/N 096892
BLACK
BLACK
WHITE
WHITE
BLACK
T1-COM
T1-120
T1-120
T1-COM
BROWN
BROWN
BLK/ORN
BLK/ORN
RED
K1-4
K1-4
K1-2
K1-2
K1-1
K1-1
K1-0
ORANGE
BLK/ORN HL1-NC
HL1-C
T1-24LO GRN/YEL
T1-24HI
BLACK
GRN/YEL
BLACK
T1-24LO
T1-24HI
T
B1
HL1
24VAC CUTOUT
K1
T1
24VAC
HIGH LIMIT
L2
L
1
B
LACK
WHITETB1-1
TB1-2
P/N 003887
P/N
CB1-2
CB1-1
PILOT CUTOUT
P/N 119814
K3
E-GND
GRN/YEL
BLACK
BLACK
P/N 106627
BROWN
WHITE
GV1-2
GV1-1
HIGH POWER #1
GV1
G
RN/YEL
GRN/YEL
GRN/YEL
GRN/YEL
P/N 085153
P/N 096705
IGNITION PLUG
IGNITION MODULE
WHITE
IGN-9
IGN-6
IGN-5
IGN-5
I
GN-4
IGN-4
ORANGE
ORANGE
IGN-3
IGN-2
IGN-1
IGN
BLUE
BLUE
BLACK
SW3-D
P/N 087951
BLUE
ORANGE
BLUE
BLACK
SW3-B
SW3-C
SW3-C
SW3-A
PV-TH
MV-TR
MV-TH
WHITE
BLK/RED
SW3
PILOT SWITCH
MAIN VALVE(NAT)
GV2
PV-TR
BLUE
BLUE PV-TR
RED/BLK
K
3-0
K3-1
K3-1
BLACK
BLACK
B
LUE
K3-0 BLUE
BLACK
BLACK K3-8
K3-8
WHITE
WHITE K3-4
K3-4
BLACK K3-6
WHITE K3-2
P/N 098443
DRAIN VALVE
P/N 074594
WHITE
RED
DV1-1
DV1-2
K4-2
K4-6
BLK/ORN
GRN/YEL
BLACK
BLACK
GRN/YEL
K4-1
K4-4
K4-8
K4-8
K4-4
DRAIN RELAY
P/N138420
K4
WHT/RED K4-0
T2-2 WHITE
T2-4 BLACK
WV3
WV4
BLUE
BLK/GRN
P/N 090827
SPRAY VALVE
P/N 130399
P/N 130397
P/N 130398
11
BLU/WHT
BLK/GRN
BLK/ORN
WHT/RED
RED/WHT
RED
BLACK
ORANGE
BROWN
GRN/YEL
BLK/BLU
W
HT/BLU
RED
BLUE
BLUE
RED
BLACK
*KEY*
ORANGE
RED
BROWN
RED
VIOLET
BROWN
WHITE
YELLOW
BLUE
WHITE
YELLOW
BLUE
VIOLET
BROWN
BROWN
RED
RED
ORANGE
BLACK
Electrical Diagrams
5A.2.1 Interconnect Block Diagram - HY-5G
(2/02)
5B-5
HYPERSTEAM MODEL HY-5G/(2)HY-5G
Diagnostics
5B.3 DIAGNOSTICS
Diagnostic procedures are the same for all Steamer Ovens. Refer
to Section 4.2.
5B.4 ASSEMBLY/DISASSEMBLY PROCEDURES
GENERAL INFORMATION:
The following procedures are based upon having access to the
steamer on all four sides. If the steamer is installed between other
appliances and there is not adequate room on the sides for access,
the steamer must be pulled out from its position to gain proper
access.
Care should be exercised in moving the steamer so as not to stress
or pull on electrical, w
ater or gas connections.
5B.4.1 Side Panels
Right Side (Louv
Left Side (Smooth):
Please refer to Section 4.3, Paragraph 4.3.1 for Assembly/
Disassembly procedures.
5B.4.2 Top Cover
Single (or Double Stack Upper): P/N 138536
Bracket, Top Retainer
P/N 123156 (qty 2)
Please refer to Section 4.3, Paragraph 4.3.2 for Assembly/
Disassembly procedures.
Double Stack (2)HY
1.
Disconnect power to the steamers.
2. Remove right and left side covers.
3. On bac
4. In upper unit, disconnect clean hose that comes through
5. Remo
6. Remo
7. Remove lower unit top panel.
k of units, remove vent tube and drain box.
bushing. Remove clamp from hose.
ve four bolts and flat washers.
e top unit.
v
-5G Lower Unit T
ered): P/N 138532
P/N 138534
op Panel Removal
(2/02)
5B.4.3 Adjustable Legs
P/N 042505
Please refer to Section 4.3, Paragraph 4.3.4 for Assembly/
Disassembly procedures.
5B-7
HYPERSTEAM MODEL HY-5G/(2)HY-5G
Assembly/Disassembly Procedures
5B.4.4 Pilot Switch (SW3)
P/N 087951
Please refer to Section 4.3, Paragraph 4.3.5 for Assembly/
Disassembly procedures.
5B.4.5 Main Gas Valve (GV2) and
Gas Pressure Adjustment
Natural: P/N 098443
Propane:
1. Turn off gas and electric power to steamer.
2. Remove the right side panel.
3. Turn the manual gas shut-off valve to the OFF position.
P/N 098444
4. Note the positions of wires connected to terminals of the
o gas solenoid valves, then disconnect the wires.
tw
5. Disconnect the four wires from the main gas valve.
They are:
blue:
white: Terminal (PV) TH
black: Terminal (MV) TR
red:
6. Using open-ended wrenches to loosen the compression
nuts, remove the five sections of aluminum tubing between
the valve and piping assembly and the steam generator
manifold assembly. Be careful not to excessively move or
bend the aluminum tubing.
7. With a pipe wrench or ChannelLock, open the pipe union
between the main gas valve and the manual gas shut-off
valve. Remove the assembly.
8. With the main gas valve held in a vise, ChannelLock or pipe
wrench, use a ChannelLoc
both sides of the main gas v
Terminal (PV) TR
Terminal (MV) TH
k to remo
.
e
alv
e the nipples from
v
5B-8
To Install:
9.
Remo
old valve and install on the side of the new valve, using pipe
thread compound.
e the elbo
v
w compression fitting from the side of the
(2/02)
Figure 1.
Gas Pressure Regulator
Adjustment Screw
HYPERSTEAM MODEL HY-5G/(2)HY-5G
Assembly/Disassembly Procedures
10. Screw in and tighten the nipples into both sides of the main
gas valve using pipe thread compound.
IMPORTANT: The elbow and elbow installed on the end of the
valve near the adjustment screw must be positioned at 10 degrees
away from vertical, for correct installation of the assembly back into
the steamer.
11. Using a pipe wrench or ChannelLock, reconnect to the
union near the manual gas shut-off valve and tighten.
DSC00003
12. Attach all aluminum tubing and tighten compression nuts
with an open-ended wrench.
13. Plug in the four terminal wires to the main gas valve, per
step 5 on page 5B-10.
14. Plug in wires at the terminals of the gas solenoid valves.
Figure 2.
Gas Pressure Tap
with Plug
138585A
Gas Pressur
e Adjustment:
Adjust the gas pressure after installing the main gas valve.
1. Remove the gas pressure tap plug (Figure 2) on gas man-
old.
if
2. Connect manometer to gas pressure tap.
3. Remo
ve cap from gas pressure regulator adjustment screw
on the main gas valve (Figure 1). Adjust the gas pressure
regulator screw until the manometer reads 3.2" W.C. for
natural gas or 10.5" W.C. for propane gas. Turn the adjustment screw in to increase pressure and out to decrease
pressure
4. Install cap on pressure regulator scre
manometer and install manif
.
w. Disconnect
old plug.
5B.4.6 Igniter Module
P/N 085153
Please ref
er to Section 4.3, P
aph 4.3.7 f
r
ag
ar
or Assemb
ly/
Disassembly procedures.
(2/02)
5B-9
HYPERSTEAM MODEL HY-5G/(2)HY-5G
Assembly/Disassembly Procedures
5B.4.7 Pilot Burner Replacement/
Current Check/Adjustment
Natural Gas: P/N 098641
Propane: P/N 098642
Please refer to Section 4.3, Paragraph 4.3.8 for Assembly/
Disassembly procedures.
5B.4.8 Steam Generator Manifold Assembly
Weldment Only: P/N 138523
Complete Assembly: See Page 5B-3/5B-4
and 5B-38
NOTE: The complete manif
weldment with the following parts installed. Burner jets for the
chosen gas type and altitude; flame holders, and pilot burner, for
the chosen gas type.
1. Turn off gas and electric power to the steamer.
2. Remove the right side panel.
3. Turn the manual gas shut-off valve to the OFF position.
4. Disconnect the igniter cable from the pilot burner. It is a fric-
tion fitting similar to a spark plug wire.
5. Using open-ended wrenches, remove the five sections of
aluminum tubing between the valve and piping assembly
and the gas gener
6. Remove the two screws securing the pilot burner’s mount-
acket to the manifold, and remove the pilot burner.
ing br
7. Use a nut driver or socket wrench to remove four bolts
which hold the manifold assembly to the steam generator.
old assembly consists of the manifold
ator manif
old assemb
ly.
5B-10
8. The manifold assembly may be removed for inspection,
component replacement or assembly replacement.
o Install:
T
9.
If a ne
the tw
to the manif
w manifold assembly is being installed, first remove
ner’s mounting bracket
ws secur
o scre
old, and remo
ing the pilot b
e the pilot b
v
ur
ur
ner
.
(2/02)
HYPERSTEAM MODEL HY-5G/(2)HY-5G
Table of Contents
10. Carefully fit the manifold assembly in place on the steam
generator, so that the flame holders are not damaged by
striking the radiation shield. Install and tighten four bolts to
secure the manifold in place.
11. Fit the pilot burner in position under the bottom of the man-
ifold and install two screws to hold its mounting bracket in
place.
12. Reconnect five sections of aluminum tubing between the
valve and piping assembly and the manifold assembly. Use
open-ended wrenches to tighten the compression nuts.
13. Connect the igniter cable to the pilot burner.
5B.4.9 Gas Solenoid Valve
P/N 099906
Main Gas Valve
DSC00006
1. Turn off gas and electric power to the steamer.
2. Remove the right side panel.
3. Turn the manual gas shut-off valve to the OFF position.
4. Note the positions of wires connected to ter
minals of the
two gas solenoid valves, then disconnect the wires.
e.
5. Disconnect the f
our wires from the main gas v
alv
They are:
blue: Terminal (PV) TR
white:
Terminal (PV) TH
black: Terminal (MV) TR
red: Terminal (MV) TH
6. Using open-ended wrenches to loosen the compression
nuts, remove the five sections of aluminum tubing between
the valve and piping assembly and the steam generator
manifold assembly. Be careful not to excessively move or
bend the aluminum tubing.
7. With a pipe wrench or ChannelLoc
k, open the pipe union
between the main gas valve and the manual gas shut-off
. Remove the assembly.
e
alv
v
(2/02)
8. With the tee or elbow near the solenoid valve being
replaced held in a vise
ChannelLoc
k to disconnect the v
, ChannelLoc
k or pipe wrench, use a
e from the nipple
alv
.
5B-11
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