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P ar ts and C o m p o n e n t s
PARTS
AND
34988 Service Manual
COMPONENTS
Parts and Components .........................................................................................91
How to Use the Parts and Components Illustrated Parts Listing .....................91
External Assembly ................................................................................................93
Internal Assembly .................................................................................................95
Head Assembly ......................................................................................................100
ISV Assembly (Domestic) .....................................................................................102
ISV Assembly (Int’l) ...............................................................................................103
Manifold Assembly ................................................................................................105
Load Cell Assembly ..............................................................................................110
Dye Bottle Bracket Assembly...............................................................................111
Vacuum Pump Assembly ......................................................................................112
Compressor Assembly .........................................................................................113
Base Assembly ......................................................................................................115
Wiring Harness Diagram .......................................................................................116
Plumbing Diagram .................................................................................................118
Main Component Descriptions ............................................................................120
Alphabetical Parts List ..........................................................................................122
PANZITTA SALES & SERVICE
72 George Avenue
Wilkes-Barre, PA 18705
570-822-6720 800-822-6720
www.panzittasales.com
90
Pa rt s and Co mp o n ents
34988 Service Manual
PARTS AND COMPONENTS
Purpose
This section provides illustrations and parts breakdown of all parts of the assembly(ies) shown
on the title page which can be disassembled, repaired or replaced, and reassembled.
HOW TO USE THE PARTS AND COMPONENTS
ILLUSTRATED PARTS LISTING
Disassembly Order System
The disassembly order system used in the
parts list shows the relationship of one part to
another. For a given item, replaceable parts
making up the top assembly or subassembly
depicts the relationship of the item to the associated next higher assembly. Indenture is
not used in this illustrated parts list due to the
relative simplicity of these units.
The letters REF, if used, indicate the item is
listed for reference purposes.
Number Column (No.)
This column contains the callout or index number of a part on the exploded view assembly
drawing. Each number corresponds to a specific part on the drawing. When a triple dash
(---) is shown, the part is either the top assembly
for the drawing, or the part is not illustrated and
therefore not called out.
A Robinair part number assigned a part is five
or six digit drawing number. Part numbers beginning with RA are “Replacement Assembly”
numbers. These numbers depict a kit of parts
or assemblies used to repair or replace certain
parts of the end item.
The illustrated parts list does not list or illustrate
parts which lose their identity by being permanently welded or riveted to other pieces.
Description Column (Description)
This column lists the noun name of the item
followed by any descriptor (Example: GAUGE,
LOW SIDE). In this case “GAUGE” is the noun,
and “LOW SIDE” is the descriptor.
Units Per Assembly (Qty)
The Qty column shows the total number of numbers required per assembly, per subassembly,
and per sub-subassembly as applicable. For
bulk items, the letters AR indicate “as required”.
Part Number Column (Part No.)
This column contains the part number of the
item listed in the Description column. The letters RNS, REF, or the abbreviated Ref. Only, if
used, indicate the item is listed for reference
purposes, but is not available for purchase.
Effectivity Column (Effectivity)
Reference letters (A through Z except I and 0)
are assigned to the Effectivity column to each
top assembly in each IPL figure. The reference
letter of the applicable top assembly is also
shown in the Effectivity column for each detail
part and subassembly. When no reference letter is shown for detail parts and subassemblies,
the item is used on all top assemblies.
Parts Replacement Data
The interchangeability relationship between
parts is identified in the Description column of
the parts list. A list of the terms used to show
interchangeability and their definition is shown
in the table following.
91
P ar ts and C o m p o n e n t s
PARTS LIST
TERM
ABBREVIATION
Optional
OPT
Supersedes
SUPSDS
Superseded
SUPSD BY
Replaced By
REPLD BY
Replaces
REPLS
34988 Service Manual
DEFINITION
This part is interchangeable with other parts in
the same Item number variant group or other
item number if designated
The part in the part number column replaces
and is not interchangeable with the item number
shown in the notation.
The part in the part number column is replaced
by and is not interchangeable with the item number shown in the notation.
The part in the part number column is replaced
by and interchangeable with the item number
shown in the notation.
The part in the part number column replaces and
is interchangeable with the item number shown
in the notation.
Technical Service Bulletin (TSB) Incorporation
Except as indicated below, assemblies, subassemblies and detail parts subject to modification, deletion, addition or replacement by an
issued service bulletin are annotated to show
both pre and post service bulletin configuration.
The term (PRE SB XXXX) in the Description
column designates the original configuration,
and the term (POST SB XXXX) identifies assemblies and parts after the service bulletin
modification has been completed.
Subassemblies and detail parts used on assemblies bearing the pre- or post-service bulletin notation will not carry the same notation
themselves if the use code(s) assigned to them
clearly reflect(s) their pre- or post-service bulletin status.
Items Not Illustrated
Items not illustrated are indicated by a (Not
shown.) notation in the Description column.
Alpha Variant Item Numbers
Alpha variants A through Z (except I and O)
are assigned to an existing item number when
necessary to show:
Added items
Technical Service bulletin modifications
Configuration differences
Optional parts
Product improvement parts (non service
bulletin)
Alpha variant item numbers are not shown on
the exploded view when the appearance and
location of the alpha variant item is the same
as the basic item.
PANZITTA SALES & SERVICE
72 George Avenue
Wilkes-Barre, PA 18705
570-822-6720 800-822-6720
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92
Pa rt s and Co mp o n ents
34988 Service Manual
EXTERNAL ASSEMBLY
ss00489
1
View showing
decal placement.
UV DYE
OIL DRAIN
2
OIL INJECT
4
3
5X 5
7
6
12
4X 5
8
11
13
9
15
10
14
Figure 3-1. External Assembly
PANZITTA SALES & SERVICE
72 George Avenue
Wilkes-Barre, PA 18705
570-822-6720 800-822-6720
www.panzittasales.com
93
P ar ts and C o m p o n e n t s
34988 Service Manual
EXTERNAL ASSEMBLY
No.
---
Description
UNIT, BASIC, 34988, 115 VAC (Domestic)
UNIT, BASIC, 34988-1, 230 VAC (Int’l Only)
1
DECAL, FRONT, ROBINAIR
2
BRACKET, OIL BOTTLE PROTECTION
3
DECAL, 1.5 X 0.75, SILVER
4
PANEL, FRONT SIDEWINDER
5
SCREW, ¼ -20 X ¾ INCH
6
COVER, TOP, SIDEWINDER
7
DECAL, 1-800 PHONE NUMBER
8
DECAL, SERVICE HOSES
9
TAG, POWER CORD
10 DECAL, SERIAL NUMBER (Located on inside of
side support.)
11 STRAP, HOOK AND LOOP
12 MANUALS, OPERATION
13 DECAL, UL
13 DECAL, 34724 FILTER REORDER
14 DOOR, REAR, SIDEWINDER
15 DECAL, WARNING
16* ASSEMBLY, OIL DRAIN BOTTLE
17* ASSEMBLY, DYE INJECT RESERVOIR
18* ASSEMBLY, OIL INJECT RESERVOIR
EFFECTIVITY:
Robinair 34988
Robinair 34988-I
* Denotes items included but not shown.
Qty
--1
1
3
1
9
1
1
1
1
1
Part No.
Ref. Only
Ref. Only
539901
549365
46269
544023
121829
544720
109076
121426
112661
Ref. Only
1
1
1
1
1
1
1
1
1
121925
554228
554227
540600
121575
515770
545771
545772
545773
PANZITTA SALES & SERVICE
72 George Avenue
Wilkes-Barre, PA 18705
570-822-6720 800-822-6720
www.panzittasales.com
94
Effectivity
A
B
A
B
Pa rt s and Co mp o n ents
34988 Service Manual
INTERNAL ASSEMBLY
ss00490
3
2X 4
2
33
2X 4
37
34
1
35
2X 4
36
38
32
39
40
41 2X
5
6 4X
45
4X 31
7
44
8 2X
4X 43 42
30
9 10 3X
44
65
46 47 48
2X 29
11 See Detail A
49
27
2X 28
25
7X 26
17 18
19 See Detail B
64
61
7X 62
53
54
See Detail C
7X 63
60
Figure 3-2. Internal Assembly (Sheet 1 of 2)
PANZITTA SALES & SERVICE
72 George Avenue
Wilkes-Barre, PA 18705
570-822-6720 800-822-6720
www.panzittasales.com
95
P ar ts and C o m p o n e n t s
34988 Service Manual
ss00491
14
11
15
12
13
14
16
Detail A
19
4X 56
57 4X
4X 58
Compressor
Foot
59 4X
Base
Assembly
2X 21
4X 22
4X 23
24
57 4X
4X 55
Detail B (Typical)
Detail C
Figure 3-2. Internal Assembly (Sheet 2 of 2)
96
20
34988 Service Manual
Pa rt s and Co mp o n ents
INTERNAL ASSEMBLY
No.
---
Description
UNIT, BASIC, 34988, 115 VAC (Domestic) (See
Figure 3-1 for next higher assembly.)
UNIT, BASIC, 34988-1, 230 VAC (Int’l Only) (See
Figure 3-1 for next higher assembly.)
1
ASSEMBLY, OIL RESERVOIR LOAD CELL (See
Figure 3-7 for breakdown.)
2
ASSEMBLY, OIL DRAIN LOAD CELL (See Figure
3-7 for breakdown.)
3
ASSEMBLY, DYE BOTTLE BRACKET (See Figure
3-8 for breakdown.)
4
SCREW, M5, BUTTON HEAD
5
PANEL, CONTROL (See Figure 3-3 for breakdown.)
6
SCREW, 8-32 X 3/8 INCH SEMS
7
SUPPORT, CONTROL PANEL
8
SCREW, 8-32 X 3/8 INCH SEMS
9
STATION PUMP, 3 CFM, 115V (See Figure 3-9.)
STATION PUMP, 3 CFM, 230V (Int’l Only) (See
Figure 3-9.)
10 SCREW, ¼-20 X 1 INCH
11 HOSE, FLUSHING (See Detail A)
Detail A (Items 12 through 16)
12 FITTING, SPECIAL
13 FITTING, SPECIAL
14 O-RING
15 FITTING, R134A, HIGH SIDE
16 FITTING, R134A, LOW SIDE
***End Detail A***
17 RUBBER BUMPER
18 SCREW, PLASTITE, ¼ X ¾ INCH
19 ISV ASSEMBLY (See Figure 3-4 for breakdown.)
ISV ASSEMBLY (See Figure 3-5 for breakdown.)
Detail B (Items 20 through 23)
20 SCALE ASSEMBLY
21 BOLT, SERRATED HD, ¼-20 X ½ INCH
22 WASHER, FENDER, ¼ INCH ID
23 LOCKNUT, ¼-20
24 MAGNET
***End Detail B***
Qty
---
Part No.
Ref. Only
Effectivity
A
B
1
RA20055
1
RA20055
1
545762
6
1
516612
547715
4
1
2
1
514514
122268
514514
RA20031
RA20075
3
1
Ref. Only
546946
1
1
3
1
1
546871
546872
10267
546882
546883
1
1
1
122256
123497
Ref. Only
1
2
4
4
1
RA20002
122255
Ref. Only
Ref. Only
539903
A
B
A
B
97
P ar ts and C o m p o n e n t s
34988 Service Manual
INTERNAL ASSEMBLY
No.
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
98
Description
CENTER DIVIDER
SCREW, PLASTITE, ¼ X ¾ INCH
SHELF, VACUUM PUMP
SCREW, PLASTITE, ¼ X ¾ INCH
NUT, 8-32 SEMS
PCB ASSEMBLY, RELAY BOARD
SCREW, 6-32 X 1/4 INCH
BOTTLE, OIL DRAIN
BULKHEAD, 1/2 ACME X 1/8 NPTF FE
FITTING, 1/8 MP X 3/8 COMPRESSION
WASHER, 1/2 INT TOOTH - ZINC
NUT, 1/2 ACME
BUSHING, HEYCO
CABLE, POWER
CABLE, POWER (Int’l Only)
HOSE, CHARGE
FAN ASSEMBLY, 115V
FAN ASSEMBLY, 230V (Int’l Only)
SCREW, 10-16 X 3/4 INCH
POWER SUPPLY, 12 VOLT
SCREW, SOCKET HEAD CAP
EDGE TRIM, RUBBER
CIRCUIT BREAKER, 15 Amp
CIRCUIT BREAKER, 7 Amp (Int’l Only)
MAINIFOLD ASSEMBLY (See Figure 3-6 for
breakdown.)
SCREW, 1/4-20 X 1/2
SCREW, ¼-20 X 3-1/2 INCH
DOOR LATCH KIT (Contains items 42, 43, 44.)
(Part of RA19916 Fastener and Seal Kit.)
RETAINER, DOOR LATCH (Part of RA19632)
RECEPTACLE, DOOR LATCH (Part of RA19632)
LATCH, DOOR (Part of RA19632)
INSERT, DIE-CUT FOAM
COMPRESSOR ASSEMBLY, 115V (See Figure
3-10.)
COMPRESSOR ASSEMBLY, 230V (Int’l Only) (See
Figure 3-10.)
Qty
1
7
1
2
2
1
4
1
2
2
2
2
1
1
1
Part No.
543170
123497
544769
123497
112414
RA20070
Ref. Only
121588
117328
122912
110646
112122
100385
122770
545162
539007
RA17416
RA17516
122257
RA20014
RS-9102
Ref. Only
518638
552036
RA20078
1
1
2
109556
Ref. Only
RA19632
2
2
2
1
1
Ref. Only
Ref. Only
Ref. Only
541742
RA20020
A
RA20076
B
1
1
2
1
4
A/R
1
Effectivity
A
B
A
B
A
B
34988 Service Manual
Pa rt s and Co mp o n ents
INTERNAL ASSEMBLY
No.
Description
Detail C (Items 55 through 59)
55 LOCKNUT, ¼-20
56 BOLT, SERRATED HD, ¼-20 X 2-INCH
57 WASHER, FENDER, ¼ INCH ID
58 SLEEVE, COMPRESSOR (Part of RA20020 and
RA20076.)
59 GROMMET, COMPRESSOR (Part of RA20020 and
RA20076.)
***End Detail C***
60 BASE ASSEMBLY (See Figure 3-11 for breakdown.)
61 SIDE SUPPORT ASSEMBLY
62 SCREW, PLASTITE, ¼ X ¾ INCH
63 WASHER, FLAT ¼ INCH
64 NUT, HEX, 8-32 SEMS
65 SCREW, 8-32 X 3/8 INCH SEMS
EFFECTIVITY:
Robinair 34988
Robinair 34988-I
Qty
Part No.
4
4
8
4
Ref. Only
119105
Ref. Only
Ref. Only
4
Ref. Only
1
544094
1
7
7
2
1
546620
121829
12719
112414
514514
Effectivity
A
B
PANZITTA SALES & SERVICE
72 George Avenue
Wilkes-Barre, PA 18705
570-822-6720 800-822-6720
www.panzittasales.com
99
P ar ts and C o m p o n e n t s
34988 Service Manual
HEAD ASSEMBLY
ss00481
1
6
6
5 2X
5 2X
4
4
2
3
7
8 2X
9 10 4X
11
FRONT VIEW
RIGHT
SIDE
VIEW
12
13
4 2X (Ref.)
REAR VIEW
5 4X (Ref.)
4X 21
6 2X (Ref.)
4X 20
19
14
15
17
18 2X
16 4X
Figure 3-3. Head Assembly
100
PANZITTA SALES & SERVICE
72 George Avenue
Wilkes-Barre, PA 18705
570-822-6720 800-822-6720
www.panzittasales.com
34988 Service Manual
Pa rt s and Co mp o n ents
CONTROL PANEL ASSEMBLY
No.
---
Description
CONTROL PANEL ASSEMBLY (See Figure 3-1 for
Next Higher Assembly)
1
OVERLAY, OEM
2
GAUGE, LOW SIDE, GENERIC
3
GAUGE, HIGH SIDE, GENERIC
4
BRACKET, GAUGE
5
NUT, HEX, 10-32 SEMS
6
CONNECTOR, 1/8 NPTF X 1/8 PNEUMATIC
7
LIGHT KIT
8
SCREW, 8-32 x 3/6-IN SEMS
9
DISPLAY
10 SCREW, MACHINE, 4-40 X .25 TORX
11 KEYPAD
12 SWITCH, DPST, I/O
13 PRINTER
14 BUZZER/BEEPER
15 PCB ASSEMBLY, SD CARD, NGEN, RRR
16 STANDOFF, PCB, 1/4” SNAP
17 BRACKET, SD, MOUNTING
18 NUT, HEX, 6-32 SEMS
19 PCB ASSEMBLY, DISPLAY/CONTROL BOARD
20 STANDOFF, 4-40 X .175 LONG
21 NUT, 4-40 SEMS
Effectivity:
Robinair 34988
Robinair 34988-I
Qty
1
Part No.
547715
1
1
1
2
4
2
1
2
1
4
1
1
1
1
1
4
1
2
1
4
4
548145
539955
539956
552900
112415
121771
121587
514514
547373
548667
547944
112341
545822
550708
539649
539948
548139
110068
RA20069
550709
117693
Effectivity
A
B
101
P ar ts and C o m p o n e n t s
34988 Service Manual
ISV ASSEMBLY (DOMESTIC)
ss00136
1
2
8
3
7
4
LIQUID
V
SCALE: 1=4
6
SCALE: 1=4
5
11
10
12
9
VAPOR
AIR
PURGE
PANZITTA SALES & SERVICE
72 George Avenue
Wilkes-Barre, PA 18705
570-822-6720 800-822-6720
www.panzittasales.com
LIQUID
13
Figure 3-4. ISV Assembly (Domestic)
102
Pa rt s and Co mp o n ents
34988 Service Manual
ISV ASSEMBLY (INT’L)
SS00440
1
2
1
3
5
6
4
7
8
Figure 3-5. ISV Assembly (Int’l)
103
P ar ts and C o m p o n e n t s
34988 Service Manual
ISV ASSEMBLY, DOMESTIC
No.
--1
2
3
4
5
6
7
8
9
10
11
12
13
Description
ISV ASSEMBLY, DOMESTIC (See Figure 3-2 for
next higher assembly.)
TEMPERATURE PROBE
TRANSDUCER, AIR PURGE
TEE, MALE BRANCH 1/8 NPTF
ORIFICE, UNION, .026
MUFFLER, AIR EXHAUST
PRESSURE RELIEF, 450PSI
FITTING, TEE, .25FP X .25FP X .25MP
VALVE, BALL
FITTING, STRAIGHT
SOLENOID, 12VDC, DISCRETE
VALVE, BALL
VALVE, BALL
TANK, ISV
Qty
---
Part No.
Ref. Only
1
1
1
1
1
1
1
1
1
1
1
1
1
539472
RA20067
539654
539804
519605
RA20079
508690
540322
210312
RA20009
539799
539798
539477
Effectivity
All Domestic Models
ISV ASSEMBLY, INTERNATIONAL
No.
--1
2
3
4
5
6
7
8
Description
ISV ASSEMBLY, INT’L (See Figure 3-2 for next
higher assembly.)
SOLENOID, 12VDC, DISCRETE
TEMPERATURE PROBE
VALVE, BALL
TRANSDUCER, AIR PURGE
MUFFLER, AIR EXHAUST
ORIFICE, UNION, .026
FITTING, TEE, 1/8FP X 1/8FP X 1/8MP
TANK, ISV
Qty
---
Part No.
Ref. Only
1
1
1
1
1
1
1
1
RA20009
539472
544672
RA20067
519605
539804
508690
543184
PANZITTA SALES & SERVICE
72 George Avenue
Wilkes-Barre, PA 18705
570-822-6720 800-822-6720
www.panzittasales.com
104
Effectivity
All Int’l
Models
Pa rt s and Co mp o n ents
34988 Service Manual
MANIFOLD ASSEMBLY
3
ss00408
2
4
5
4
6
2
1
20°
10°
8
9
10
3
65°
55°
7
Figure 3-6. Manifold Assembly (Sheet 1 of 3)
105
P ar ts and C o m p o n e n t s
ss00409
34988 Service Manual
12
13 13X
11
14 2X
15
16
4
23
17
4
12
22
18
12
19
3
3
20 21 2X
12
Figure 3-6. Manifold Assembly (Sheet 2 of 3)
106
PANZITTA SALES & SERVICE
72 George Avenue
Wilkes-Barre, PA 18705
570-822-6720 800-822-6720
www.panzittasales.com
Pa rt s and Co mp o n ents
34988 Service Manual
ss00410
27
26
28
29
30
25
24 2X
31
30
32
34
33
35
Figure 3-6. Manifold Assembly (Sheet 3 of 3)
PANZITTA SALES & SERVICE
72 George Avenue
Wilkes-Barre, PA 18705
570-822-6720 800-822-6720
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107
P ar ts and C o m p o n e n t s
34988 Service Manual
MANIFOLD ASSEMBLY
No.
--1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
108
Description
MANIFOLD ASSEMBLY (See Figure 3-2 for next
higher assembly.)
ELBOW, 1/8 MP X1/8 PNEUMATIC (See Note F.)
SOLENOID, 12VDC, DISCRETE (S13 and S14)
ELBOW, COMPRESSION, 1/8 MP X 3/8 INCH
PNEUMATIC (See Note F.)
FITTING, COMPRESSION, 1/8 NPT X ¼ INCH (See
Note F.)
VALVE, CHECK (See Note E.)
TEE, MALE BRANCH, 1/8 NPTF(See Note F.)
BALL, MANIFOLD PLUG
CAP, ¼ INCH FLARE W/O-RING(See Notes F and
G.)
VALVE CORE, SCHRADER (See Note A.) (Part of
RA19916)
FITTING, ¼ MFL X 1/8 NPTF(See Note F.)
SWITCH, HIGH PRESSURE CUT-OUT
VALVE, CHECK (75 IN-LB) (See Note F.)
SOLENOID, 12VDC, MANIFOLD (See Note D.) (S1
thru S12 and S16)
FITTING, HALF UNION, .12 MP X .25 FL(See Note
F.)
VALVE, CHECK PCV2003HNBR1
ELBOW, 1/8 FP X 1/8 FP
ELBOW, 12NPTF X .25 TUBE
CONNECTOR, 1/8 NPTF X 1/8 PNEUMATIC (See
Note F.)
AIR PURGE TRANSDUCER
TUBE, MANIFOLD CONNECTOR (See Note C.)
O-RING, NEOPRENE W
SCREW, SOCKET HEAD (See Note B.)
ACCUMULATOR TRANSDUCER
O-RING (See Note H.)
O-RING, CO873 2-240 (See Note G.)
O-RING (See Note G.)
O-RING (See Note G.)
FILTER ELEMENT, COALESCING
BOWL, OIL SEPARATOR (See Note A.)
UNION, 1/8 MP X 1/8MP X .97(See Note F.)
EXCHANGER, HEAT
Qty
---
Part No.
RA20078
1
2
3
123928
RA20009
122950
2
122917
1
1
5
1
RA20015
539654
Ref. Only
111098
1
Ref. Only
1
1
7
13
100272
RA19427
RA20016
RA20010
2
122912
2
1
1
2
124175
118974
535066
121771
1
1
2
1
2
2
1
1
1
1
1
2
1
539229
537991
105358
10001
RA20066
18190
539668
123785
123786
123787
Ref. Only
101307
523477
Effectivity
Pa rt s and Co mp o n ents
34988 Service Manual
MANIFOLD ASSEMBLY
No.
Description
32 SHELL, ACCUMULATOR
33 FILTER DRIER, SPIN ON
34 MANIFOLD BLOCK, LOWER
35 MANIFOLD BLOCK, TOP
EFFECTIVITY:
Robinair 34988
Robinair 34988-I
A.
B.
C.
D.
E.
F.
G.
Qty
1
1
1
1
Part No.
Ref. Only
34724
Ref. Only
Ref. Only
Effectivity
A
B
MANIFOLD ASSEMBLY NOTES
Torque Shrader valve core (item 14) and Oil Bowl Separator (item 25) to 1.5-3.0 IN-LB.
Torque to 30 IN-LB.
Apply Loctite 242 to threads of Manifold Connection Tube (item 16), then torque to 75 IN-LB.
Torque Manifold Solenoids (item 13) to manifold at 75 (±5) IN-LB.
Torque Check Valve (item 12) to 75 (±5) IN-LB; 6-places.
Apply Loctite 565 on all pipe threads.
Lubricate all O-rings on components before assembly.
PANZITTA SALES & SERVICE
72 George Avenue
Wilkes-Barre, PA 18705
570-822-6720 800-822-6720
www.panzittasales.com
109
P ar ts and C o m p o n e n t s
34988 Service Manual
LOAD CELL ASSEMBLY
ss00500
1
2
5
4
3
Figure 3-7. Load Cell Assembly
LOAD CELL ASSEMBLY
No.
---
Description
ASSEMBLY, OIL RESERVOIR LOAD CELL (See
Figure 3-2 for next higher assembly.)
ASSEMBLY, OIL DRAIN LOAD CELL See Figure
3-2 for next higher assembly.)
1
BRACKET, UPPER OIL BOTTLE
2
HANGER ASSEMBLY
3
LOAD CELL
4
SCREW, M5, BUTTON HEAD
5
ELBOW, 1/8 NPTF X 1/4 COMPRESSION
ELBOW, 1/8 X 3/16
EFFECTIVITY:
Reservoir Load Cell
Drain Load Cell
110
Qty
1
Part No.
RA20055
1
1
1
1
2
1
1
Effectivity
A
B
544893
545670
545592
516612
539544
530699
A
B
A
B
Pa rt s and Co mp o n ents
34988 Service Manual
DYE BOTTLE BRACKET ASSEMBLY
ss00499
1
2
3
Figure 3-8. Dye Bottle Bracket Assembly
DYE BOTTLE BRACKET ASSEMBLY
No.
--1
2
3
Description
ASSEMBLY, DYE BOTTLE BRACKET (See Figure
3-2 for next higher assembly.)
RECEPTICAL, QUICK RELEASE
BRACKET, UPPER DYE BOTTLE
FITTING, 1/8 NPT X1/4 COMPRESSION
Qty
1
Part No.
545762
1
1
1
545774
544887
122917
Effectivity
111
P ar ts and C o m p o n e n t s
34988 Service Manual
VACUUM PUMP ASSEMBLY
ss00138
1
3
4
2
5
6
7
8
Figure 3-9. Vacuum Pump Assembly
VACUUM PUMP ASSEMBLY
No.
---
Description
VACUUM PUMP ASSEMBLY, 3 CFM, 115VAC
VACUUM PUMP ASSEMBLY, 3 CFM, 230VAC
1
PUMP ASSEMBLY
2
RESERVOIR ASSEMBLY
3
BRASS DISCHARGE FITTING (Part of Item 2)
4
BRASS INLET FITTING (Part of Item 2)
5
SIGHT GLASS NUT (Part of Item 2)
6
OIL FILL PLUG (Part of Item 2)
7
SIGHT GLASS ASSY W/O-RING (Part of Item 2)
8
OIL DRAIN ASSEMBLY W/CAP (Part of Item 2)
EFFECTIVITY:
Robinair 34988
Robinair 34988-I
112
Qty
1
1
1
1
1
1
1
1
1
Part No.
RA20031
RA20075
RA20017
RA19950
Ref. Only
Ref. Only
Ref. Only
RA20019
Ref. Only
Ref. Only
Effectivity
A
B
A
B
Pa rt s and Co mp o n ents
34988 Service Manual
COMPRESSOR ASSEMBLY
ss00137
Discharge
Compressor Oil
Return (Suction)
Suction
1
Figure 3-10. Compressor Assembly
PANZITTA SALES & SERVICE
72 George Avenue
Wilkes-Barre, PA 18705
570-822-6720 800-822-6720
www.panzittasales.com
113
P ar ts and C o m p o n e n t s
34988 Service Manual
COMPRESSOR ASSEMBLY, 115 AND 230V
No.
---
Description
COMPRESSOR, 115V (Domestic)
COMPRESSOR, 230V (Int’l Only)
1
ELECTRICAL SERVICE KIT, 115V (Includes thermal protector, start relay, capacitor, capacitor
cap, and capacitor leads.)
ELECTRICAL SERVICE KIT, 230V (Includes thermal protector, start relay, capacitor, capacitor
cap, and capacitor leads.)
EFFECTIVITY:
Robinair 34988
Robinair 34988-I
114
Qty
----1
Part No.
RA20020
RA20076
RA20060
Effectivity
A
B
A
RA20061
B
A
B
Pa rt s and Co mp o n ents
34988 Service Manual
BASE ASSEMBLY
ss00144
1
6 2X
4 2X
3 2X
1
2X
2
2X 7
7X 8
Figure 3-11. Base Assembly
BASE ASSEMBLY
No.
--1
2
3
4
5
6
7
8
Description
BASE ASSEMBLY (See Figure 1 for next higher
assembly.)
BASE
COTTER PIN
WASHER, FLAT, .500 ID
WHEEL, PNEUMATIC, GRAY, 10 INCH
BUSHING, WHEEL
AXLE
CASTER, 5 INCH DIA X 2 INCH WIDE
SCREW, PLASTITE, ¼ INCH X 1 INCH
Qty
1
Part No.
544094
1
2
2
2
2
1
2
8
Ref. Only
100723
102755
121841
Ref. Only
Ref. Only
RA19631
Ref. Only
Effectivity
115
P ar ts and C o m p o n e n t s
34988 Service Manual
WIRING HARNESS DIAGRAM
ss00501
Oil Drain
Load Cell
ISV Assembly
Oil Inject
Load Cell
Manifold
Assembly
Accumulator
Transducer
Air Purge
Transducer
High-Side Inlet
Transducer
Temperature Probe
S15 - Air Purge
Low-Side
Transducer
Indicator
Lamp
3
2
S3 - Oil Inject
S4 - Deep Recover
4
18
1
Scale
Assembly
S7 - HS Inlet
S8 - Vacuum
S9 - LS Inlet
5
Beeper
S13 - Oil Return
J12
J11
17
J20
J13
Display
Control
Board J25
16
S14 - Oil Drain
J15
S2 - HS Clear
J5
J18
S5 - HS Charge
S6 - LS Charge
J8
S10 - Recover
J10
J16
S11 - Tank Fill
S16 - Dye Inject
J21
14
J1
15
6
J6
J4
J1
S1 - N Discharge
H P Switch
J3
J2
13
Printer
J19
J17
J14
J18
J12
J8
J5
J4
J3
SD
Card
S12 - Pwr Charge
J7
Vacuum
Pump
PRN1
PRN2
9
12
11
Circuit
Breaker
12VDC
74
1
75 74
2 1
Power
Switch
Power
Switch
(115VAC)
(220VAC)
2A 1A
71 73
2A 1A
88 89
10
122770
Compressor
J2
Power Supply
}
}
X
75
2
J1
X or Y
Y
8
7
Fan
GND
(72 or 85)
10
545162
220VAC
115VAC
Figure 3-12. Electrical Diagram
WIRING HARNESS DIAGRAM
No.
1
116
Description
HARNESS, TRANSDUCER WIRE, (RELAY BOARD
J7, J8, J12, J13, AND J14 TO TRANSDUCERS
PT20, TS, PT21, PT22, and PT23)
Qty
1
Part No.
549383
Effectivity
34988 Service Manual
Pa rt s and Co mp o n ents
WIRING HARNESS DIAGRAM
No.
2
3
4
5
6
7
8
9
10
11
Description
OIL DRAIN LOAD CELL TO RELAY BOARD J21
(Part of Load Cell Assembly p/n RA20055. See
Figure 3-7.)
OIL INJECT LOAD CELL TO RELAY BOARD J10
(Part of Load Cell Assembly p/n RA20055. See
Figure 3-7.)
HARNESS, MANIFOLD 2, (RELAY BOARD J11 TO
SOLENOIDS S3, S4, S7, S8, S9, S12, S13, AND
S14)
HARNESS, MANIFOLD 1, (RELAY BOARD J17
AND J18 TO SOLENOIDS S1, S2, S5, S6, S10,
S11, S15, and S16)
HARNESS, HIGH PRESSURE SWITCH, (RELAY
BOARD J4 TO HPS)
HARNESS, COMPRESSOR PIGTAIL TO HARNESS 539989 (ITEM 6)
HARNESS, COMPRESSOR/FAN/PUMP WIRE (RELAY BOARD J16 TO VACUUM PUMP, FAN, AND
COMPRESSOR THROUGH HARNESS 544997
[ITEM 5])
HARNESS, POWER SUPPLY (RELAY BOARD J2
TO POWER SUPPLY J1 AND J2, AND DISPLAY
BOARD J5)
POWER CABLE (POWER SWITCH TERMINALS
1A AND 2A, AND GROUND)
HARNESS, POWER WIRE (RELAY BOARD J1
AND J3 TO POWER SWITCH TERMINALS 1 AND
2, CIRCUIT BREAKER, AND GROUND)
12 HARNESS, PRINTER COMMUNICATION (PRINTER PRN2 TO DISPLAY BOARD J12)
13 HARNESS, PRINTER POWER (PRINTER PRN1
TO DISPLAY BOARD J8)
14 CABLE, SD BOARD (SD BOARD J1 TO DISPLAY
BOARD J4)
15 HARNESS, INTERCONNECT CABLE (RELAY
BOARD J5 TO DISPLAY BOARD J3)
16 HARNESS, RELAY BOARD (J16) TO SCALE (Part
of Scale Assembly p/n 539853. See Figure 2.)
17 HARNESS, BEEPER (BEEPER BP TO DISPLAY
BOARD J25)
18 HARNESS, LIGHT (WHT AND BLK LAMP LEADS
TO DISPLAY BOARD J18)
EFFECTIVITY:
Robinair 34988
Robinair 34988-I
Qty
1
Part No.
Ref.
1
Ref.
1
539987
1
552697
1
539992
1
544997
1
539989
1
545937
1
1
122770
545162
545946
1
545978
1
549380
1
546809
1
545936
1
Ref.
1
551245
1
549382
Effectivity
A
B
A
B
117
P ar ts and C o m p o n e n t s
34988 Service Manual
PLUMBING DIAGRAM
ss00467
2 2X
1
International
ISV
Vacuum Pump
5
3
2X 4
6
14
Dye Inject
High
Side
Low
Side
9
13
Oil Inject
7 8
Domestic
ISV
12
Bulkhead
connectors
in side support
5
11
6
10
Manifold Assembly
15 16
24
17 18 2X
23
Oil Drain
Oil Drain
Bottle
21
22 2X
19 20 2X
Compressor
Figure 3-13. Plumbing Diagram
118
34988 Service Manual
Pa rt s and Co mp o n ents
PLUMBING DIAGRAM PARTS LIST
No.
----1
Description
HIGH SIDE HOSE, RED (Not shown)
LOW SIDE HOSE, BLUE (Not shown)
VACUUM HOSE, LOW SIDE, TUBING, ¼ INCH OD
X 0.040 INCH ID
2
NUT, COMPRESSION, ¼ INCH TUBE
3
VACUUM HOSE, HIGH SIDE, TUBING, 3/8 INCH
HIGH PRESSURE
4
NUT, COMPRESSION, 3/8 INCH TUBE
5
HOSE, ISV LIQUID
6
HOSE, ISV VAPOR
7
OIL INJECT TUBE, ¼ INCH OD X 0.040 INCH ID
8
NUT, COMPRESSION, ¼ INCH TUBE
9
LOW SIDE TUBE, BLUE
10 HOSE, TANK FILL
11 LOW SIDE SERVICE HOSE
12 HIGH SIDE SERVICE HOSE
13 DYE INJECT TUBE
14 HIGH SIDE TUBE, RED
15 VACUUM PUMP EXHAUST TUBE, ¼ INCH OD X
0.040 INCH ID
16 NUT, COMPRESSION, ¼ INCH TUBE
17 SUCTION TUBE, MANIFOLD TO COMPRESSOR,
3/8 INCH HIGH PRESSURE
18 NUT, COMPRESSION, 3/8 INCH TUBE
19 DISCHARGE TUBE, COMPRESSOR TO MANIFOLD
20 O-RING, NEOPRENE
21 COMPRESSOR OIL RETURN TUBE, 3/8 INCH
HIGH PRESSURE
22 NUT, COMPRESSION, 3/8 INCH TUBE
23 OIL DRAIN TUBE, NYLON, 1/8 INCH OD X .070 ID
24 STA-STRAP, 8 INCHES LONG X .18 THK
EFFECTIVITY:
Robinair 34988
Robinair 34988-I
Qty
1
1
19”
Part No.
112192
112193
120225
2
16”
RA20007
RA20005
1
1
1
23”
1
19”
1
14”
14”
16”
16”
28”
RA20006
541533
539068
120225
RA20007
539672
539007
539673
539673
120225
539671
120225
1
15.5”
RA20007
RA20005
2
1
RA20006
538469
2
11”
RA19916
RA20005
2
36”
2
RA20006
280944
102338
Effectivity
A
B
119