Giant GP7622 User manual

Contents:
Installation Instructions: page 2-6
Pump Specications: page 7
Exploded View: page 8
Parts List: page 9
Kits: page 10
Torque Specications: page 10
Repair Instructions: pages 11-14
Dimensions: page 15
Warranty Information: back page
Triplex Ceramic
Plunger Pump
Operating Instructions/
Repair and Service
Manual
Model
GP7622

2
Performance data for intermittent operation, data for
continuous operation on request.
For information on intermittent operation and
calculating of the performance data, see the Giant
assembly instructions.
NPSHR / Inlet pressure
Required NPSH refers to water (at 68 °F or 20 °C) at
maximum permissible pump speed.
Maximum inlet pressure: 29 PSI (2.0 bar).
Level of noise emission
Emission sound pressure level ≤93 dB(A)
2. Fields of application
The elds of application of these pump types
correspond to the specications in the assembly
instructions of Giant pumps.
3. Ambient conditions
Ambient temperature: 41°F (5°C)<T
Amb.<86°F (30 °C)
4. Oil Filling
• Filling quantity: 1.9 gallons (7.2 L)
• Quality: Industrial gear oil ISO VG
220 or automotive gear
oil SAE 90 GL4 or Giant’s
equivalent (p/n 01154)
• Intervals: rst oil change after
50 operating hours
than every 500
operating hours, but
at the latest after 12
months
5. Installation/Putting into Operation
5.1 Shaft protector
When the pump is in operation, the open shaft
end must be covered up by shaft protector (21),
the driven shaft side and coupling by a contact-
protector.
To cover the exposed crankshaft end, mount the
shaft guard (21) together with the holder (21A) onto
the bearing cover (14) and secure with bearing
cover screws (17).
5.2 Direction of pump rotation
Set the direction of rotation of the drive unit
according to the direction of rotation arrow on the
crankcase.
5.3 Suction line lter
Recommended mesh size 50 μm.
6. Operation
Maximum operation pressure is attainable at 600 -
800 rpm. If the speed is reduced further, the pump
pressure must be reduced in the same proportion
to ensure su󰀩cient gearbox lubrication.
6.1 Discharge Line
The pump comes with two special lens seals (62)
which have to be inserted in to the discharge ports
of the pump. One of the two ports is to be closed
with the included plug (63).
The 1/2” BSP high-pressure hose connection for
the discharge line must be constructed as per the
below drawing to ensure that together with lens
seal (62) the discharge line is completely sealed.
We o󰀨er the high-pressure connection (05361)
with UNF 9/16’’ female threads for high-pressure
ttings.
The two 1/2” BSP connections on the top side of
the valve casing are closed o󰀨 with plug (60) and
copper seal ring (61). These two connections are
for the optional tting of a pressure gauge and/or
safety valve such as our 23140.
Should a pressure gauge or safety valve be
installed, the copper ring (61) must remain in the
bore.
Pressure gauges with a 1/2” BSP connection have
the appropriate contour so that the copper ring sits
properly.
The alignment of the pressure gauge cannot be
determined exactly after tightening.
We o󰀨er the double nipple (05362) for mounting
the 23140 pressure relief valve.
For further information, see assembly
instructions of Giant Pumps

3
7. Maintenance and Servicing
For the type of thread lock used and the required
tightening torques, observe the table in the exploded
view.
7.1 Special tools required
The following special tools are required for
assembly:
- Pull-out tool ø24 mm
- Seal extractor tool ø22.4 mm
7.2 Suction and Discharge Valves
Remove hexagon screw (58) and remove valve
casing (54). Pull seal case (38) out of valve casing
(54). Pull valve body (52) and seal case (38) apart.
Using pliers, pull spring guide (55) out of the
valve casing. Remove discharge valve plate (57)
together with spring (56) from spring guide (55).
Check sealing surfaces of the valve body (52) and
discharge valve plate (57). Check discharge valve
spring (56) and border seal ring (53) and replace
where necessary.
A damaged border seal ring (53) must be
replaced before reassembling.
Suction Valves
Remove suction valve spring (50) with valve plate
(51) from seal case (38). Check sealing surfaces
of the valve plate (51) and valve body (52).
Check O-rings (38/A/B/C) and support ring
(38D) before reassembling. Worn parts must be
replaced.
To Check Seals and Plungers
Unscrew hexagon screws (58), and take o󰀨 valve
casing (54). Remove the screw-in joints (70) and
take o󰀨 the elbow pipes (72). Pull seal sleeve
(39/39A) out of the crankcase.
Take the seal tension spring (40) out of seal
sleeve (39/39A).
Using a pliers, remove the clip ring (48) situated
on the other side of the sleeve; then take out
support ring (47) and grooved ring (46) using an
extractor tool (ø24).
Using a seal extractor tool (ø22.4), carefully press
the seal unit comprising guide ring (44), spiral
ring (42) and support ring (41/43) out of the seal
sleeve (39/39A) from the side (39/39A) closest to
the drive.
Check spiral ring (42),Support ring (43), guide
ring (44) and grooved ring (46) and replace where
necessary.

4
Check surface of plunger (36) for damage.
A worn plunger (36) must be removed (27 mm
wrench) and replaced. Due to reasons of precision,
the ceramic plunger alone cannot be exchanged.
Coat the threads of the plunger lightly with an
appropriate bonding agent and tighten plunger to the
required torque.
Check the leakage bores ø4mm of the seal
sleeves (39/39A) and seal cases (38) for dirt
and clean if necessary.
The elbow screw-in joints (70/71) and elbow pipes
(72) must also be checked for dirt and cleaned if
necessary.
For the right sealing sleeve, the leakage hole
ø4 mm must be closed by a nozzle (39B) to
improve water circulation from sealing sleeve
1 to sealing sleeve 3.
Fit the drip-return unit (46/47/48), the high-pressure
seal unit (41/42/43/44) and tension spring (40) into
the seal sleeve.
Then push the assembled seal sleeves (39/39A)
carefully on to the plungers and into the drive;
thereafter, mount elbow pipes (72) as per the
exploded view and tighten the screw-in joints
(70/71) carefully.
Push the valve casing (54) with the seal sleeves
(38) onto the sealing sleeves (39/39A).
Tighten the screws (58) for fastening the valve
housing evenly to the specied torque.
If required, supplementary assembly
instructions can be requested from the
manufacturer Giant.
8. Materials Used
Valve Casing: AISI CA-6-NM
Plunger: AISI 329 hard metal coated
Valves: Duplex-Steel / 1.4460 / 1.4462
Seals: Aramid Packing with Teon
O-Rings: Nitrile
9. Paint
The pump drive is painted in RAL 3001 as
standard.
GP7622 TORQUE SPECIFICATIONS
Position Item # Thread Description Lubrication Info Torque Amount
105769 Crankcase Molycote Cu-Paste
505798 Seal for Crankcase Cover Loctite 5910
10 22706 M10 Hexagon Screw 33 ft.-lbs. (45 Nm)
12 07109 1/2” BSP Drain Plug 30 ft.-lbs. (40 Nm)
15 05771 Radial Shaft Seal Loctite 403
17 05642 M12 Hexagon Socket Screw 33 ft.-lbs. (45 Nm)
24 05770 M10 Connecting Rod Assembly 22 ft.-lbs. (30 Nm)
32 07624 Radial Shaft Seal Loctite 403
36 06748 27mm Plunger 33 ft.-lbs. (45 Nm)
38 03452 Seal Sleeve Copper Paste/
Crankcase outside
58 03464 M16 Hexagon Socket Screw 173 ft.-lbs. (235 Nm)
60 04061 Plug, 1/2” BSP Anti Seize 350
63 05373 Plug, 1/2” BSP Anti Seize 350
64 12249 Plug, 1” BSP Anti Seize 350
69 03141 Connection Nipple Anti Seize 350

5
1450 = hp
U.S. Metric
Maximum Volume................................................... 12.7 GPM................................................48 L/min
Maximum Discharge Pressure ............................... 15,000 PSI ............................................. 1000 Bar
Speed .....................................................................................................................................800 RPM
Power Consumption ............................................... 126.4 HP ................................................. 94.3 kW
Maximum Inlet Pressure......................................... 29 PSI .......................................................... 2 Bar
Plunger Diameter.................................................... 0.87”............................................................22mm
Plunger Stroke........................................................ 2.28”............................................................58mm
Crankshaft Diameter....................................................................................................................48mm
Key Width ....................................................................................................................................14mm
Crankshaft Mounting ............................................................................................................Either side
Shaft Rotation....................................................................................... Top of pulley towards manifold
Maximum Temperature of Pumped Fluids.............. 104 oF........................................................... 40o C
Inlet Ports .............................................................................................................................(2) 1” BSP
Discharge Ports............................................................................................................. (2) M24 x 1.25
Weight .................................................................... 379 lbs. ......................................................172 kg
Crankcase Oil Capacity.......................................... 1.9 Gal. .........................................................7.2 L
Fluid End Material..........................................................................................................Stainless Steel
Level of Noise Emmission .................................................................................................... ≤93 dB(A)
Ambient Conditions ................................................ 23 °F <Tamb<86 °F....................... 5 °C<Tamb<30 °C
Specications Model GP7622
HORSEPOWER RATINGS:
The rating shown are the power require-
ments for the pump. Gas engine power
outputs must be approximately twice the
pump power requirements shown above.
We recommend a 1.15 service factor be speci-
ed when selecting an electric motor as the
power source.
To compute specic pump horsepower require-
ments, use the following formula:
GPM X PSI
Consult the factory for special requirements that must be met if the
pump is to operate beyond one or more of the limits specied above.
GP7622 Horsepower Requirements
RPM GPM 5000 PSI 7000 PSI 9000 PSI 10,000 PSI 15,000 PSI
400 6.4 22.1 30.9 39.7 44.1 66.2
550 8.7 30.0 42.0 54.0 60.0 90.0
600 9.5 32.8 45.9 59.0 65.5 98.3
650 10.3 35.5 49.7 63.9 71.0 106.6
700 11.1 38.3 53.6 68.9 76.6 114.8
750 11.9 41.0 57.5 73.9 82.1 123.1
800 12.7 43.8 61.3 78.8 87.6 131.4

6
Exploded View - GP7622
The stainless steel valve plugs (60/63/64 and the high pressure connection 05361) can seize when
being screwed out of the casing. To release tension beforehand, strike the plugs 1-2 times with a steel
hammer on the top before screwing them out. Coat threads with antiseize (eg. ProPack 350) before
reinstalling.

7
GP7622 PARTS LIST
ITEM PART DESCRIPTION QTY.
1 05769 Crankcase 1
1A 05525 Head for Oil Dipstick 1
1B 01009 O-Ring 1
2 13000 Oil Filler Plug Assembly 1
4 07601 Crankcase Cover 1
5 05798 Seal for Crankcase Cover 1
8 07603 Oil Dip Stick Assembly 1
9 01009 O-Ring, Dip Stick 1
10 22706 Hexagon Screw 8
11 06725 Spring Washer 8
12 07109 Drain Plug 8
13 06272 Copper Seal Ring, 1/2” 8
14 05770 Bearing Cover 2
14A 12204 O-Ring 8
15 05771 Radial Shaft Seal 2
16 05772 O-Ring for Bearing Cover 2
17 05642 Hexagon Socket Screw 8
18 05039 Spring Washer 8
19 03448 Spacer Disc 2
20 03449 Taper Roller Bearing 2
20A 04570 Shim, 0.15 mm 1-2
20B 05794 Shim, 0.1 mm
(may not be present) 1-5
21 05645 Shaft Guard Holder 1
21A 05646 Shaft Guard 1
22 03450 Crankshaft 1
23 07614 Key 1
24 05770 Connecting Rod Assembly 3
25 05778 Crosshead Assembly 3
28 05779 Crosshead Pin 3
30 03451 Cover Plate 1
30A 07225-0100 Hexagon Screw 8
30B 13136 Grommet 4
30C 08280 Disc 8
30D 13154 Cover 1
31 07623 Eye Bolt 1
32 07624 Radial Shaft Seal 3
33 07626 Seal Retainer 3
33A 07627 O-Ring for Seal Retainer 3
33B 07628 Circlip for Seal Retainer 3
33C 07249 Fitting Disc 3
34 13137 Oil Scraper (Flinger) 3
36 06748 Plunger 3
38 03452 Seal Sleave 3
ITEM PART DESCRIPTION QTY.
38A* 13286 O-Ring 3
38B* 07303 O-Ring 3
38C* 07332 O-Ring 6
38D* 07683 Support Ring 6
39 03453 Seal Sleeve 2
39A 03454 Seal Sleeve, Middle 1
39B 03455 Nozzle, Weep Return 1
39C*+ 03456 Tolerance Disc 1
39D 07204-0100 Seal Ring, Steel 6
40 07338 Tension Spring 3
41 06753 Support Disc 3
42* 06754 Spiral Ring (Packing) 6
43* 06755 Support Ring 6
44* 06756 Guide Ring 3
46* 13390 Seal Ring 3
47 06758 Spacer Disc 3
48* 05524 Circlip 3
49 03457 Stopper 3
50+ 05450 Valve Spring 3
51+ 03458 Inlet Valve Plate 3
52 03459 Valve Body 3
53+ 03460 Seal Edge Ring 3
54 03461 Valve Casing 1
55+ 03462 Valve Spring Guide 3
56+ 06959 Valve Spring, Heavy Duty 3
57+ 03463 Discharge Valve Plate 3
58 03464 Hexagon Socket Screw 8
59 03465 Washer 8
60 04061 Plug, 1/2” BSP 2
61 12332 Copper Seal Ring 2
62 03466 Lens Seal 2
63 05373 Plug, 1/2” BSP 1
64 12249 Plug, 1” BSP 1
65 13372-0300 Seal Ring, Copper 1
66 13362 Disc for Crankshaft 1
67 13358 Hexagon Screw 1
69 03141 Connection Nipple 1
70 06588 Straight Screw Joint 4
71 06589 Hexagon Socket Plug, 1/8” 2
72 03467 U-Pipe for Rinsing Line 2
* 09853 Seal Repair Kit
+ 09854 Valve Repair Kit

GIANT INDUSTRIES, INC. 900 N. Westwood Ave., Toledo, Ohio 43607
Phone: [phone] FAX [phone], www.giantpumps.com
 Copyright 2022 Giant Industries, Inc.
08/22 GP7622.indd
GIANT INDUSTRIES LIMITED WARRANTY
Giant Industries, Inc. pumps and accessories are warranted by the manufacturer to be free from defects in
workmanship and material as follows:
1. Five (5) years from the date of shipment for all pumps used in portable pressure
washers with NON-SALINE, clean water applications.
2. Two (2) years from the date of shipment for Giant pumps used in car wash
applications.
3. One (1) year from the date of shipment for all other Giant industrial and
consumer pumps.
4. Six (6) months from the date of shipment for all rebuilt pumps
5. Ninety (90) days from the date of shipment for all Giant accessories.
This warranty is limited to repair or replacement of pumps and accessories of which the manufacturer’s
evaluation shows were defective at the time of shipment by the manufacturer. The following items are NOT
covered or will void the warranty:
1. Defects caused by negligence or fault of the buyer or third party.
2. Normal wear and tear to standard wear parts.
3. Use of repair parts other than those manufactured or authorized by Giant.
4. Improper use of the product as a component part.
5. Changes or modications made by the customer or third party.
6. The operation of pumps and or accessories exceeding the specications set forth
in the Operations Manuals provided by Giant Industries, Inc.
Liability under this warranty is on all non-wear parts and limited to the replacement or repair of those products
returned freight prepaid to Giant Industries which are deemed to be defective due to workmanship or failure of
material. A Returned Goods Authorization (R.G.A.) number and completed warranty evaluation form is required
prior to the return to Giant Industries of all products under warranty consideration. Call (419)-531-4600 or fax
(419)-531-6836 to obtain an R.G.A. number.
Repair or replacement of defective products as provided is the sole and exclusive remedy provided hereunder
and the MANUFACTURER SHALL NOT BE LIABLE FOR FURTHER LOSS, DAMAGES, OR EXPENSES,
INCLUDING INCIDENTAL AND CONSEQUENTIAL DAMAGES DIRECTLY OR INDIRECTLY ARISING FROM
THE SALE OR USE OF THIS PRODUCT.
THE LIMITED WARRANTY SET FORTH HEREIN IS IN LIEU OF ALL OTHER WARRANTIES OR
REPRESENTATION, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY WARRANTIES
OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND ALL SUCH WARRANTIES
ARE HEREBY DISCLAIMED AND EXCLUDED BY THE MANUFACTURER.
WARNING: This product might contain a chemical known to the State of California to cause
cancer, and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov
GP7622 Dimensions - Inches (mm)