Uni-ram UG7500W User manual

REV 2023-03
USER MANUAL
SPRAY GUN CLEANERS - WATER BASED PAINTS
UG7500W
UNI-RAM CORPORATION • ONTARIO • CANADA
CAUTION
FOR WATER BORNE PAINTS ONLY
THIS UNIT IS NOT DESIGNED
FOR USE WITH SOLVENT BASED PAINT

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MANUAL - SPRAY GUN CLEANERS - UG7500W REVISED 2023-03
INTRODUCTION
Uni-ram holds many patents on designs used in its innovative products. Every machine is tested for compliance
with Quality Assurance standards. Follow the directions in this manual under Setup, Operation and Maintenance
in order to operate this machine safely and effectively. Not following these instruction can lead to malfunction or
damage to the machine. Ensure that the manual is readily available for the operator at all times. If you have any
questions about the operation of this machine, call your distributor or a Uni-Ram Service Engineer.
SETUP
DELIVERY INSPECTION
• Inspect the shipping carton for any sign of transport damage. Carefully remove the unit from the shipping carton
and check the unit for damage. Report any transport damage immediately to the carrier and your vendor. Initiate
a freight claim with the carrier. The manufacturer is not responsible for freight damage.
• Check for the parts listed below. If any are missing, contact your supplier.
LEVELING AND AIR SUPPPLY
• Level the machine using the adjustable legs.
• Attach an air plug (not supplied) to the Air Inlet.
The air supply pressure must be at least 85 PSI and the air must be free from contaminants such as water, dust,
rust, tar, grease etc.
To prevent damage to the Diaphragm Pump an internal Air Pressure Regulator has been installed to limit the air
pressure to precisely 85 PSI. Do not install a second air pressure regulator or use a pressure set below 85 PSI.
North America: Uni-ram Technical Service
1-800-417- 9133
Other Continents: Contact Your Supplier
Qty Included Parts Part Number
1MANUAL
1NOZZLE EXTENSION (INSTALLED IN AUTO WASH TANK) 780-3530
1 PUSH-ON NOZZLE EXTENSION, LARGER TIP, 3 HOLES 110-430PPS
1 PUSH-ON NOZZLE EXTENSION, SMALLER TIP 110-430
1 QUICK COUPLER (INSTALL ON RIGHT SIDE OF UNIT) 102-3990
1 HOOD DOOR SUPPORT 780-3723
1 TRIGGER CLAMP & PLUG KIT, SET OF 2 140-2340
2 AQUA-KLEEN PGC CLEANER 102-8200
1 AIR BLOW GUN (INSTALL ON RIGHT SIDE OF UNIT) 102-7010
1 COAG-KLEEN FLOCCULANT, 2KG 102-8300
SELECTION OF NOZZLE EXTENSION
780-3530 INSTALLED. HOLES PROVIDE SOLVENT TO CEAN DISPOSABLE CUP ADAPTOR.
CANNOT BE USED FOR CONVENTIONAL SYSTEMS.
110-430PPS HOLES PROVIDE SOLVENT TO CLEAN DISPOSABLE CUP ADAPTOR. MAY ALSO BE
USED FOR CONVENTIONAL SYSTEMS WITH LARGER OPENINGS IN NECK OF CUP.
110-430 FOR CONVENTIONAL SYSTEMS ONLY WITH SMALLER OPENINGS IN NECK OF CUP.

MANUAL - SPRAY GUN CLEANERS - UG7500W REVISED 2023-03
PAIL SETUP
Remove the door of the base cabinet.
WASH PAIL (LEFT):
• Make sure the Drain is closed (valve handle horizontal).
• Disconnect the Suction Pipe from the Drain Valve by pressing the grey button and then move the wash pail and
pipe outside the unit.
• Pour AquaKleen PGC into the wash pail. Add water as per the instructions on the container. Insert the suction
pipe and tube for the brush into the container and return the pail to the left side of unit. Re-connect the suction
pipe to the Drain Valve and open the Drain (valve handle vertical).
CLEAN PAIL (RIGHT):
• For Model UG7500W, remove the right pail (Clean Rinse) and fill with water. Insert the tube for the Manual
Wash Nozzle and Flow-through Brush into the pail. Insert the drain hose. Move the pail into the cabinet.
• For Model UG7500WT, there are 2 pails on the right. Remove them, fill the round pail with water and insert
the tube for the Manual Wash Nozzle and Flow-through Brush into the round pail. Insert the drain hose into the
rectanglar pail.
• For Model UG7500WF, the right-hand pail is used for manual cleaning and water treatment by flocculation.
Close the Drain of the flocculation tank (valve handle horizontal) and move the filter-pail assembly outside the
unit. Fill the pail to the bottom of the Filter Holder and add a full bottle of Aqua Kleen. Return the filter-pail
assembly to the unit. Leave the Drain closed.
WASH NOZZLES
A PPS-type nozzle is installed inside the tank for spray guns using a disposable cup system such as the PPS system.
See photo below. If you are using a non-disposable cup system, place one of the included push-on nozzle extensions
Installed
PPS-type
Nozzle
Extension
UG7500WT
UG7500W
UG7500WF

MANUAL - SPRAY GUN CLEANERS - UG7500W REVISED 2023-03
over the other nozzle (the opening in the neck of the cup will determine which extension should be used). This
arrangement will accomodate cleaning the spray gun while it is attached to the cup.
OPERATION
PREPARATION
For conventional cup systems (skip this step if you use a disposalble cup system):
• Disconnect the spray gun from the air hose. Pour paint from the cup (when present) into a 5 gallon pail
(not supplied).
• Rinse cup with water and pour into the same
5 gallon pail for later disposal or recycling.
PREPARE SPRAY GUNS FOR AUTO WASH
• Use the flow-through brush to clean the outside of the gun. Make sure the flow selector lever (blue han-
dle) is in the vertical position, then step on the right-hand foot pedal to start the flow of water.
• Connect the Gun to the Quick Coupler to send air into the air passage to keep water out and speed clean-
ing.

MANUAL - SPRAY GUN CLEANERS - UG7500W REVISED 2023-03
• Clean the paint channel using the Nozzle. Make sure the flow selector lever (blue handle) is in the hori-
zontal position. Then hold the gun up to the Nozzle so that the nozzle fits tightly into the opening of the
paint channel. Step on the right foot pedal to start the flow of water.
AUTO WASH SPRAY GUNS
• Disconnect the Gun from the Coupler.
• Loosen the air cap of the spray gun two full turns. Orient the ears in a horizontal position.
• Lock the trigger in the open position with the Trigger Clamp.
• To prevent liquid from entering the air passgae during automatic cleaning,
insert the white plastic Air Passage Plug into the Spray Gun's air inlet. If the
air inlet has a male threaded connector instead of a quick connect use the
knurled nut attached to the Trigger Clamp (included). Positive air pressure
is applied to the air passage during automatic cleaning.
• Place the gun with cup (if present) in the automatic cleaning tank. Close the lid and turn the “Auto Wash
Timer” knob clockwise to start cleaning. Cleaning times are shown on the Timer label. Turn the timer to 5
minutes. If you find that you do not require 5 minutes to clean your spray gun adjust the time accordingly.
• Step on the air rinse pedal for about 3-5 seconds to air-rinse the guns.
DRY WITH AIR
Re-connect the Gun to the Coupler and squeeze the trigger to send air through the paint channel to dry the paint
channel and to check that the gun is clean. Use the Air Blow Gun to dry the outside of the gun.
WATER TREATMENT BY FLOCCULATION (UG7500WF)
When the right pail is empty, the flocculation reservoir will be full of dirty water accumulated during manual
cleaning. This water needs to be treated by flocculation before re-using. IMPORTANT: At this time, the water in
the left pail (used for auto cleaning) should also be treated. If the water on the auto side is left untreated too long,
it will be too dirty for the flocculation process to work properly. The water in the left pail must be transferred into
the flocculation reservoir on the right for flocculation, as discussed below.
FLOCCULATION PROCEDURES (UG7500WF)
RIGHT SIDE (MANUAL CLEANING)
The dirty water from the right pail accumulates in the flocculation resrvoir during use. When the pail is empty
follow these steps to treat the water for re-use:
• Remove the Work Screen and the side rails. Sprinkle 2 full scoops* of the flocculant, COAG-KLEEN,
evenly over the dirty water. Close the lid and turn the Flocculation Timer fully. When the Timer is fin-
ished wait 2 minutes and turn the timer a second time to the one minute mark. Note: As the flocculation
proceeds, the water should become clear. The debris consisting of paint absorbed into the flocculant will
collect in the filters during the next step.
• Open the drain valve, located under the cleaning tank to drain and filter the dirty water.
• Clean the tank with the wash gun, wipe off the screen and rails and reinsert them.
• Close the drain valve and ensure that the Air Agitator in the bottom of the tank lies flat.
• Leave the two filters containing the debris in place until the next day to allow for them to dry throughly.
When the debris is dry, it should have an "oatmeal like" consistency. The debris can now be disposed of
according to local environmental regulations.
• If the filtered water is not clean, see the Troubleshooting section.
• The treated water can be reused until it becomes "silky" to the touch and then it should be disposed of
according to local environmental regulations. When adding fresh water, refill until the water reaches the
bottom of the filter holder.

MANUAL - SPRAY GUN CLEANERS - UG7500W REVISED 2023-03
• Reuse the filters and replace as required.
* Each scoop = 1 fl oz or 34g of flocculant; 2 kg = about 50-58 scoops.
LEFT SIDE (AUTO CLEANING)
The wash water in the left pail will gradually become too dirty to use or flocculate properly. It must be treated at the
same time as the water on the right side. Follow these steps:
• To transfer the dirty water to the flocculation reservoir on the right, turn the Transfer Lever (red handle on
right side of unit) to the ON position, wait about 2-21/2 minutes until the wash pail is empty. Turn the Lever
back to the OFF position.
• Follow the flocculation procedure in the previous section. The water drained into the right pail at this time
will be combined with the the water already in the pail and the total volume of water will be distributed
between the two pails through the "overflow" tube.
MAINTENANCE
SCREEN
Inspect the screen in the bottom of the auto cleaning tank and, if there is a build up of paint debris, clean the screen.

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MANUAL - SPRAY GUN CLEANERS - UG7500W REVISED 2023-03
TROUBLESHOOTING CHART
SYMPTOM REASON CORRECTIVE ACTION
CLEANER DOES NOT
FLOW AND PUMP
MAKES A PUMPING
NOISE
Drain valve closed Open drain valve (put in verticle position), if not
already open Check wash liquid level. Add liquid if
less than 1/2 full.
Liquid level too low Check wash liquid level. Add liquid if less than 1/2
full.
Paint debris in pump Follow Procedure 1, "Blocked Fluid Passage in Dia-
phragm Pump"
WASH LIQUID DOES
NOT FLOW AND PUMP
MAKES A HISSING
NOISE
Water in air line causes
pump to stall
Follow Procedure 2, "Blockage in Air Passage in
Diaphragm Pump"
WASH LIQUID DOES
NOT FLOW AND PUMP
DOES NOT MAKE A
NOISE
Pump leaks Replace pump
Blockage in air passage Follow Procedure 3, "Blocked Passage in Air Line".
PUMP DOES NOT STOP
UNLESS TIMER IS
TURNED BY HAND OR
AIR IS SHUT OFF
Defective Timer Follow Procedure 1, "Blocked Fluid Passage in Dia-
phragm Pump"
INSIDE WALL OF TANK
IS COATED WITH PAINT
EVEN THOUGH OPERA-
TOR MAINTAINS TANK
Cleaner lacks cleaning
strength
Replace liquid cleaner.
GUNS NOT CLEAN,
PUMP WORKING, LIQ-
UID FLOW NORMAL
Trigger not locked in open
position
Cleaner or rinse water is
dirty
Use Trigger Clip
Recyclle liquid or replace
FILTERED WATER IS
NOT CLEAN
(UG7500WF)
Not enough flocculant
Not enough agitation
Filter needs to be replaced
Do filtering procedure again. Add 1-2 extra spoonfuls
of flocculant.
Ensure that the Agitator is flat on the bottom of the
tank and the air pressure to the unit is at least 40 PSI.
Do filtering procedure again including adding floc-
culant.
Replace filter.
FILTERED WATER HAS A
"SILKY" FEEL
(UG7500WF)
Filtered water has been
used too often
Too much flocculant has
been added
Dispose of filtered water.
Reduce the amount of flocculant added next time.

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MANUAL - SPRAY GUN CLEANERS - UG7500W REVISED 2023-03
TROUBLESHOOTING PROCEDURES
PROCEDURE 1
Blocked Fluid Passage In Diaphagm Pump
If the pump sounds like it is working but liquid does not flow, clear the
fluid passage as follows:
• Remove suction tube from the pail and blow air at 85 PSI into the
INLET Liquid Hose (see diagram). Step on foot pedal to activate
pump. This procedure may have to be repeated several times. If
this procedure does not help, blow some water into the suction hose
using a spray gun, wait one minute and step on foot pedal to acti-
vate pump. This procedure may have to be repeated several times.
If this procedure does not work, the pump must be replaced.
If you need to replace the pump call your local dealer.
The warranty on the diaphragm pump is two years from date of purchase.
This procedure will also clear a blockage in the fluid line for the
brush. Follow the same procedure to clear a blockage in the auto-
matic nozzle except turn the timer instead of stepping on the foot
pedal.
PROCEDURE 2
Blocked Air Passage In Diaphragm Pump
If there is a steady hissing sound and the pump is not cycling, the spool
valve has stalled due to a blocked air passage. Follow the procedure
below to clear the blockage.
• Connect a blow gun to an 85 PSI source. Locate the blue hose that
extends from the air exhaust port of the diaphragm pump. Use a
blow gun to blow air into the open end of this hose. Turn timer.
If the procedure is successful, the pump will start working. The
procedure may have to be repeated several times. If this procedure
does not work, replace the pump.
• Cause: Contaminants in the air supply (water, oil, solid particles etc)
• Preventative Action: If necessary, install an Airline (Moisture) Filter.
PROCEDURE 3
Blocked Passage in Air Line
The components in the air line are the diaphragm pump, air valve, foot pedal, 3-way ball valve and regulator.
See the Flow Diagram and the section: Replacement Parts.
To troubleshoot a component:
1) Disconnect the air line to the component using the quick disconnect.
2) Step on foot pedal and check for presence of positive air pressure in the air line. If there is ample positive air
pressure, replace the component.
If air pressure is absent, there is a faulty component upstream. Reconnect the air line and check the operation of
the next component upstream by following steps 1 and 2 above.
INLET
INLET

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MANUAL - SPRAY GUN CLEANERS - UG7500W REVISED 2023-03
FLOW DIAGRAM - UG7500W
Use the diagram(s) to trace the flow of compressed air and liquid.

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MANUAL - SPRAY GUN CLEANERS - UG7500W REVISED 2023-03
115-200/K, Timer Kit
Auto Cleaning
Tank
144-390, Flow-Through
Brush (Not Shown)
Pedal/Valve
Assembly: 780-4300
Valve Only: 115-400BF
Flocculation Reservoir
(WF Model Only)
REPLACEMENT PARTS AND STRUCTURE
MODEL SHOWN IS A UG7500WF - SOME PARTS MAY NOT APPLY TO YOUR MODEL
Diaphragm Pump,
UDP4TA (Not Shown)
102-7010, Air Blow Gun
Manual Cleaning Nozzle
Air Coupler
Note: For additional replacement parts, see the list of included parts on page 3.
102-7020, Wash Gun with Splash
Guard (older models)
Filters
Primary, 400 Micron, 102-8125
Secondary, 25 Micron, 102-8126
Filter Holder, 102-8120
Manual Wash Pail,19L,
102-8111P
140-230,
Plug, tube and fittings

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MANUAL - SPRAY GUN CLEANERS - UG7500W REVISED 2023-03
UG7500W SERVICE PARTS

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MANUAL - SPRAY GUN CLEANERS - UG7500W REVISED 2023-03
UG7500W SERVICE PARTS
ITEM PartNo DESCRIPTION QTY
1 110-531L ADJUSTABLE FOOT 4
2 780-7510F FOOT PEDAL,WELDMENT 2
3 115-400 RINSE VALVE ASSY, 2-WAY 4
4 100-821F PUSH ROD, SS, LID SWITCH 1
5 113-800 LID SWITCH ASSY, FOR MODELS W/O VENT 1
6 140-731F PUSH BUTTOM, RINSE 2
7 KIT-PR AIR PRESSURE REGULATOR, SET TO 85 PSI 1
8 115-200K MECH. MANUAL TIMER KIT, 5 MINS. 1
9 UDP4-TA DUAL DIAPHRAGM PUMP, 4” 1
10 UDP2TAB 2”DIA-PUMP, TEFLON BALL 2
11 140-400F COMBINATION VALVE ASSY 1
12 100-835-6 GROUND WIRE ASSY, 18GA 1
13 100-8330 GROUND WIRE, GREEN, 14 AWG, 4 FT 3
14 103-8350 SUCTION TUBE WELDED WITH NUT 1
15 120-4210TDM SUCTION TUBE ASSY 1
16 104-4206 FILTER W/FITTING SUB-ASSY 1
17 URP100S RINSE PUMP,100CC 1
18 102-3950A AIR FLOW CONTROL ASSEMBLY,6MM TUBE 1
19 102-7010 AIR BLOW GUN ASSY 1
20 102-3561 AIR RESTRICTOR SUB-ASSY, 60PSI 1
21 QCF14H5PT Push-to-Connect 1/4” OD TUBE, 5 PORTS 1
22 780-3940 AIR FLOW CONTROL W/CHECK VALVE, SET TO 85 PSI 1
23 150-3780 LIQUID FLOW CONTROL ASSEMBLY, 6MM TUBE 2
24 140-480 DRAIN VALVE WITH FITTINGS AND HOSE 1
25 100-350N SPRAY JET ASSY. BRASS 8
26 100-370 SPRAY JET + EXTENSION 2
27 100-350L SPARY JET ASSY 4
28 110-356 GUN CLEANER NOZZLE,BRASS 1
29 780-3530 NOZZLE, 3M PPS ADAPTOR 1
30 100-332N FLAME RETARDING SCREEN 1
31 140-230 AIR PURGE KIT, SPRAY GUN 2
32 QCF1418L QUICK CONNECTOR 1/4”OD TUBE X 1/8” NPT 2
33 780-3340 FITTING SET UNDER THE WASH PAN 1
34 780-3440 FITTING SET ON WASH SINK SIDE WALL 1
35 780-8131 PE TUBE, 1/2” ID X 5/8” OD X 12” LG 1
36 36-023S VENT TUBE PLUG PLATE 1
37 102-3022F BRUSH HOLDER 2

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MANUAL - SPRAY GUN CLEANERS - UG7500W REVISED 2023-03
38 780-3370 LID HOLDER 1
39 780-3730 HOOD DOOR SUPPORT 1
40 102-3990 QUICK COUPLER, 1/4” BODY, WITH 6MM QC 1
41 102-3028 BRACKET GUN HOLDER, 1
42 103-3560 NOZZLE ASSEMBLY, WATER BORNE 1
43 780-3740 BACK SPLASH PLATE 1
44 36-034 GASKET 6” SQ, VENT HOLE PLUG 1
45 780-2730 FITTING SET FOR MANUAL BRUSH, UG7500 1
46 144-390S MANUAL BRUSH FOR SOLVENT 1
47 110-430 TAPER NOZZLE ADAPTER 1
48 110-430PPS NOZZLE ADAPTER FOR PPS 1
49 100-413F CUP HOLDER 2
50 140-2341 KIT-PLUG FOR GUN 2
51 110-430PPS2 UNIVERSAL NOZZLE ADAPTER 1
52 102-8200 AQUA-KLEEN PAINT GUN CLEANER, 946 ML 2
53 150-8115SKS SOLVENT WASH PAIL, HDPE, RECTANGULAR 1
54 150-8114RT PINSE PAIL, HDPE RECTANGULAR 1
UG7500W SERVICE PARTS
CONTINUED

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MANUAL - SPRAY GUN CLEANERS - UG7500W REVISED 2023-03

MANUAL - SPRAY GUN CLEANERS - UG7500W REVISED 2023-03
Full Product Warranty
These Uni-ram products have been engineered and manufactured to high performance standards. Each unit has
been subjected to detailed factory testing before shipment.
This product comes with a one-year full warranty from the date of purchase. Uni-ram Corporation reserves the
right to repair or replace the unit, free of charge, to the original purchaser if a part is found to be defective in
material or workmanship as determined by factory service personnel. The items listed below under "Conditions
of Warranty" as consumables are not covered.
Uni-ram reserves the right to direct the customer to ship the unit collect to the Uni-ram factory or to an approved
Service Center for repair using the Uni-ram Return Goods Procedure or to repair the unit on-site. To prevent
damage in transport, the purchaser must ship the unit in the original packaging or use alternate adequate packag-
ing. All units must be shipped clean and free of liquid.
Diaphragm Pump:
We are pleased to advise that the warranty on the diaphragm pump, the heart of the spray gun cleaner, comes
with a 2 year replacement warranty. If, in the unlikely event your diaphragm pump fails during the first two years
of service, call Uni-ram Service at 1-800-417-9133. We will send you a new pump free of charge and arrange for
the return of your original pump.
Conditions of Warranty:
As Uni-ram Corporation has no control over the working conditions or circumstances under which the purchaser
stores, handles or uses the product, Uni-ram makes no warranty or claim, either expressed or implied with respect
to this product's fitness for any purpose or the result to be obtained from its use. This condition applies to the sale
of all products and no representative or distributor of Uni-ram Corporation has the authority to waive or change
these conditions.
This warranty applies only to the original purchaser and does not apply if the unit has been misused, overloaded,
neglected, altered or used for any purpose other than those specified in the operating and installation instruc-
tions. Deterioration due to normal wear is not covered by this warranty. Damage due to accident, transportation,
fire, floods or acts of God is also not covered. Units whose serial numbers have been altered or removed are not
covered. The warranty is invalid if unauthorized chemicals as noted in the manual or liquids with acid content
are used in this unit. Unauthorized attempts at self-repair or alterations by the owner also invalidate this warranty.
Interior or exterior finishes are not covered by this warranty.
Consumable Items are not covered by this warranty (eg: gaskets, screens, bags, filters, nozzles and air jets).
This warranty replaces all other warranties expressed or implied by statute or otherwise.
To make a claim, call Uni-ram Service at 1-800-417-9133 and quote the serial number of the unit.