Pressure Pump System; Vacuum System - Sandia 80-5000 Operation And Maintenance Manual

4.0 Prepare Unit for Use Continued
4.2

Pressure Pump System

The Hard Surface Extractor utilizes a twin piston pump which is adjustable from 100-
1200 PSI. Never operate the pump at a pressure setting over 1200 PSI or without water
in the solution tank. Doing so will damage the pump and will void the warranty. Anytime
the Hard Surface Extractor has been stored for a period of time or has had the pump run
"dry," the solution pump will have to be primed to remove air which might be trapped in
the pumping system (see "Priming the Solution Pump" section).
When high pressure drop is engaged, a pressure drop of approximately 100 PSI is
considered normal. However, if pressure drops greatly exceeding 100 PSI or if there is
strong pulsation in the solution hose, prime the pump.
Pressure Regulator (Unloader Valve): pressure is easily adjusted by a pressure
regulator located on the rear of the machine next to the pressure gauge, only when the
valve to a wand or high pressure valve is engaged. To increase the solution pressure, twist
the regulator handle clockwise. DO NOT operate the pump above 1200 PSI.
Priming the Solution Pump: connect the pressure hose to the female quick
disconnect (QD) on the front of the machine. Insert an open-ended male QD into the
female QD on the end of the pressure hose.
Turn on the pressure pump switch and the vacuum switches (both vacuum I and II
switches). Direct the solution back into the recovery tank through the vacuum inlet. Cup
your hand around the vacuum inlet allowing the vacuum from the Hard Surface Extractor
to pull the solution through the solution hose. Allow solution to run for 10 seconds. This
allows the solution to push out any air in the pumping system. Repeat this procedure if
necessary. When the pressure hose is connected to the wand, the pressure drop should
only be approximately 100 PSI.
4.3

Vacuum System

Vacuum Motors: the Hard Surface Extractor utilizes a unique two (2) vacuum system,
using one (1) 3-stage and one (1) 2-stage motor, which produces both outstanding
vacuum lift and airflow for superior extraction and drying times. The vacuum system can
be used with one vacuum motor for cleaning delicate fabrics or both vacuum motors for
carpet cleaning, water extraction and hard surface cleaning.
Automatic Vacuum Shut-Off: The float assembly shut-off, located in the recovery
tank on the vacuum stand pipe, prevents the waste tank from overflowing into the stand
pipe and damaging the vacuum motors. The float assembly will cut-off vacuum to the
waste tank. When this happens, immediately turn off the vacuum motors and empty the
waste tank. If the operator continues to use machine after the tank is full, it will void the
Warranty. The float assembly has a filter to prevent lint and debris from entering the stand
pipe. Refer to the "Maintenance" section for removal and proper cleaning.
Recovery Tank: the vacuum system requires the use of an external filter. The clear
view in-line filter is included with the machine and must be used on every job.
It is also necessary to use a defoamer to eliminate foam build-up in the recovery
tank which could lead to foam/moisture entering the vacuums and contributing to
early failure of the vacuum motors.If moisture does enter the vacuum motors, contact
an authorized service center. To prevent moisture from damaging the vacuum motors
during storage, empty the recovery tank and store with the lid open.
(10) 1200 PSI Hard Surface Extractor
10.0 Recovery Tank Parts List
Drawing No. Item No.
12 10-0419-A
13 10-0804
14 10-0804-A
15 80-0101
16 80-0100
17 80-0100
18 10-0820
19 10-0821
20 10-0830
21 10-0805
22 80-0011-2
23 80-0004
24 80-0032
25 80-0115-B
26 10-0849
27 80-0008
28 10-0416-A
29 80-0012
30 80-0105
31 80-0103
32 80-0108
33 80-0113
34 80-0106
35 80-0102
36 10-0806
37 80-0101
38 80-0104
Description
Screw for Extractor Hatch
Hatch Cover
Hatch Cover Gasket
3/4" Check Valve
3/4" Hose x 3/4" MNPT
3/4" GHT Cap
End Cap for Hinge
Extractor Hinge
Hinge Keeper
Dump Valve
90 Degree Street Elbow
1/4" x 4" Brass Nipple
3/8" Bulk Head Fitting
3/8" MPT x 1/2" Brass Barb
1-1/2" ABS Fitting
1.5 PVC Femal Adapter
1-1/2" Black ABS Stand Pipe
Shut-Off Assembly for Extractor
Float Switch for Sump Pump
Sump Pump
3/4" Bard x 3/4" SFGHT
1" Hose Clamp
3/4" Hose for Auto-Dump
3/4" MNPT x 3/4" Barb
1-1/2" Grey Hose Bard Fitting
3/4" Check Valve
Strain Relief for Sump Pump
1200 PSI Hard Surface Extractor (31)
Quantity
6
1
1
1
1
1
2
2
2
1
2
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
2