ZEP Pressure Washers, Руководство по обслуживанию

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1
Unloader Valve Breakdown
Unloader Valve
C07-03700X, C07-03800X, C07-05700X
Unloading Adjustment
1. Install an appropriate pressure gauge in
pump head outlet. The gauge should
have a range twice the operating
pressure.
2. Loosen nut (Item 23) and turn the
knob (Item 26) counter clockwise until
minimum spring tension.
3. Open the trigger gun, start the pump,
and observe pressure gauge reading.
Slowly tighten the knob.
4. Close and open the trigger gun to check
unloading pressure and bypass function
of the unloader valve. The unloading
pressure should not exceed operating
pressure more than 400 PSI.
5. Lock the setting by tightening the nut
(Item 23)
Note: Once the operating pressure is reached,
turning the knob clockwise will increase the
unloading pressure only.
Specifications
Maximum Flow 7.8 gal/m / 30 L/m
Max Unloading Press
C07-05700X 2900 psi / 200 bar
C07-03700X 3650 psi / 252 bar
C07-03800X 4350 psi / 300 bar
Maximum Temperature 190˚F / 88˚C
Weight 2.1 lbs / 0.91 kg
Bypass 1/4 FNPT
Inlet & Discharge 3/8 FNPT
Item Part Number Description Qty Kit
C07-03700X
C07-03800X
C07-05700X
1
C07-03700X-01 Piston 1 *
2 C07-03700-15 Pin, Roll 1 *
3 C07-03700-28 Ring, Anti-Extrusion 2 *
4 C07-03700-29 O-Ring – 3/32 x 7/16ID x 3043 1 *
5
C07-03700X-02 Housing, Unloader – 3/8” 1
6 C07-0370019B Gasket, Washer – 14 x 8.3 x 1.5 1
7 C07-0370019A Plug – 3/8” 1
8 C07-03700-6B Gasket, Washer – 11.4 x 6.5 x 1.5 1
9
C07-03700-6A Plug – 1/4” 1
10 C07-03700-2 O-Ring – 11/16ID 3 *
11 C07-02000-20 O-Ring 1 *
12 C07-03700-4 Orifice, Shutter 1 *
13
C07-03700-3 Spring, Compression 1 *
14 C07-03700X-03 Fitting, Outlet 1
15 N07-20028 O-Ring – 1/16CS x 7/16ID 1 *
16 C07-03700X-04 Guide, Piston – SS 1 *
17 C07-03700X-05 Ball, SS – 11/32 1
18 C07-03700-23 Spring, Compression 1
19
C07-03700X-06 Guide, Ball 1
20 C07-03700-12 Ring, Anti-Extrusion 2 *
21 8RS6-000SV01 O-Ring – 1/16CS x 1/2ID 1 *
22 C07-03700X-07 Guide, Piston 1
23
C07-03700-7 Nut, Lock – M8 2
24
C07-05700X-08 Spring – yellow 2900 psi 1
C07-03700X-08 Spring – grey 3650 psi 1
C07-03800X-08 Spring – black 4350 psi 1
25
C07-03700X-09 Follower, Spring 1
26 C07-03700X-10 Knob, Adjustment 1
27
C07-05700X-11 Cover, Knob – orange 2900 psi 1
C07-03700X-11 Cover, Knob – blue 3650 psi 1
C07-03800X-11 Cover, Knob – grey 4350 psi 1
C07-03700XK Kit, Repair - Parts Package
1/17/2008
Unloader Valve Breakdown