Murphy SM4VR, SM2VR, SM3, SM1 Detail C, Installing the Ckbo Check Valve, Resetting the Pointer

Detail E

Turn to Raise the Pointer

Turn to Lower the Pointer

Power

Cable

Tubing

Ferrule

Compression

Nut

Detail D

Pump Panel

Sensor Fitting

INSTALLATION Continued

Installing the CKBO Check Valve
The optional CKBO check valve is designed
to prevent product from backing up into the				Detail C
gage(s). We recommend installing the
CKBO valve at top of the tank plug as						Tubing
		1/4 NPTM
follows (refer to Detail C):
		straight
1. Determine a location for the valve.			fitting			Valve
		Check				Flat
Use of sealant on all fitting
					T
threads is strongly suggested.		Valve			A
					N
2. Attach CKBO to the tank plug	1/2 NPTM to				K
using wrench on valve flats.	1/4 NPTF					1/4 NPTM
		Reducer
See markings on the valve body			Ferrule			straight fitting
for positioning.						Ferrule nut
			Hole Plug
3. Attach tubing to CKBO as shown.						UTKN Tank Plug
Securely tighten all fittings.						or tank top
All connections must be air tight.

Installing the SMPA/SMPA230 Pump Assembly The pump assembly should be installed near the SM or SMVR panel. Connect the pump as follows (refer to Fig. 3 and 4 also see Detail D):

1. Before connecting the tubing from the SM or SMVR panel to the pump assembly, make sure the tubing reaches the pump assembly sensor fitting.

2. Connect the end of the tubing to the sen-

sor fitting as shown at right (Detail D). Tubing should be continuous length without splices.

3. The pump assembly includes a power cable, 16 AWG (1.5 mm2), 8 ft. (2.4 m) long. Connect the cable to 120 VAC or 230 VAC power source.

The pump assembly has a pressure SWICHGAGE®

with low and high pressure set points. When the gage pointer reaches the low pressure set point, the pump starts to built up purge pressure. When the pointer reaches the high set point, sufficient volume is reached stopping the pump. The set points are factory pre-set for your convenience.

Resetting the Pointer

CAUTION: SM and SMVR models are precalibrated in feet of static pressure above gage connection. Pointer MUST be reset to zero.

After the SM/SMVR complete system has been connected, reset the pointer for proper level indication, proceed as follows

(see Fig. 5 and Detail E):

1.Determine actual product level by any reliable means and record this value.

2. Very carefully remove the retaining ring

guarding against its spring-action, it can cause injuries. Remove the lens also.

3. Carefully hold the pointer, as shown at right, making sure not to bend it.

4. With a small screwdriver, turn the setting screw to corresponding stick reading value

recorded in step 1.

Clockwise to raise the pointer — counter clockwise to lower the pointer.

5. Replace the lens and snap ring.

Fig. 3 SM Panel Tubing Configuration

(SM2 Model shown)

FEET	FEET
MURPHY	MURPHY
LEVELGAGE	LEVELGAGE

To Pump

Assembly

	To Tank 2 Plug
To Tank 1 Plug	Sensor Fitting
Sensor Fitting
	To Tank 1 Plug	To Tank 2 Plug
	Vapor Recovery	Vapor Recovery
	Fitting	Fitting

Fig. 4	Pump Assembly
	Pressure SWICHGAGE®
			Y	S WICH	G
		H				A
	P
	R					G
	U		PSI			E
	M					®
	20		40	60		100
	0
			300
	0
				kPa
	Low trip point			High trip point
	adjustment			adjustment

120 VAC or 230 VAC

Tubing to SM Panel

Fig. 5

Snap Ring

Pointer FEET FEET

MURPHY	MURPHY
LEVELGAGE	LEVELGAGE

Read Button

UNLEADED UNLEADED

3