Viking Pump TSM710.1: HLE-ALE 4076/4176 - Manual (Page 7)

SECTION TSM 710.1 ISSUE C PAGE 7 OF 8
DANger !
before opening any viking pump liquid
chamber (pumping chamber, reservoir,
relief valve adjusting cap fitting, etc.)
be sure:
1. That any pressure in the chamber has
been completely vented through the
suction or discharge lines or other
appropriate openings or connections.
2. That the driving means (motor, turbine,
engine, etc.) has been “locked out” or
made non-operational so that it cannot
be started while work is being done on
pump.
3. That you know what liquid the pump
has been handling and the precautions
necessary to safely handle the liquid.
Obtain a material safety data sheet
(MSDS) for the liquid to be sure these
precautions are understood.
failure to follow above listed
precautionary measures may result in
serious injury or death.
PreSSure reLief vALve
iNSTruCTiONS
reLief vALve PreSSure ADJuSTMeNT:
If a new spring is installed or if the pressure setting of the
pressure relief valve is changed from what the factory has
set, the following instructions must be carefully followed.
1. Carefully remove the valve cap that covers the adjusting
screw. Note this cap will most likely contain liquid.
2. Loosen the locknut that keeps the adjusting screw from
turning while the pump is in operation.
3. Install a pressure gauge in the discharge line. This will
be required for the pressure adjustment operation.
4. Turn the adjusting screw in to increase the pressure and
out to decrease the pressure.
5. With the discharge line closed at a point beyond the
pressure gauge, the gauge will show the maximum
pressure that the valve will allow while the pump is in
operation
iMPOrTANT
When ordering parts for a pressure relief valve, always
give the model number and serial number of the pump as
it appears on the nameplate. Also specify the name of the
part(s) wanted. When ordering springs, be sure to give the
pressure settings desired.
1 2 3 5 6 4 7
9
8
A
1 2 3 4 5 7 8 6
9 10
A
vALve - LiST Of PArTS
1. Valve Cap 6. Valve Body
2. Adjusting Screw 7. Valve Spring
3. Lock Nut 8. Poppet
4. Bonnet 9. Cap Gasket
5. Spring Guide
vALve - LiST Of PArTS
1. Valve Cap 6. Valve Body
2. Adjusting Screw 7. Valve Spring
3. Lock Nut 8. Poppet
4. Spring Guide 9. Cap Gasket
5. Bonnet 10 Bonnet Gasket
figure 8
SiZe HLe
figure 9
SiZeS ATe & ALe