Viking-pump TSM630.1: H-LL Universal Seal User Manual download pdf (Page 12)

SECTION TSM 630.1 ISSUE F PAGE 12 OF 14

Mark valve and head before disassembly to insure proper

reassembly.

1. Remove valve cap.

2. Measure and record length of extension of adjusting

screw. Refer to “A” on Figure 11 and Figure 12.

3. Loosen locknut and back out adjusting screw until spring

pressure is released.

4. Remove bonnet, spring guide, spring and poppet from

valve body. Clean and inspect all parts for wear or

damage and replace if necessary.

Reverse procedures outlined under Disassembly. If valve

is removed for repairs be sure to replace in same position.

Relief valve adjusting screw cap must always point towards

suction side of pump. If pump rotation is reversed, remove

relief valve and turn end for end.

This section applies to 124E Series only.

INSTALLATION INSTRUCTIONS:

If a new spring is installed or if pressure setting of pressure

relief valve is to be changed from that which the factory has

set, the following instructions must be carefully followed.

1. Carefully remove valve cap which covers adjusting

screw.

Loosen locknut which locks adjusting screw so pressure

setting will not change during operation of pump.

2. Install a pressure gauge in discharge line for actual

adjusting operation.

3. Turn adjusting screw in to increase pressure and out to

decrease pressure.

4. With discharge line closed at point beyond pressure

gauge, gauge will show maximum pressure valve will

allow while pump is in operation.

In ordering parts for pressure relief valve, always give

model number and serial number of pump as it appears on

nameplate and name of part wanted. When ordering springs,

be sure to give pressure setting desired.

ASSEMBLY

PRESSURE ADJUSTMENT

HEAT CARTRIDGES

IMPORTANT

WARNING !

The pump needs to be properly grounded

before the heat cartridges are installed.

WARNING !

Setting the set point temperature higher

than necessary will not make the pump

heat any faster and will shorten the life of

the heat cartridges.

DANGER !

• Always disconnect, lockout, and tag

out supply circuits prior to installing.

• The installation must comply with

standard and local regulations.

• All wiring should be done by a licensed

electrician to meet local codes.

• Study this manual thoroughly before

installing and using the heat cartridges.

• Pay special attention to this section

and the parts marked “WARNING!” or

“DANGER”.

• Should questions or uncertainties

arise, please contact your authorized

Viking distributor.

Failure to follow these instructions may

cause an electrical shock and/or sparks,

which may result in serious injury or

death.

1. Spacers should be installed between the foot of the

pump and the base. This will create an air gap between

the pump and base to limit heat transfer to the base.

2. Coat the threads of the heat cartridge with an anti-seize

compound prior to installation. Install heat cartridges into

the tapped ports on the head and bracket in the locations

shown in the Figure XX below. Figure XX also shows the

minimum clearance around the pump needed to install

and remove the heat cartridges as well as the location

for the thermocouple. The number of heaters used and

the total wattage for each pump size is given in Table

XY below. 3/8” heat cartridges should be tightened to

10ft-lbs. ½” and ¾” heat cartridges should be tightened

to 20 ft-lbs.

3. Viking recommends installing a closed loop temperature

controller with a control algorithm that will minimize or

prevent overshooting the set point temperature. The set

point temperature needs to be slightly higher than the

melting point and significantly lower than the flash point

or boiling point of the liquid being pumped. Viking does

offer a controller for use with our heat cartridges. Ask

your local Viking distributor for details.

4. Properly insulate the pump to minimize heat loss. The

pump will not heat properly if it is not insulated.

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Viking-pump TSM630.1: H-LL Universal Seal User Manual Page 12

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