Graco 309911C 用户手册

Part No. 206995 Throat Seal Liquid (TSL) carries isocy-
anate from the pump rod into the reservoir. After some 
time the TSL will thicken and darken, and must be 
replaced. Thick, dirty TSL will not pump through the 
lines and will harden in the pump wet-cup. 

How long TSL lasts depends on which chemicals are 
used, how much is used, what pressure, and condition 
of the pump seal and rod. Check the condition of the 
TSL every week, minimum, and change when needed.

To change TSL:

1.

Turn main power OFF 

. Disconnect power 

supply.

Part No. 246928 includes reservoir, tubing, and fittings 
necessary to modify the Reactor to use the wet-cup 
flush design. Order the pump separately, see below. 
Refer to displacement pump manual 309577 for further 
information.

2.

Relieve pressure, see Reactor operation manual.

3.

Remove reservoir cap. Empty reservoir (1). Clean 
any residue.

4.

Clean screen (V) of inlet check valve (1c). If check 
valves are not sealing and dirty TSL is getting into 
the wet-cup, replace the check valves (1b, 1c).

TI4170a

1b

1c

V

5.

Fill reservoir 3/4 full with TSL (6).

6.

Run pump. Each time pump A rod reaches bottom of 
stroke, check that some TSL is pumped from reser-
voir (1), through wet-cup (10), and back to reservoir.

E-20, E-XP1

246830

E-XP2

246831

E-30

246832

TI4173a

1

10