Maintenance
3A5379B
17
Platen Maintenance
See F
IG
. 14. If the platen does not come out of the pail
easily when the pump is being raised, the air assist tube
(AT), or check valve may be plugged. A plugged valve
prevents air from reaching the underside of the plate to
assist in raising it from the pail.
1. Perform the
Pressure Relief Procedure
on page
14.
2. Refer to the parts illustration on page 43 and disas
-
semble the air assist valve as shown.
3. Clear the air assist tube (AT) in the platen. Clean all
parts of the valve and reassemble.
4. Remove the bleed stick (BS) from the platen. Push
the bleed stick through the bleed relieve ports to
remove material residue.
Adjust Spacers
Use Platen with Tapered and Straight Sided Pails
The platen is supplied for use with 20 liter (5 gallon), 30
liter (8 gallon), and 60 liter (16 gallon) straight sided
pails, but only single wiper platens can be easily modi
-
fied for use with tapered pails.
Use platen with tapered pails
1.
Working from the bottom
, use a screwdriver to pry
the spacer (EG) loose. Work the spacer upward
completely above the flange of the platen. See F
IG
.
15.
2. By hand, angle the spacer (EG) and work it off the
plate, pulling it down over the flange and bottom
wipers (EB). See F
IG
. 16.
3. Save the spacer (EG), as it is required for other
applications.
F
IG
. 14
To use Model 255655 platens
with tapered pails, the spacer
(EG) must be removed.
1
EG
AT
r_255468_313527_33a
BS
F
IG
. 15
EG
EB
r_255468_313527_30a
BS
