Crafco EZ 500 Series II, Manual

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EZ 500 Series II Melter Part Manual
Chapter 6 Maintenance Instructions
©2019 by Crafco, Inc. All Rights Reserved………………..…………………………………..….…Maintenance Instructions 6-8
6.18 Material Pump Replacement
Step Action
1 Close “TANK VALVE”.
2 Remove the front of the heat compartment.
WARNING
The material in the sealant tank is extremely hot. Bodily contact with hot sealant can
cause severe burns.
3 Remove the 6 bolts from both flanges of the double elbow and remove double elbow.
4 Remove the 8 bolts from the tank valve flange.
5 Remove the 4 bolts from the hydraulic motor and loosen setscrew in pump/motor
coupling. Remove motor from pump motor mount.
6 Remove the 4 bolts from the pump base and remove pump from heat compartment.
7 Remove the lower suction tee and the flanged nipple assembly from the material
pump. Make note of tee direction.
8 Install lower suction tee and flanged nipple assembly into new pump.
9 Install material pump in heat compartment. Flange gasket P/N 29060 will also need to
be installed at this time using (8) 3/8-16 x 1” bolts, (2) flat washers per bolt (1 on each
side of flange), lock washer, and hex nuts. Use (4) 1/2-13 x 1 3/4” bolts, flat washer,
lock washer, and hex nuts to attach pump to pump base. Leave all hardware loose
until everything is installed.
10 Install double elbow using new flange gaskets P/N29050, 3/8-16 x 1” bolts, (2) flat
washers per bolt (1 on each side of flange), lock washer, and hex nut. Leave all
hardware loose until everything is installed.
11 Install hydraulic motor on material pump using (4) 3/8-16 x 1 1/4” bolts and lock
washers. Tighten setscrew on pump/motor coupling.
12 Tighten all bolts and nuts.
13 Replace heat compartment using (12) 1/4-20 x 3/4” bolts, flat washers, and lock
washers.
Table 6-7 Material Pump Replacement