Hardi COMMANDER Plus Series

47HARDI
®
COMMANDER OPERATOR’S MANUAL
Cone check/replacement ECP operating unit
If it becomes difficult to build up sufficient pressure or if
pressure fluctuations occur, it may be necessary to
replace the cone and cylinder. A HARDI
®
kit is available
for this purpose. Ref. no. 741293.
1. Remove 4 x screws A and remove the housing.
2. Remove 4 x screws B.
3. Replace cylinder C and O-ring D.
4. Loosen the nut E, remove and replace
the cone F.
5. Reassemble in reverse order.
Cone check/replacement,
ECP distribution valve
Periodically check the distribution
valves for proper sealing. Do this by
running the sprayer with clean water
and open all distribution valves.
Cautiously remove the clip A and
pull out the hose B for the pressure
equalization device. When the
housing is drained, there should
be no liquid flow through the
pressure equalization device. If
there is any leakage, the valve
cone E must be changed.
Remove the clip C and lift the
motor housing off the valve
housing. Then unscrew the
screw D and replace the
valve cone E. Reassemble in
reverse order.
B
A
C
D
E
F
Pump valves and diaphragms replacement
(1302 pumps)
NOTE! It is recommended that if one or more
diaphragms and/or valves need replacing they all
should be replaced.
Diaphragm pump overhaul kit (valves, seals, dia-
phragms, etc.)
Pump model HARDI
®
part No.
1302 750175
Changing valves
1 Remove the valve covers (A). Before changing the
valves (B) note their orientation so they are re-
placed correctly. It is recommended to use new O-
rings (C) when changing or checking the valves.
Changing diaphragms
1 Remove the diaphragm covers (D).
2 Remove the diaphragm bolts (E).
3 The diaphragms (F) may now be changed.
4 If fluids have reached the crankcase, re-grease the
pump thoroughly. Also check the drain hole at the
bottom of the pump is not blocked.
5 Reassemble with torque settings shown below.
Torque Settings for 1302 pumps
Pump Valve Cover Diaphragm Diaphragm
Model Ft/lb(Nm) Bolt Ft/lb(Nm) Cover
1302 45 (60) 45 (60) 50 (70)
1 Ft/lb = 1.36 Nm
A
B
C
D
E
F
A = Valve Cover
B = Valves
C = O-rings
D = Diaphragm Cover
E = Diaphragm Bolt
F = Diaphragm
Maintenance
D
C
A
E
B