SeaLand M Series Vacuum Pump - Manual (Page 3)

3
Electrical Wiring
use adequate wire size and proper over-current protection (fuse or circuit breaker) sizes. use the following
chart as a guideline.
12 VDC
24 VDC
32 VDC
115 VAC (1 phase)
230 VAC (1 phase)
6 to 8 ga.
8 to 10 ga.
10 to 12 ga.
12 to 14 ga.
14 to 16 ga.
3 to 4 ga.
6 to 8 ga.
8 to 10 ga.
10 to 12 ga.
12 to 14 ga.
50 amp
25 amp
20 amp
10 amp
5 amp
75 amp
40 amp
30 amp
15 amp
8 amp
PUMP VOLTAGE PUMP MOTOR WIRE SIZE BREAKER/FUSE SIZE
1/2 HP 3/4 HP 1/2 HP 3/4 HP
Maintenance Procedure Procedure Approximate Maintenance Level
MAInTEnAnCE
ELECTRICAL CAUTION: DISCONNECT POWER SUPPLY TO PUMP BEFORE SERVICING UNIT.
FOLLOW PROPER LOCK-OUT/TAG-OUT PROCEDURES.
Maintenance intervals and normal parts replacement vary widely depending on numerous factors such as
frequency of system use and quality of flush water, etc. the chart below is intended strictly as a general
guideline. owner discretion and consideration of actual usage must be the first basis for determining proper
maintenance levels.
Change Oil
Inspect Diaphragm
Inspect Rod Bushing
Inspect Eccentric Pin
Duckbill Valve Replacement
Speed Reducer Replacement
Motor Replacement
A
B
C
D
E
F
G
See instructions
Every two years
Every two years
Every two years
Every two years
If needed
If needed
A. CHANGE OIL
the gear reducer oil should be changed after first 50 hours, there-
after every 200 hours. drain and fill with 90W oil or equivalent to
bottom of oil level inspection hole (opposite of output shaft). Grease
the rod bushing every 200 hours. (see M pump parts list.)
B. DIAPHRAGM REPLACEMENT
CAUTION: KEEP HANDS AND ALL OTHER EXTREMITIES AWAY FROM ROD AND DIAPHRAGM. FLUSH
THE PUMP WITH CLEAN WATER AND DISINFECTANT BEFORE SERVICING.
When replacing a diaphragm, be sure to follow maintenance instructions B-d.
IMPORTANT: Incorrect alignments and clearances may cause prema-
ture diaphragm failure. It is important to insure that proper alignment
is achieved between the eccentric pin and the diaphragm rod. Make
sure that clearances are correct between the diaphragm rod and the
eccentric (Fig. 6) and also between the eccentric and the gear reducer
hub (Fig. 7).
To Remove the Diaphragm:
1. remove pump cover (not used in saniservice applications).
2. Jog motor until rod is at bottom dead center position.
NOTE: See manual rotation method on page 4.
3. Close the maintenance valves (if installed) in the inlet and outlet
piping.
Fig. 2
Fig. 1