SeaLand Vacuum Pump Maintenance, A. Change Oil, B. Diaphragm Replacement, Pump Voltage, Procedure

Electrical Wiring

It is imperative that adequate wire size and proper over-current protection (fuse or circuit breaker) sizes are used. The following chart can be used as a guideline. Refer to chart on page 10 for solenoid/relay information.

PUMP VOLTAGE	PUMP MOTOR WIRE SIZE		BREAKER/FUSE SIZE
	1/2 HP	3/4 HP	1/2 HP	3/4 HP
12 VDC	6 to 8 ga.	3 to 4 ga.	50 amp	75 amp
24 VDC	8 to 10 ga.	6 to 8 ga.	25 amp	40 amp
32 VDC	10 to 12 ga.	8 to 10 ga.	20 amp	30 amp
115 VAC (1 phase)	12 to 14 ga.	10 to 12 ga.	10 amp	15 amp
230 VAC (1 phase)	14 to 16 ga.	12 to 14 ga.	5 amp	8 amp

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.

Maintenance Procedure	Procedure	Approximate Maintenance Level
Change Oil	A	See instructions
Inspect Diaphragm	B	Every two years
Inspect Rod Bushing	C	Every two years
Inspect Eccentric Pin	D	Every two years
Duckbill Valve Replacement	E	Every two years
Speed Reducer Replacement	F	If needed
Motor Replacement	G	If needed

A. CHANGE OIL

The gear reducer oil should be changed after first 50 hours, thereafter 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 item 9 on Pump Parts List)

B. DIAPHRAGM REPLACEMENT

Fig. 1

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 pre-

mature diaphragm failure. It is important to insure that properFig. 2 alignment is achieved between the eccentric pin and the dia-

phragm 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.

3