Checkpoint 1250E Series - Relief Valve; Motor Electrical Connection; Connecting the Chemical Supply

1250E & 1500E Electric Pump
Operating Manual
CP/MAN-PRD-1215E REV. 02 EFF. DATE: 12/15/12 Page 6 of 13
5.6. Capacity of unit is 0.65 liters.
CAUTION: DANGER OF BURNS WHEN DRAINING HOT LUBRICANT!
CAUTION: ASSURE ENVIRONMENTALLY SAFE DRAINING AND DISPOSAL OF SPENT
LUBRICANTS.
6. RELIEF VALVE
CAUTION: NEVER OPERATE PUMP WITHOUT A PRESSURE RELIEF VALVE ON THE
DISCHARGE SIDE OF THE PUMP THAT HAS BEEN SET TO THE APPROPRIATE
OVERLOAD PRESSURE! DOING SO MAY CAUSE DAMAGE TO THE GEARBOX
AND/OR CAUSE A LEAK HAZARD!
CAUTION: WHEN USING A PRESSURE RELIEF VALVE, CHEMICAL TANK OR VESSEL MUST
BE PROPERLY VENTED TO ATMOSPHERE TO AVOID THE POSSIBILITY OF
OVER-PRESSURIZING THE TANK IF THE PRESSURE RELIEF VALVE OPENS!
6.1. A discharge pressure relief valve has been supplied with the pump when shipped from
CheckPoint. It has been set to the appropriate discharge overload pressure at the factory.
6.2. Overload pressures are as given in Figure 3 according to plunger diameter:
FIGURE 3
Plunger Diameter (IN)
Set Pressure (PSIG)
0.125
12,000
0.250
9,000
0.375
4,000
0.500
2,200
0.750
1,000
1.000
570
7. MOTOR ELECTRICAL CONNECTION
7.1. The electric motor must be connected so that its direction of rotation is the same as the arrow on
the gearbox.
7.2. The electric motor must be connected in accordance with all local regulations, including especially
overload protection.
7.3. The complete installation must be equipped with an “emergency off” switch that is easily and
quickly accessible by the user.
8. CONNECTING THE CHEMICAL SUPPLY
8.1. Clean suction lines and check chemical containers to ensure that they are free of all foreign
matter, sand, sludge, or chemical buildup.