Bell & Gossett DN0130D Domestic Pump 250°F Condensate Units Series SA-PT - Manual (Page 4)

4
PUTTING THE UNIT INTO SERVICE
1. Assure that the unit is piped in accordance with instructions
on pages 2, 3 and 4.
2. Check floats and alternators for free operation.
3. Check power leads in accordance with wiring diagram
enclosed in control cabinet (when furnished).
4. Install drain plugs.
5. Fill receiver half full of water to prime pump(s) and prevent
possible damage to pump seals. Avoid freezing conditions
after unit receiver has been filled.
6. Check for proper rotation of all three phase motors. Rotation
must be clockwise looking down on the motor as indicated
by directional arrow on pump casting. If pump runs back-
wards, interchange two wires (3 phase only).
7. Throttle plug cock in discharge line until pressure at pump
(while pump is discharging) approaches pump rated pres-
sure. Tighten plug nut to secure adjustment.
8. Remove start-up label (below) from panel (if applicable) after
complying with instructions.
9. If possible, observe operation thru several cycles.
Three phase motors must use starters with properly sized over-
load relays. Overload relays furnished are designed for manual
reset.
A variety of electrical controls are available to meet system
specifications. Wiring diagrams are enclosed in electrical
panels when the panels are furnished as part of the unit.
Consult wiring diagrams for specific electrical control
information.
INSULATION
Series SA units frequently handle condensate at temperatures
up to 250°F (121°C). Insulating the receiver and return piping
will effectively conserve heat otherwise lost through radiation
and convection from the receiver shell and reduce ambient
temperatures.
WARNING: EXPLOSIBLE
Do not exceed 15 psi (1.0 Bar) rated pressure. Do not
restrict relief valve discharge. Open valves slowly. Failure to
follow these instructions could result in serious injury or
death.
WARNING: HIGH VOLTAGE
Disconnect and lock out power before connecting or
servicing unit. Failure to follow these instructions could
result in serious injury or death.
CAUTION: DO NOT RUN DRY.
SEAL DAMAGE MAY OCCUR.
Inspect pump seal regularly for leaks. Replace as required.
Failure to follow these instructions could result in injury or
property damage.
ELECTRICIAN / INSTALLER / OPERATOR
Remove and destroy this tag after –
1.Assuring that all pumps rotate clockwise per arrows cast
on volutes. (Jog pump momentarily to test – interchange
any two motor power wires to reverse 3Hp motors.)
2.Assuring that shipping locks have been removed from all
float switches.
CAUTION: DO NOT REVERSE
Reverse operation can cause extensive damage to
pumps. Jog the motor to test for direction of rotation. Failure
to follow these instructions could result in injury or property
damage.
OPERATION AND MAINTENANCE
Operators must be familiar with all sections of this manual to
understand the operation of the unit.
Hot water, steam and electricity can be hazardous.
Check motor nameplate for any lubrication requirements.
Pumps require no lubrication.
NOTICE / AUTO RESTART
Single phase motors will restart automatically after
thermal overload protector trips.
Overload thermal relays in starters must be reset manually.
A properly installed unit should function unattended for long
periods of time. Periodic checks to assure proper operations
are highly recommended. Refer to trouble shooting section
when necessary.
A variety of control options are available and are furnished in
accordance with user specifications. Refer to wiring diagrams
(when furnished) to determine control switch settings.
The inlet strainer (when furnished) is intended to protect the
pump and system. Periodic cleaning should be included in the
maintenance schedule. Check frequently in new systems.
WARNING: EXPLOSIBLE
Do not exceed 15 psi (1.0 Bar) rated pressure. Do not
restrict relief valve discharge. Open valves slowly. Failure to
follow these instructions could result in serious injury or
death.
WARNING: HIGH VOLTAGE
Disconnect and lock out power before connecting or
servicing unit. Failure to follow these instructions could
result in serious injury or death.
CAUTION: SUBSEQUENT DAMAGE
A unit showing symptoms of possible problems (over-
flow, noise, leaks, vibrations, continual operation, etc.) must
be corrected immediately. Failure to follow these instruc-
tions may result in full liability for subsequent injury or prop-
erty damage.
SAFETY INSTRUCTIONS
SEE COVER OF THIS MANUAL