Safety Devices - Pacific Hoists PEH050NH Operation Manual

2.3 Safety Devices

(1) Motor brake
The "Electro-Magnetic Brake" unique design, it features simultaneous motor braking upon
switching off power even under full load condition, quick action and high frequency use.
(2) Mechanical Brake w/Clutch & Overload protection device
The unique design includes mechanical brake & overload dual protection. Mechanical clutch
operates with motor brake, which can offer exactly, very limited slipping & quick braking. OL
device prevents over loading to damage goods, and ensure secure operation and product's
life-span.
(3) Hook and hook latch
The hook is drop-forged from high tensile steel and heat treated for strength and toughness.
The bottom hook is capable of 360∘rotatable and fitted with a safety latch for added
security.
(4) Phase Error Relay
To test 3 phases if any wrong phases connection. It can stop power once any abnormal
situation to protect the hoist.
(5) Limit Switch
Upper and lower limit switches are fitted for switching off power automatically in case of
over lifting or over lowering.
(6) Emergency Stop Device
This button is used to quick stop the hoist in an emergency situation. It is a red, mushroom
shaped swivel button, located at the uppermost position of the pendant. When pressed,
power to the equipment is switched off and the button locked automatically. Turn it
clockwise can release the lock and enable re-start. (Illust.1)
4-way + E.S.(EMERGENCY STOP)
(Illust.1)
6
2-way + E.S.(EMERGENCY STOP)